package com.flong.codegenerator;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.commons.lang3.StringUtils;
/***
*@Author:liangjilong
*@Date:2015年12月5日下午12:25:12
*@Email:jilongliang@sina.com
*@Version:1.0
*@CopyRight(c)Flong Intergrity Ltd.
*@Desction:★★★★★★★★★★★★★★★代码生成器实现思路★★★★★★★★★★★★★★★★★★★★★★★★★★★★★
*
* ★★在快速开发的过程中，为了节省时间和成本很多人都会开发自己的代码生成器，而且成为程序员开发过程中必不可少的神器.
* ★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★
* 第一种：先有数据库表，然后通过jdbc链接数据库再读取表的字段等属性出来生成Entity,Dao,Service,Controller，JSP等代码
* 这种必须是有数据库和表的思想,通过程序去读取数据库表的属性等信息,然后组织代码通过文件流生成文件.
*
* ★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★
* 第二种：已经设计好数据库表文档，把所有表的字段属性配置到EXCEL或者CSV格式的文件通过JXL/POI技术去读取文件的字段实现
* Entity,Dao,Service,Controller，JSP,在过程中会借助Freemaker,Velocity去实现.三层和jsp，然后通过一下ORM(hibernate,
* ibatis,myibatis等)技术逆向生成数据库表.这种是无数据库表的思想. 在生成java的代码一般不建议建ORM映射主从表关系,通过
* SQL去建立关系,为啥？因为在一些大型的公司如：银行，阿里巴巴，电信等公司，很多项目开发过程中在数据库表很少建立表关系的
* 因为在些业务复杂的情况下通过SQL和程序控制的解决方案比ORM映射关系方案占优势.比如优化性能/维护/灵活性更加好等.
* ★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★
*
* 此程序以MySQL为主，未实现其他数据库.此程序可以再优化的，为了有些初学者,就不作太多的处理和优化.一些高手会编程更好的生
* 成器，此程序只提供参考和学习,如有什么问题，可以多指出.共同学习和进步.谢谢！~
* ★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★
*/
@SuppressWarnings("all")
public class CodeGenerator {
/*************************变量****Begin************************************/
private static final String myEmail="jilongliang@sina.com";//Email
private static final String Version="1.0";//版本
private static final String Description=" ";//描述
public static final String ENTER = "\n";//换行
public static final String TAB = " ";//tab空格.
public static final String NAME = "NAME";
public static final String TABLE_CAT = "TABLE_CAT";//表 catalog
public static final String TABLE_SCHEM = "TABLE_SCHEM";//表 schema
public static final String TABLE_NAME = "TABLE_NAME";//表名
public static final String TABLE_TYPE = "TABLE_TYPE";//表类型
public static final String REMARKS = "REMARKS";//表注释
public static final String TYPE = "TYPE";//表的类型
public static final String SIZE = "SIZE";//大小
public static final String CLASS = "CLASS";//类别
/*************************变量****End************************************/
public static final String NOW_DATE = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
/***************获取数据库的配置连接************/
public static final String DB_NAME = PropertiesHelper.getValueByKey("jdbc.url").substring(
PropertiesHelper.getValueByKey("jdbc.url").lastIndexOf("/")+1,
PropertiesHelper.getValueByKey("jdbc.url").indexOf("?") == -1?
PropertiesHelper.getValueByKey("jdbc.url").length():
PropertiesHelper.getValueByKey("jdbc.url").indexOf("?"));
//从配置获取工程的报名路径
public static final String ROOT_PACKAGE = PropertiesHelper.getValueByKey("rootPackage");
//获取作者.
public static final String AUTHOR = PropertiesHelper.getValueByKey("author");
//忽略表的后缀.
public static final List<String> IGNORE_TABLE_PREFIX = new ArrayList<String>();
/*******定义代码块*******/
static {
String ignoreTablePrefix = PropertiesHelper.getValueByKey("ignoreTablePrefix");
if(ignoreTablePrefix.length() > 0) {
String[] ignoreTablePrefixs = ignoreTablePrefix.split("\\s*\\,\\s*");
for (String elem : ignoreTablePrefixs) {
IGNORE_TABLE_PREFIX.add(elem);
}
}
}
/***
* 生成实体类的代码
* @param table
* @throws Exception
*/
public void createEntityClass(String table) throws Exception {
String tableConstantName = getTableConstantName(table);
String className = getClassName(tableConstantName);
StringBuilder buffer = new StringBuilder();
buffer.append("package " + ROOT_PACKAGE + ".entity;").append(ENTER);
buffer.append("import java.util.Date;").append(ENTER);
buffer.append("import com.flong.commons.persistence.Entity;").append(ENTER);
buffer.append("import com.flong.commons.persistence.annotation.Column;").append(ENTER);
buffer.append("import com.flong.commons.persistence.annotation.Id;").append(ENTER);
buffer.append("import com.flong.commons.persistence.annotation.Relation;").append(ENTER);
buffer.append("import com.flong.commons.persistence.annotation.Table;").append(ENTER);
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("/**\n * @Created：" + NOW_DATE + "\n * @Author " + AUTHOR + "\n");
buffer.append(" * @Version:").append(Version).append(ENTER);
buffer.append(" * @Description:").append(className).append(ENTER);
buffer.append(" * @Email:").append(myEmail).append("\n*/");
buffer.append(ENTER);
buffer.append("@Relation(" + className + ".TABLE)");
buffer.append(ENTER);
buffer.append("public class " + className + " extends Entity {");
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append(TAB);
buffer.append("/** 表名常量 */");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append("public static final String TABLE = Table." + tableConstantName + ";");
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append(TAB);
buffer.append("/**");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append(" * 列名常量");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append(" */");
buffer.append(ENTER);
for (Map<String, Object> col : getCols(table)) {
String colName = col.get(NAME).toString().toUpperCase();
buffer.append(TAB);//生成字段变量
buffer.append("public static final String COL_" + colName + " = \"" + colName + "\";//"+col.get(REMARKS));
buffer.append(ENTER);
}
buffer.append(ENTER);
buffer.append(TAB);
buffer.append("/**");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append(" * 列属性");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append(" */");
String tablePrimaryKeys = getTablePrimaryKeys(table);//如果是主键
//if(col.get(NAME).toString().equalsIgnoreCase("ID")) {
if(tablePrimaryKeys!=null){
buffer.append(ENTER+TAB);
//如果主键不为空的时候就给一个@Id注解.
//如果是hibernate的可以给其他的注解，如@GeneratedValue(strategy = GenerationType.IDENTITY) @SequenceGenerator等
//并要在包的下面头部导入
//import javax.persistence.Column;
//import javax.persistence.Entity;
//import javax.persistence.GeneratedValue;
//import javax.persistence.GenerationType;
//import javax.persistence.Id;
//import javax.persistence.Table;
buffer.append("@Id");
//这里不赋值给,因为下面这个for循环有一个.
//sb.append("@Column(COL_" + tablePrimaryKeys + ")");
}
for (Map<String, Object> col : getCols(table)) {
buffer.append(TAB);
buffer.append(ENTER);
buffer.append(TAB);
buffer.append("@Column(COL_" + col.get(NAME).toString().toUpperCase() + ")");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append("private ");
//这行代码的意思就是说，如果找到数据库表的字段是为ID的时候，或后缀有_ID的就认为是主键,并且忽略大小写就给一个Long
//在实际过程中应该判断是它的字段是不是为了PrimaryKey才设为Long才适合.
//if(col.get(NAME).toString().equalsIgnoreCase("ID") || col.get(NAME).toString().toUpperCase().endsWith("_ID")) {
if(Class.forName(col.get(CLASS).toString()).isAssignableFrom(Date.class) || Class.forName(col.get(CLASS).toString()) == Timestamp.class) {
buffer.append("Date");
} else if(getClassName(col.get(NAME).toString()).equals(Class.forName(col.get(CLASS).toString()).getSimpleName())) {
buffer.append(col.get(CLASS));
} else {
buffer.append(Class.forName(col.get(CLASS).toString()).getSimpleName());
}
//sb.append(" " + getFieldName(col.get(NAME).toString()) + ";");
buffer.append(" " + col.get(NAME).toString() + ";");
buffer.append(ENTER);
}
buffer.append(ENTER);
for (Map<String, Object> col : getCols(table)){
buffer.append(TAB);
buffer.append("public ");
if(Class.forName(col.get(CLASS).toString()).isAssignableFrom(Date.class) || Class.forName(col.get(CLASS).toString()) == Timestamp.class) {
buffer.append("Date");
} else if(getClassName(col.get(NAME).toString()).equals(Class.forName(col.get(CLASS).toString()).getSimpleName())) {
buffer.append(col.get(CLASS));
} else {
buffer.append(Class.forName(col.get(CLASS).toString()).getSimpleName());
}
buffer.append(" ").append("get").append(col.get(NAME).toString().replaceFirst("\\b(\\w)|\\s(\\w)", col.get(NAME).toString().substring(0,1).toUpperCase()));
buffer.append("() {");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append(TAB);
buffer.append("return ").append(col.get(NAME).toString()).append(";");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append("}");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append("public void ").append("set").append(col.get(NAME).toString().replaceFirst("\\b(\\w)|\\s(\\w)", col.get(NAME).toString().substring(0,1).toUpperCase()));
buffer.append("(");
if(Class.forName(col.get(CLASS).toString()).isAssignableFrom(Date.class) || Class.forName(col.get(CLASS).toString()) == Timestamp.class) {
buffer.append("Date");
} else if(getClassName(col.get(NAME).toString()).equals(Class.forName(col.get(CLASS).toString()).getSimpleName())) {
buffer.append(col.get(CLASS));
} else {
buffer.append(Class.forName(col.get(CLASS).toString()).getSimpleName());
}
buffer.append(" ").append(col.get(NAME).toString());
buffer.append(") {");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append(TAB);
buffer.append("this.").append(col.get(NAME).toString()).append(" = ").append(col.get(NAME).toString()).append(";");
buffer.append(ENTER);
buffer.append(TAB);
buffer.append("}");
buffer.append(ENTER);
}
buffer.append("}");
buffer.append(ENTER);
FileUtils.save("output-code/" + ROOT_PACKAGE.replaceAll("\\.", "/") + "/entity/" + className + ".java", buffer.toString());
}
/***
* 生成dao接口interface类的代码
* @param table
* @throws Exception
*/
public void createDaoClass(String table) throws Exception {
String className = getClassName(getTableConstantName(table));
String objectName = StringUtils.uncapitalize(className);
StringBuilder buffer = new StringBuilder();
buffer.append("package " + ROOT_PACKAGE + ".dao;").append(ENTER);
buffer.append("import java.io.Serializable;").append(ENTER);
buffer.append("import java.util.List;").append(ENTER);
buffer.append("import com.flong.commons.persistence.bean.SimplePage;").append(ENTER);
buffer.append("import com.flong.commons.persistence.dao.EntityDao;").append(ENTER);
buffer.append("import com.flong.modules.pojo."+className+";").append(ENTER);
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("/**\n * @Created：" + NOW_DATE + "\n * @Author " + AUTHOR + "\n");
buffer.append(" * @Version:").append(Version).append(ENTER);
buffer.append(" * @Description:").append(className).append(ENTER);
buffer.append(" * @Email:").append(myEmail).append("\n*/");
buffer.append(ENTER);
buffer.append("public interface " + className + "Dao extends EntityDao<" + className + "> {").append(ENTER);
buffer.append("/**查询*/").append(ENTER);
buffer.append(" public List<"+className+"> list(SimplePage simplePage,"+className+" "+objectName+");").append(ENTER);
buffer.append("/**保存数据*/").append(ENTER);
buffer.append(" public void saveData("+className+" "+objectName+");").append(ENTER);
buffer.append("/**更新数据*/").append(ENTER);
buffer.append(" public void updateData("+className+" "+objectName+");").append(ENTER);
buffer.append("/**删除数据*/").append(ENTER);
buffer.append(" public void deleteData(Long pk);").append(ENTER);
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("}");
buffer.append(ENTER);
FileUtils.save("output-code/" + ROOT_PACKAGE.replaceAll("\\.", "/") + "/dao/" + className + "Dao.java", buffer.toString());
}
/***
* 生成dao的实现类的代码
* @param table
* @throws Exception
*/
public void createDaoImplClass(String table) throws Exception {
String className = getClassName(getTableConstantName(table));
String objectName = StringUtils.uncapitalize(className);
String tableName = StringUtils.lowerCase(getTableConstantName(table));//获取表名
StringBuilder buffer = new StringBuilder();
buffer.append("package " + ROOT_PACKAGE + ".dao.impl;").append(ENTER);
buffer.append("import java.io.Serializable;").append(ENTER);
buffer.append("import org.apache.commons.lang3.StringUtils;").append(ENTER);
buffer.append("import org.springframework.stereotype.Repository;").append(ENTER);
buffer.append("import com.flong.commons.persistence.bean.SimplePage;").append(ENTER);
buffer.append("import com.flong.commons.persistence.dao.impl.EntityDaoSupport;").append(ENTER);
buffer.append("import com.flong.modules.dao."+className+"Dao;").append(ENTER);
buffer.append("import com.flong.modules.pojo."+className+";").append(ENTER);
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("/**\n * @Created：" + NOW_DATE + "\n * @Author " + AUTHOR + "\n");
buffer.append(" * @Version:").append(Version).append(ENTER);
buffer.append(" * @Description:").append(className).append(ENTER);
buffer.append(" * @Email:").append(myEmail).append("\n*/");
buffer.append(ENTER);
buffer.append("@Repository");//这个是spring的注解
buffer.append(ENTER);
buffer.append("public class " + className + "DaoImpl extends EntityDaoSupport<" + className + "> implements " + className + "Dao {");
buffer.append("/**查询*/").append(ENTER);
buffer.append(" public List<"+className+"> list(SimplePage simplePage,"+className+" "+objectName+"){").append(ENTER);
buffer.append(ENTER);
String mergeField= "";//合并字段.
//--遍历获取列,并拼接字符串,SQL的查询列,查询不建议用*去查询表的所有列.
for (Map<String, Object> col : getCols(table)){
//
if(col.get(NAME).toString()!=null){
mergeField +=col.get(NAME).toString()+",";//合并字段并用,隔开字段名
}
}
//去掉最后一个,号然后拼接成一个完成的select查询字段
if(mergeField!=null){
mergeField = mergeField.substring(0, mergeField.length()-1);
}
buffer.append(" String sql = ").append("\" select "+mergeField+" from ").append(tableName).append(" where 1=1 \" ").append(ENTER);//这个TABLE是实体类的变量
//daoQuery这个是底层封装的一个接口,自个可以更加自己需求封装.
buffer.append(" List<"+className+"> list= daoQuery.query(sql,"+className+".class,simplePage);").append(ENTER);
buffer.append(" return list;").append(ENTER);
buffer.append("}").append(ENTER);//查询的结束{
buffer.append("/**保存数据*/").append(ENTER);
buffer.append(" public void saveData("+className+" "+objectName+"){").append(ENTER);
buffer.append(" try {").append(ENTER);
buffer.append(" saveOrUpdate("+className+");").append(ENTER);
buffer.append(" } catch (DaoAccessException e) {").append(ENTER);
buffer.append(" e.printStackTrace();").append(ENTER);
buffer.append(" }").append(ENTER);
buffer.append("}");
buffer.append("/**更新数据*/").append(ENTER);
buffer.append(" public void updateData("+className+" "+objectName+"){").append(ENTER);
buffer.append(" try {").append(ENTER);
buffer.append(" saveOrUpdate("+className+");").append(ENTER);
buffer.append(" } catch (DaoAccessException e) {").append(ENTER);
buffer.append(" e.printStackTrace();").append(ENTER);
buffer.append(" }").append(ENTER);
buffer.append("}");
buffer.append("/**删除数据*/").append(ENTER);
buffer.append(" public void deleteData(Long pk){").append(ENTER);
buffer.append(" try {").append(ENTER);
buffer.append(" delete(pk);").append(ENTER);
buffer.append(" } catch (DaoAccessException e) {").append(ENTER);
buffer.append(" e.printStackTrace();").append(ENTER);
buffer.append(" }").append(ENTER);
buffer.append("}");
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("}");
buffer.append(ENTER);
FileUtils.save("output-code/" + ROOT_PACKAGE.replaceAll("\\.", "/") + "/dao/impl/" + className + "DaoImpl.java", buffer.toString());
}
/***
* 创建Service的接口
* createServiceClass
* @param table
*/
public void createServiceClass(String table) {
String className = getClassName(getTableConstantName(table));
String objectName = StringUtils.uncapitalize(className);
StringBuilder buffer = new StringBuilder();
buffer.append("package " + ROOT_PACKAGE + ".service;");
buffer.append("import java.io.Serializable;").append(ENTER);
buffer.append("import java.util.List;").append(ENTER);
buffer.append("import com.flong.commons.persistence.bean.SimplePage;").append(ENTER);
buffer.append("import com.flong.commons.persistence.dao.EntityDao;").append(ENTER);
buffer.append("import com.flong.modules.pojo."+className+";").append(ENTER);
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("/**\n * @Created：" + NOW_DATE + "\n * @Author " + AUTHOR + "\n");
buffer.append(" * @Version:").append(Version).append(ENTER);
buffer.append(" * @Description:").append(className).append(ENTER);
buffer.append(" * @Email:").append(myEmail).append("\n*/");
buffer.append(ENTER);
buffer.append("public interface " + className + "Service {");
buffer.append("/**查询*/").append(ENTER);
buffer.append(" public List<"+className+"> list(SimplePage simplePage,"+className+" "+objectName+");").append(ENTER);
buffer.append("/**保存数据*/").append(ENTER);
buffer.append(" public void saveData("+className+" "+objectName+");").append(ENTER);
buffer.append("/**更新数据*/").append(ENTER);
buffer.append(" public void updateData("+className+" "+objectName+");").append(ENTER);
buffer.append("/**删除数据*/").append(ENTER);
buffer.append(" public void deleteData(Long pk);").append(ENTER);
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("}");
buffer.append(ENTER);
FileUtils.save("output-code/" + ROOT_PACKAGE.replaceAll("\\.", "/") + "/service/" + className + "Service.java", buffer.toString());
}
/***
* 创建Service层的实现类
* 这里跟Dao的实现的都继承了EntityDaoSupport，主要是为了体现三层service分成的体验保留.
* createServiceImplClass
* @param table
*/
public void createServiceImplClass(String table) {
String className = getClassName(getTableConstantName(table));
String objectName = StringUtils.uncapitalize(className);
StringBuilder buffer = new StringBuilder();
buffer.append("package " + ROOT_PACKAGE + ".service.impl;");
buffer.append("import java.io.Serializable;").append(ENTER);
buffer.append("import java.util.List;").append(ENTER);
buffer.append("import org.springframework.beans.factory.annotation.Autowired;").append(ENTER);
buffer.append("import org.springframework.stereotype.Service;").append(ENTER);
buffer.append("import com.flong.commons.persistence.bean.SimplePage;").append(ENTER);
buffer.append("import com.flong.commons.persistence.dao.impl.EntityDaoSupport;").append(ENTER);
buffer.append("import com.flong.modules.dao."+className+"Dao;").append(ENTER);
buffer.append("import com.flong.modules.pojo."+className+";").append(ENTER);
buffer.append("import com.flong.modules.service."+className+"Service;").append(ENTER);
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("/**\n * @Created：" + NOW_DATE + "\n * @Author " + AUTHOR + "\n");
buffer.append(" * @Version:").append(Version).append(ENTER);
buffer.append(" * @Description:").append(className).append(ENTER);
buffer.append(" * @Email:").append(myEmail).append("\n*/");
buffer.append(ENTER);
buffer.append("@Service");
buffer.append(ENTER);
buffer.append("public class " + className + "ServiceImpl extends EntityDaoSupport implements " + className + "Service {").append(ENTER);
buffer.append("@Autowired "+className+"Dao "+objectName+"Dao;");
buffer.append("/**查询*/").append(ENTER);
buffer.append(" public List<"+className+"> list(SimplePage simplePage,"+className+" "+objectName+"){").append(ENTER);
buffer.append(" return "+objectName+"Dao.list(simplePage,"+objectName+");").append(ENTER);
buffer.append("}").append(ENTER);//查询的结束{
buffer.append("/**保存数据*/").append(ENTER);
buffer.append(" public void saveData("+className+" "+objectName+"){").append(ENTER);
buffer.append( objectName+"Dao.saveData("+objectName+");").append(ENTER);
buffer.append("}");
buffer.append("/**更新数据*/").append(ENTER);
buffer.append(" public void updateData("+className+" "+objectName+"){").append(ENTER);
buffer.append( objectName+"Dao.updateData("+objectName+");").append(ENTER);
buffer.append("}");
buffer.append("/**删除数据*/").append(ENTER);
buffer.append(" public void deleteData(Long pk){").append(ENTER);
buffer.append( objectName+"Dao.deleteData(pk);").append(ENTER);
buffer.append("}");
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("}");
buffer.append(ENTER);
FileUtils.save("output-code/" + ROOT_PACKAGE.replaceAll("\\.", "/") + "/service/impl/" + className + "ServiceImpl.java", buffer.toString());
}
/***
* 创建控制层类Controller
* @param table
*/
public void createControllerClass(String table){
//类名
String className = getClassName(getTableConstantName(table));
//通过 org.apache.commons.lang3.StringUtils的uncapitalize方法把类名第一个字母转换成小写
String objectName = StringUtils.uncapitalize(className);
//通过 org.apache.commons.lang3.StringUtils的lowerCase方法把类名整个单词转化成小写然后为springmvc的路径返回jsp请求.
String BASE_PATH="modules/"+StringUtils.lowerCase(className)+"/";//modules+模块名
StringBuilder buffer = new StringBuilder();
/*******处理这个导入需要的类*********/
buffer.append("import java.util.List;").append(ENTER);
buffer.append("import javax.servlet.http.HttpServletRequest;").append(ENTER);
buffer.append("import javax.servlet.http.HttpServletResponse;").append(ENTER);
buffer.append("import org.springframework.beans.factory.annotation.Autowired;").append(ENTER);
buffer.append("import org.springframework.stereotype.Controller;").append(ENTER);
buffer.append("import org.springframework.web.bind.annotation.RequestMapping;").append(ENTER);
buffer.append("import com.flong.commons.persistence.bean.SimplePage;").append(ENTER);
buffer.append("import com.flong.commons.web.BaseController;").append(ENTER);
buffer.append("import com.flong.modules.pojo."+className+";").append(ENTER);
buffer.append("import com.flong.modules.service."+className+"Service;").append(ENTER);
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("/**\n * @Created：" + NOW_DATE + "\n * @Author " + AUTHOR + "\n");
buffer.append(" * @Version:").append(Version).append(ENTER);
buffer.append(" * @Description:").append(className).append(ENTER);
buffer.append(" * @Email:").append(myEmail).append("\n*/");
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("@Controller").append(ENTER);
buffer.append("@RequestMapping(\""+StringUtils.lowerCase(className)+"\")");
buffer.append(ENTER);
buffer.append("public class " + className + "Controller extends BaseController {");
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append(" @Autowired "+className+"Service " +className+"Service");//注入Service层的接口Name
buffer.append(ENTER);
//创建一个默认的查询..
buffer.append(ENTER);
buffer.append(" @RequestMapping(value=\"list\")").append(ENTER);
buffer.append(" public String list("+className+" "+objectName+",SimplePage simplePage ,HttpServletRequest request ,HttpServletResponse response){");
buffer.append(ENTER);
buffer.append(" List<"+className+"> list = "+className+"Service.list(simplePage, "+objectName+");");
buffer.append(ENTER);
buffer.append(" request.setAttribute(\""+objectName+"\", object);");
buffer.append(ENTER);
buffer.append(" request.setAttribute(\"page\", simplePage);");
buffer.append(ENTER);
buffer.append(" request.setAttribute(\"list\", list);");
buffer.append(ENTER);
buffer.append(" return \""+BASE_PATH+"list\";");
buffer.append(ENTER);
buffer.append(" }");
buffer.append(ENTER);
buffer.append("}");
buffer.append(ENTER);
FileUtils.save("output-code/" + ROOT_PACKAGE.replaceAll("\\.", "/") + "/controller/" + className + "Controller.java", buffer.toString());
}
/***
* 创建JSP页面.
* 以bootstrap3.x为主.
* @param table
*/
public void createJspView(String table)throws Exception{
String tableConstantName = getTableConstantName(table);
String className = getClassName(tableConstantName);//获取类名
//通过 org.apache.commons.lang3.StringUtils的uncapitalize方法把类名第一个字母转换成小写
String objectName = StringUtils.uncapitalize(className);
StringBuilder buffer = new StringBuilder();
buffer.append(" <%@ page language=\"java\" contentType=\"text/html; charset=UTF-8\" pageEncoding=\"UTF-8\"%>").append(ENTER);
//这个就标注一下，这个taglib.jsp文件是JSTL的EL表达式，Spring 标签，自定义标签，等的文件。
buffer.append(" <%@ include file=\"/WEB-INF/views/include/taglib.jsp\"%>").append(ENTER);
buffer.append(" <!DOCTYPE htm>").append(ENTER);
buffer.append(" <html>").append(ENTER);
buffer.append(" <head>").append(ENTER);
//添加一个插件公共的文件，这个我就不一一备注
buffer.append(" <%@ include file=\"/WEB-INF/views/include/meta.jsp\"%>").append(ENTER);
buffer.append(" <%@ include file=\"/WEB-INF/views/include/include.jsp\"%>").append(ENTER);
buffer.append(" <title></title>").append(ENTER);
/**=======================添加style===Begin====================**/
buffer.append(" <style>").append(ENTER);
buffer.append(" .breadcrumb{").append(ENTER);
buffer.append(" background-color: #fff;").append(ENTER);
buffer.append(" }").append(ENTER);
buffer.append(" .form-search{").append(ENTER);
buffer.append(" background-color: #fff;").append(ENTER);
buffer.append(" }").append(ENTER);
buffer.append(" .form-search1{").append(ENTER);
buffer.append(" padding: 8px 15px;").append(ENTER);
buffer.append(" background-color: #f5f5f5;").append(ENTER);
buffer.append(" }").append(ENTER);
buffer.append(" </style>").append(ENTER);
buffer.append(" </head>").append(ENTER);
/**=======================添加style===End====================**/
buffer.append("<body>").append(ENTER);
buffer.append("<ul class=\"nav nav-tabs\">").append(ENTER);
buffer.append( "<li class=\"active\"><a href=\"${basePath}"+StringUtils.lowerCase(className)+"/list\">"+className+"列表</a></li>").append(ENTER);
buffer.append("</ul>").append(ENTER);
buffer.append( " <form:form id=\"searchForm\" modelAttribute=\""+className+"\" action=\"${basePath}"+StringUtils.lowerCase(className)+"/list\" method=\"post\" class=\"breadcrumb form-search form-inline\">").append(ENTER);
buffer.append(" <div style=\"margin-bottom: 20px;\" class=\"form-search1\">").append(ENTER);
//这里可以判断数据库的字段的类型做变量弄处理条件查询.
for (Map<String, Object> col : getCols(table)) {
//判断如果是数据库表的字段是DateTime类型的就设值My97DatePicker插件上,方便大家使用.
if(Class.forName(col.get(CLASS).toString()).isAssignableFrom(Date.class) || Class.forName(col.get(CLASS).toString()) == Timestamp.class) {
buffer.append("<input id=\""+col.get(NAME).toString()+"\" name=\""+col.get(NAME).toString()+"\" type=\"text\" readonly=\"readonly\" maxlength=\"20\" class=\"Wdate\"").append(ENTER);
//在这里用了$是为了查询的时候保留值.
buffer.append(" value=\"<fmt:formatDate value=\"${"+className+"."+col.get(NAME).toString()+"}\" pattern=\"yyyy-MM-dd HH:mm:ss\"/>\"").append(ENTER);
buffer.append(" onclick=\"WdatePicker({dateFmt:'yyyy-MM-dd HH:mm:ss',isShowClear:false});\"/>").append(ENTER);
} else if(getClassName(col.get(NAME).toString()).equals(Class.forName(col.get(CLASS).toString()).getSimpleName())) {
//form:input是spring架构的input标签path必须要等于实体类要有的属性.否则会报错.placeholder是html5有的占位符的属性,
//htmlEscape也是spring的有属性.在这个jar下面,因为我这个工程是用maven搭建的，所有拷贝的时候,拷贝的时候它带上路径.方便大家伙找jar,而且我在这的spring是用3.x
//C:\Users\liangjilong\.m2\repository\org\springframework\org.springframework.web.servlet\3.1.1.RELEASE\org.springframework.web.servlet-3.1.1.RELEASE.jar
//org.springframework.web.servlet-3.1.1.RELEASE.jar这个文件下面有一个spring-from.tld文件，可以找到path,htmlEscape等属性.
buffer.append(" <label>"+col.get(NAME).toString()+" ：</label><form:input path=\""+col.get(NAME).toString()+"\" htmlEscape=\"false\" maxlength=\"50\" class=\"input-medium form-control\" placeholder=\""+col.get(NAME).toString()+"\"/>").append(ENTER);
}else{
buffer.append(" <label>"+col.get(NAME).toString()+" ：</label><form:input path=\""+col.get(NAME).toString()+"\" htmlEscape=\"false\" maxlength=\"50\" class=\"input-medium form-control\" placeholder=\""+col.get(NAME).toString()+"\"/>").append(ENTER);
}
buffer.append(ENTER);
}
//btn btn-info这个样式用过bootstrap的人都知道这个是.
buffer.append(" <input id=\"btnSubmit\" class=\"btn btn-info\" type=\"submit\" value=\"查询\"/>").append(ENTER);
buffer.append(" </div>").append(ENTER);
buffer.append("<table id=\"contentTable\" class=\"table table-striped table-bordered table-hover\">").append(ENTER);
buffer.append("<thead>").append(ENTER);//thead标签End
buffer.append("<tr>").append(ENTER);//tr标签End
/*******遍历列表的th的列*****/
for (Map<String, Object> col : getTableRemarks(table)) {
for (String k : col.keySet()){
String colName = col.get(k).toString();
buffer.append("<th>").append(colName).append("</th>");
buffer.append(ENTER);
}
}
buffer.append("<th>操作</th> ");
buffer.append(ENTER);
buffer.append("</tr>").append(ENTER);
buffer.append("</thead>").append(ENTER);
buffer.append("<tbody>").append(ENTER);
/*******遍历列表的td的列*****/
buffer.append(" <c:forEach items=\"${list}\" var=\""+objectName+"\" varStatus=\"row\">").append(ENTER);
buffer.append(" <tr>").append(ENTER);
buffer.append(" <td>${row.index+1 }</td>").append(ENTER);
for (Map<String, Object> col : getCols(table)) {
buffer.append(" <td>");
if(Class.forName(col.get(CLASS).toString()).isAssignableFrom(Date.class) || Class.forName(col.get(CLASS).toString()) == Timestamp.class) {
//如果是Date类型就转换用EL表达式格式化fmt:formatDate
buffer.append("<fmt:formatDate value=\"${"+objectName+"."+col.get(NAME).toString()+"}\" type=\"date\" dateStyle=\"long\"/>");
} else if(getClassName(col.get(NAME).toString()).equals(Class.forName(col.get(CLASS).toString()).getSimpleName())) {
buffer.append(" ${"+objectName+"."+col.get(NAME).toString()+"}" );
}else{
buffer.append(" ${"+objectName+"."+col.get(NAME).toString()+"}" );
}
buffer.append("</td>");
buffer.append(ENTER);
}
buffer.append(" </tr>").append(ENTER);
buffer.append(" </c:forEach>").append(ENTER);
buffer.append("</tbody>").append(ENTER);//tbody标签结束.
buffer.append("</table>").append(ENTER);
//这个是pagination.jsp是分页文件.
buffer.append("<%@ include file=\"/WEB-INF/views/include/pagination.jsp\"%>").append(ENTER);
buffer.append("</form:form>").append(ENTER);//form:form标签结束.
buffer.append("</body>").append(ENTER);//body标签结束.
buffer.append("</html>").append(ENTER);//html标签结束.
buffer.append(ENTER);
buffer.append(ENTER);
FileUtils.save("output-code/" + ROOT_PACKAGE.replaceAll("\\.", "/") + "/jsp/" + className + ".jsp", buffer.toString());
}
/***
* 创建表的类定义常量
* @param tables
*/
public void createTableClass(List<String> tables) {
StringBuilder buffer = new StringBuilder();
buffer.append("package " + ROOT_PACKAGE + ".domain;");
buffer.append(ENTER);
buffer.append(ENTER);
buffer.append("/**\n * @Created：" + NOW_DATE + "\n * @Author " + AUTHOR + "\n");
buffer.append(" * @Version:").append(Version).append(ENTER);
buffer.append(" * @Email:").append(myEmail).append("\n*/");
buffer.append(ENTER);
buffer.append("public interface Table {");
buffer.append(ENTER);
for (String table : tables) {
buffer.append(TAB);
buffer.append("String " + getTableConstantName(table) + " = \"" + table.toUpperCase() + "\";");
buffer.append(ENTER);
}
buffer.append(ENTER);
buffer.append("}");
buffer.append(ENTER);
FileUtils.save("output-code/" + ROOT_PACKAGE.replaceAll("\\.", "/") + "/domain/Table.java", buffer.toString());
}
/***
* 获取数据库表名
* @return
* @throws Exception
*/
public List<String> getTables() throws Exception {
List<Object> params = new ArrayList<Object>();
//System.out.println("==========="+DB_NAME);
//params.add(DB_NAME);
String dbname=DB_NAME;
params.add(dbname);
ResultSet rs = DBHelperUtils.query("select table_name from information_schema.tables where table_schema = ? order by table_name", params);
List<String> tables = new ArrayList<String>();
while (rs.next()) {
tables.add(rs.getString(1));
}
return tables;
}
/***
* 列名 类型 => 说明
* TABLE_CAT String => 表 catalog
* TABLE_SCHEM String => 表 schema
* TABLE_NAME String => 表名
* TABLE_TYPE String => 表类型
* REMARKS String => 表注释
* 获取表的列
* @param table
* @return
* @throws Exception
*/
private List<Map<String, Object>> getCols(String table) throws Exception {
List<Map<String, Object>> cols = new ArrayList<Map<String,Object>>();
ResultSetMetaData md = DBHelperUtils.query("select * from " + table + " where 1 = 2", null).getMetaData();
for (int i = 1; i <= md.getColumnCount(); i++) {
Map<String, Object> col = new HashMap<String, Object>();
cols.add(col);
col.put(NAME, md.getColumnName(i));
col.put(CLASS, md.getColumnClassName(i));
col.put(SIZE, md.getColumnDisplaySize(i));
col.put(REMARKS, md.getColumnName(i));
/* System.out.println("1"+ md.getCatalogName(i));
System.out.println("2"+ md.getColumnClassName(i));
System.out.println("3"+ md.getColumnDisplaySize(i));
System.out.println("4"+ md.getColumnType(i));
System.out.println("5"+ md.getSchemaName(i));
System.out.println("6"+ md.getPrecision(i));
System.out.println("7"+ md.getScale(i));*/
String _type = null;
String type = md.getColumnTypeName(i);
if(type.equals("INT")) {
_type = "INTEGER";
} else if(type.equals("DATETIME")) {
_type = "TIMESTAMP";
} else {
_type = type;
}
col.put(TYPE, _type);
}
return cols;
}
/**
* 获取所有表
* @param conn
* @throws SQLException
*/
public static List<Map<String, Object>> getAllTable() throws SQLException {
/**
* 定义一个Lis
*/
List<Map<String, Object>> cols = new ArrayList<Map<String,Object>>();
DatabaseMetaData metaData = DBHelperUtils.getInstance().getDatabaseMetaData();
//这个是获取所有表.
ResultSet rs = metaData.getTables(null, "%", "%", new String[] {"TABLE"});
while (rs.next()) {
String tableName = rs.getString("TABLE_NAME");////这个是获取表名
if(tableName!=null){
Map<String, Object> col = new HashMap<String, Object>();
// rs =getConnection.getMetaData().getColumns(null, getXMLConfig.getSchema(),tableName.toUpperCase(), "%");
//其他数据库不需要这个方法的，直接传null，这个是oracle和db2这么用
ResultSet rs1 = metaData.getColumns(null, "%", tableName, "%");
while(rs1.next()){
String COLUMN_NAME = rs1.getString("COLUMN_NAME");
String REMARKS = rs1.getString("REMARKS");
//先判断备注是否为空,不为空就取表的字段的注释说明，否则的话就去字段列名
if(REMARKS==null||REMARKS==""){
col.put(COLUMN_NAME, COLUMN_NAME);
}else{
col.put(REMARKS, REMARKS);
}
cols.add(col);
}
}
}
return cols;
}
/***
* 获取列的备注
* @param table
* @return
* @throws SQLException
*/
public static List<Map<String, Object>> getTableRemarks(String table) throws SQLException {
List<Map<String, Object>> cols = new ArrayList<Map<String,Object>>();
Connection conn=DBHelperUtils.getInstance().getConnection();
DatabaseMetaData metaData = conn.getMetaData();
ResultSet rs = metaData.getTables(null, "%", "%", new String[] {"TABLE"});
while (rs.next()) {
String tableName = rs.getString("TABLE_NAME");
//传进来的表名和查询出来的表名作对比，并且是忽略大小写
if(tableName!=null){
if(table.equalsIgnoreCase(tableName)){
Map<String, Object> col = new HashMap<String, Object>();
//Map<String, Object> col = new HashTable<String, Object>();
ResultSet rs1 = metaData.getColumns(null, "%", tableName, "%");
while(rs1.next()){
String COLUMN_NAME = rs1.getString("COLUMN_NAME");
String REMARKS = rs1.getString("REMARKS");
//先判断备注是否为空,不为空就取表的字段的注释说明，否则的话就去字段列名
if(REMARKS==null||REMARKS==""){
col.put(COLUMN_NAME, COLUMN_NAME);
}else{
col.put(REMARKS, REMARKS);
}
//去掉重复的数据
col = removeRepeatData();
cols.add(col);
}
break;
}
}
}
return cols;
}
/**
* 获取表的主键.
* @param tableName
*/
public static String getTablePrimaryKeys(String tableName)throws Exception{
DatabaseMetaData metaData = DBHelperUtils.getInstance().getDatabaseMetaData();
ResultSet pkRSet = metaData.getPrimaryKeys(null, null, tableName);
String primaryKey = "";
if(pkRSet.next() ) {
//把这个列的名称获取出来
primaryKey = pkRSet.getString("PK_NAME");//PK_NAME/COLUMN_NAME
primaryKey=(primaryKey==null?"":primaryKey);
System.out.println(primaryKey);
}
return primaryKey;
}
/**
* 获取表的主键和外键包括外键表的名
* @param tableName
*/
public static String[] getTablePrimaryKeyForeignKey(String tableName)throws Exception{
DatabaseMetaData metaData = DBHelperUtils.getInstance().getDatabaseMetaData();
ResultSet fkSet = metaData.getPrimaryKeys(null, null, tableName);
String pkColumnName="",fkColumnName="",pkTablenName="";
String [] paramsKey= new String[3];
while(fkSet.next()){
pkColumnName = fkSet.getString("PK_NAME");//主键在网查到的有可能是PKCOLUMN_NAME
fkColumnName = fkSet.getString("FK_NAME");//外键网查到的有可能是PKCOLUMN_NAME
pkTablenName = fkSet.getString("PKTABLE_NAME");//主键表名
//System.out.println(pkColumnName+fkColumnName+pkTablenName);
pkColumnName=(pkColumnName==null?"":pkColumnName);
fkColumnName=(fkColumnName==null?"":fkColumnName);
pkTablenName=(pkTablenName==null?"":pkTablenName);
paramsKey[0]=fkColumnName;
paramsKey[1]=fkColumnName;
paramsKey[2]=pkTablenName;
}
return paramsKey;
}
/***
* 去掉重复的数据
* @return
*/
private static Map<String, Object> removeRepeatData() {
Map<String, Object> col = new HashMap<String, Object>();
Set<String> keySet = col.keySet();
for (String str : keySet) {
col.put(str, str);
}
return col;
}
/***
* 获取表的常量名，一般是在数据库建表的时候，写的注释..
* @param table
* @return
*/
private String getTableConstantName(String table) {
String tableConstantName = table.toUpperCase();
for (String item : IGNORE_TABLE_PREFIX) {
tableConstantName = tableConstantName.replaceAll("^" + item.toUpperCase(), "");
}
return tableConstantName;
}
/***
* 获取类的名
* @param name
* @return
*/
private String getClassName(String name) {
String[] names = name.split("_");
StringBuilder sb = new StringBuilder();
for (String n : names) {
if(n.length() == 0) {
sb.append("_");
} else {
sb.append(n.substring(0, 1).toUpperCase());
if(n.length() > 1) {
sb.append(n.substring(1).toLowerCase());
}
}
}
return sb.toString();
}
/**
* 获取字段名
* @param name
* @return
*/
private String getFieldName(String name) {
String _name = getClassName(name);
return _name.substring(0, 1).toLowerCase() + _name.substring(1);
}
/**
* 转换成泛型Map
* @param limit
* @param rs
* @return
* @throws SQLException
*/
public static List<Map> toListMap(int limit, ResultSet rs)throws SQLException {
ResultSetMetaData rsmd = rs.getMetaData();
int count = 0;
List list = new ArrayList();
while (rs.next()) {
Map row = new HashMap();
for (int i = 1; i <= rsmd.getColumnCount(); i++) {
row.put(rsmd.getColumnName(i), rs.getObject(i));
}
list.add(row);
count++;
if (count >= limit) {
break;
}
}
return list;
}
/***
* 获取查询list
* @param conn
* @param sql
* @param limit
* @return
* @throws SQLException
*/
public static List<Map> queryForList(Connection conn, String sql, int limit)throws SQLException {
PreparedStatement ps = conn.prepareStatement(sql.trim());
ps.setMaxRows(limit);
ps.setFetchDirection(1000);
ResultSet rs = ps.executeQuery();
return toListMap(limit, rs);
}
/***
* 获取查询list
* @param conn
* @param sql
* @param limit
* @return
* @throws SQLException
*/
public static List<Map> queryForList(String sql, int limit) throws SQLException {
Connection conn = DBHelperUtils.getConnection();
return queryForList(conn, sql, limit);
}
/***
* 生成所有Entity,Dao,Service,Controller,JSP 代码
* @throws Exception
*/
public void createAllCodeGenerator()throws Exception{
List<String> tables = getTables();
for (String table : tables) {
createEntityClass(table);//this is method create Entity
createDaoClass(table);//this is method create Dao Interface
createDaoImplClass(table);//this is method create Dao implement
createServiceClass(table);//this is method create Service Interface
createServiceImplClass(table);//this is method create Service implement
createControllerClass(table);//this is method create Controller
createJspView(table);//this is method JspView
}
createTableClass(tables);
}
public static void main(String[] args)throws Exception {
String sql="select * from SYS_MENU ";
//List<Map> queryForList = queryForList(sql, 1000);
/*for(Map m:queryForList){
System.out.println("======"+m);
}*/
String tableName = "SYS_MENU";//表名
/* List<Map<String, Object>> tableRemarks = getTableRemarks(tableName);
int i=0;
for (Map<String, Object> col : getTableRemarks(tableName)) {
Set<String> keySet = col.keySet();
for (Object str : keySet) {
//System.out.println(str);
}
}
*/
//getTablePrimaryKeys("test");
//new CodeGenerator().createJspView("sup_email");
new CodeGenerator().createEntityClass("test");
//new CodeGenerator().getTablePrimaryKeyForeignKey("test");
//String myId="My_id";
//boolean endsWith = myId.toString().toUpperCase().endsWith("_ID");
//if(col.get(NAME).toString().equalsIgnoreCase("ID") || col.get(NAME).toString().toUpperCase().endsWith("_ID"))
//if(endsWith){
//System.out.println(11111);
//}
//createAllCodeGenerator();
}
}
package com.flong.codegenerator;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
/***
*@Author:liangjilong
*@Date:2015年12月5日下午12:25:12
*@Email:jilongliang@sina.com
*@Version:1.0
*@CopyRight(c)Flong Intergrity Ltd.
*/
@SuppressWarnings("all")
public class DBHelperUtils {
private static final Connection conn;
private static final String driverClass = PropertiesHelper.getValueByKey("jdbc.driver");
private static final String connectionUrl = PropertiesHelper.getValueByKey("jdbc.url");
private static final String username = PropertiesHelper.getValueByKey("jdbc.username");
private static final String password = PropertiesHelper.getValueByKey("jdbc.password");
private static DBHelperUtils instance = null;
/**
* 定义代码块.
*/
static {
try {
Class.forName(driverClass);
conn = DriverManager.getConnection(connectionUrl, username, password);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**建立单例模式
* Single
* @return
*/
public static DBHelperUtils getInstance() {
if (instance == null) {
synchronized (DBHelperUtils.class) {
instance = new DBHelperUtils();
}
}
return instance;
}
/**
* 查询数据
* @param sql
* @param params
* @return
*/
public static ResultSet query(String sql, List<Object> params) {
System.out.println("sql: " + sql);
//System.out.println("params: " + params);
try {
PreparedStatement psmt = conn.prepareStatement(sql);
if(params != null) {
for (int i = 0; i < params.size(); i++) {
psmt.setObject(i+1, params.get(i));
}
}
return psmt.executeQuery();
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
/***
* 更新
* @param sql
* @param params
*/
public static void update(String sql, List<Object> params) {
System.out.println("sql: " + sql);
//System.out.println("params: " + params);
try {
PreparedStatement psmt = conn.prepareStatement(sql);
if(params != null) {
for (int i = 0; i < params.size(); i++) {
psmt.setObject(i+1, params.get(i));
}
}
psmt.executeUpdate();
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
/**
* 获取链接
* @return
*/
public static Connection getConnection(){
try {
Class.forName(driverClass);
return DriverManager.getConnection(connectionUrl, username, password);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 获取数据DatabaseMetaData对象
* @return
*/
public DatabaseMetaData getDatabaseMetaData(){
try {
return getInstance().getConnection().getMetaData();
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
/**
* 获得数据库的一些相关信息
*/
public void getDataBaseInformations() {
try {
System.out.println("数据库已知的用户: "+ getDatabaseMetaData().getUserName());
System.out.println("数据库的系统函数的逗号分隔列表: "+ getDatabaseMetaData().getSystemFunctions());
System.out.println("数据库的时间和日期函数的逗号分隔列表: "+ getDatabaseMetaData().getTimeDateFunctions());
System.out.println("数据库的字符串函数的逗号分隔列表: "+ getDatabaseMetaData().getStringFunctions());
System.out.println("数据库供应商用于 'schema' 的首选术语: "+ getDatabaseMetaData().getSchemaTerm());
System.out.println("数据库URL: " + getDatabaseMetaData().getURL());
System.out.println("是否允许只读:" + getDatabaseMetaData().isReadOnly());
System.out.println("数据库的产品名称:" + getDatabaseMetaData().getDatabaseProductName());
System.out.println("数据库的版本:" + getDatabaseMetaData().getDatabaseProductVersion());
System.out.println("驱动程序的名称:" + getDatabaseMetaData().getDriverName());
System.out.println("驱动程序的版本:" + getDatabaseMetaData().getDriverVersion());
System.out.println();
System.out.println("数据库中使用的表类型");
ResultSet rs = getDatabaseMetaData().getTableTypes();
while (rs.next()) {
System.out.println(rs.getString(1));
}
rs.close();
System.out.println();
} catch (SQLException e) {
e.printStackTrace();
}
}
/**
* 获得该用户下面的所有表
*/
public void getAllTableList(String schemaName) {
try {
// table type. Typical types are "TABLE", "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY", "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
String[] types = { "TABLE" };
ResultSet rs = getDatabaseMetaData().getTables(null, schemaName, "%", types);
while (rs.next()) {
String tableName = rs.getString("TABLE_NAME"); //表名
String tableType = rs.getString("TABLE_TYPE"); //表类型
String remarks = rs.getString("REMARKS"); //表备注
System.out.println(tableName + "-" + tableType + "-" + remarks);
}
} catch (SQLException e) {
e.printStackTrace();
}
}
/**
* 获得该用户下面的所有视图
*/
public void getAllViewList(String schemaName) {
try{
String[] types = { "VIEW" };
ResultSet rs = getDatabaseMetaData().getTables(null, schemaName, "%", types);
while (rs.next()){
String viewName = rs.getString("TABLE_NAME"); //视图名
String viewType = rs.getString("TABLE_TYPE"); //视图类型
String remarks = rs.getString("REMARKS"); //视图备注
System.out.println(viewName + "-" + viewType + "-" + remarks);
}
} catch (SQLException e) {
e.printStackTrace();
}
}
/**
* 获得数据库中所有方案名称
*/
public void getAllSchemas(){
try{
ResultSet rs = getDatabaseMetaData().getSchemas();
while (rs.next()){
String tableSchem = rs.getString("TABLE_SCHEM");
System.out.println(tableSchem);
}
} catch (SQLException e){
e.printStackTrace();
}
}
/**
* 获得表或视图中的所有列信息
*/
public void getTableColumns(String schemaName, String tableName) {
try{
ResultSet rs = getDatabaseMetaData().getColumns(null, schemaName, tableName, "%");
while (rs.next()){
String tableCat = rs.getString("TABLE_CAT");//表目录（可能为空）
String tableSchemaName = rs.getString("TABLE_SCHEM");//表的架构（可能为空）
String tableName_ = rs.getString("TABLE_NAME");//表名
String columnName = rs.getString("COLUMN_NAME");//列名
int dataType = rs.getInt("DATA_TYPE"); //对应的java.sql.Types类型
String dataTypeName = rs.getString("TYPE_NAME");//java.sql.Types类型 名称
int columnSize = rs.getInt("COLUMN_SIZE");//列大小
int decimalDigits = rs.getInt("DECIMAL_DIGITS");//小数位数
int numPrecRadix = rs.getInt("NUM_PREC_RADIX");//基数（通常是10或2）
int nullAble = rs.getInt("NULLABLE");//是否允许为null
String remarks = rs.getString("REMARKS");//列描述
String columnDef = rs.getString("COLUMN_DEF");//默认值
int sqlDataType = rs.getInt("SQL_DATA_TYPE");//sql数据类型
int sqlDatetimeSub = rs.getInt("SQL_DATETIME_SUB"); //SQL日期时间分?
int charOctetLength = rs.getInt("CHAR_OCTET_LENGTH"); //char类型的列中的最大字节数
int ordinalPosition = rs.getInt("ORDINAL_POSITION"); //表中列的索引（从1开始）
/**
* ISO规则用来确定某一列的为空性。
* 是---如果该参数可以包括空值;
* 无---如果参数不能包含空值
* 空字符串---如果参数为空性是未知的
*/
String isNullAble = rs.getString("IS_NULLABLE");
/**
* 指示此列是否是自动递增
* 是---如果该列是自动递增
* 无---如果不是自动递增列
* 空字串---如果不能确定它是否
* 列是自动递增的参数是未知
*/
String isAutoincrement = rs.getString("IS_AUTOINCREMENT");
System.out.println(tableCat + "-" + tableSchemaName + "-" + tableName_ + "-" + columnName + "-"
+ dataType + "-" + dataTypeName + "-" + columnSize + "-" + decimalDigits + "-" + numPrecRadix
+ "-" + nullAble + "-" + remarks + "-" + columnDef + "-" + sqlDataType + "-" + sqlDatetimeSub
+ charOctetLength + "-" + ordinalPosition + "-" + isNullAble + "-" + isAutoincrement + "-");
}
} catch (SQLException e){
e.printStackTrace();
}
}
/**
* 获得一个表的索引信息
*/
public void getIndexInfo(String schemaName, String tableName) {
try{
ResultSet rs = getDatabaseMetaData().getIndexInfo(null, schemaName, tableName, true, true);
while (rs.next()){
boolean nonUnique = rs.getBoolean("NON_UNIQUE");//非唯一索引(Can index values be non-unique. false when TYPE is tableIndexStatistic )
String indexQualifier = rs.getString("INDEX_QUALIFIER");//索引目录（可能为空）
String indexName = rs.getString("INDEX_NAME");//索引的名称
short type = rs.getShort("TYPE");//索引类型
short ordinalPosition = rs.getShort("ORDINAL_POSITION");//在索引列顺序号
String columnName = rs.getString("COLUMN_NAME");//列名
String ascOrDesc = rs.getString("ASC_OR_DESC");//列排序顺序:升序还是降序
int cardinality = rs.getInt("CARDINALITY"); //基数
System.out.println(nonUnique + "-" + indexQualifier + "-" + indexName + "-" + type + "-" + ordinalPosition + "-" + columnName + "-" + ascOrDesc + "-" + cardinality);
}
} catch (SQLException e){
e.printStackTrace();
}
}
/**
* 获得一个表的主键信息
*/
public void getAllPrimaryKeys(String schemaName, String tableName) {
try{
ResultSet rs = getDatabaseMetaData().getPrimaryKeys(null, schemaName, tableName);
while (rs.next()){
String columnName = rs.getString("COLUMN_NAME");//列名
short keySeq = rs.getShort("KEY_SEQ");//序列号(主键内值1表示第一列的主键，值2代表主键内的第二列)
String pkName = rs.getString("PK_NAME"); //主键名称
System.out.println(columnName + "-" + keySeq + "-" + pkName);
}
}catch (SQLException e){
e.printStackTrace();
}
}
/**
* 获得一个表的外键信息
*/
public void getAllExportedKeys(String schemaName, String tableName) {
try{
ResultSet rs = getDatabaseMetaData().getExportedKeys(null, schemaName, tableName);
while (rs.next()){
String pkTableCat = rs.getString("PKTABLE_CAT");//主键表的目录（可能为空）
String pkTableSchem = rs.getString("PKTABLE_SCHEM");//主键表的架构（可能为空）
String pkTableName = rs.getString("PKTABLE_NAME");//主键表名
String pkColumnName = rs.getString("PKCOLUMN_NAME");//主键列名
String fkTableCat = rs.getString("FKTABLE_CAT");//外键的表的目录（可能为空）出口（可能为null）
String fkTableSchem = rs.getString("FKTABLE_SCHEM");//外键表的架构（可能为空）出口（可能为空）
String fkTableName = rs.getString("FKTABLE_NAME");//外键表名
String fkColumnName = rs.getString("FKCOLUMN_NAME"); //外键列名
short keySeq = rs.getShort("KEY_SEQ");//序列号（外键内值1表示第一列的外键，值2代表在第二列的外键）。
/**
* hat happens to foreign key when primary is updated:
* importedNoAction - do not allow update of primary key if it has been imported
* importedKeyCascade - change imported key to agree with primary key update
* importedKeySetNull - change imported key to NULL if its primary key has been updated
* importedKeySetDefault - change imported key to default values if its primary key has been updated
* importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
*/
short updateRule = rs.getShort("UPDATE_RULE");
/**
* What happens to the foreign key when primary is deleted.
* importedKeyNoAction - do not allow delete of primary key if it has been imported
* importedKeyCascade - delete rows that import a deleted key
* importedKeySetNull - change imported key to NULL if its primary key has been deleted
* importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
* importedKeySetDefault - change imported key to default if its primary key has been deleted
*/
short delRule = rs.getShort("DELETE_RULE");
String fkName = rs.getString("FK_NAME");//外键的名称（可能为空）
String pkName = rs.getString("PK_NAME");//主键的名称（可能为空）
/**
* can the evaluation of foreign key constraints be deferred until commit
* importedKeyInitiallyDeferred - see SQL92 for definition
* importedKeyInitiallyImmediate - see SQL92 for definition
* importedKeyNotDeferrable - see SQL92 for definition
*/
short deferRability = rs.getShort("DEFERRABILITY");
System.out.println(pkTableCat + "-" + pkTableSchem + "-" + pkTableName + "-" + pkColumnName + "-"
+ fkTableCat + "-" + fkTableSchem + "-" + fkTableName + "-" + fkColumnName + "-" + keySeq + "-"
+ updateRule + "-" + delRule + "-" + fkName + "-" + pkName + "-" + deferRability);
}
} catch (SQLException e){
e.printStackTrace();
}
}
public void closeResource() {
try {
if (conn != null) {
conn.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws Exception {
DBHelperUtils metaData = new DBHelperUtils();
metaData.getDataBaseInformations();
metaData.getAllTableList(null);
metaData.getAllViewList(null);
metaData.getAllSchemas();
metaData.getTableColumns(null, "test");
metaData.getIndexInfo(null, "test");
metaData.getAllPrimaryKeys(null, "test");
metaData.getAllExportedKeys(null, "test");
}
}
package com.flong.codegenerator;
import java.io.File;
import java.io.FileWriter;
public class FileUtils {
/**
* 把生成的文件都保存.
* @param path
* @param data
*/
public static void save(String path, String data) {
try {
File file = new File(path);
File dir = new File(path.substring(0, path.lastIndexOf("/")));
if(!dir.exists()) {
dir.mkdirs();
}
FileWriter out = new FileWriter(file);
out.write(data);
out.flush();
out.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
package com.flong.codegenerator;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
/***
*@Author:liangjilong
*@Date:2015年12月5日下午12:25:12
*@Email:jilongliang@sina.com
*@Version:1.0
*@CopyRight(c)Flong Intergrity Ltd.
*@Description：读取文properties
*/
public class PropertiesHelper {
private static final Map<String, String> properties = new HashMap<String, String>();
static {
try {
Properties pps = new Properties();
pps.load(PropertiesHelper.class.getClassLoader().getResourceAsStream("prop/DBSource.properties"));
//处理重复的值.
for (Entry<Object, Object> entry : pps.entrySet()) {
properties.put(entry.getKey().toString().trim(), entry.getValue().toString().trim());
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
*通过key值去获取值.
*/
public static String getValueByKey(String name) {
return properties.get(name);
}
}
#mysql database setting jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8 jdbc.username=root jdbc.password=root
其中源码在一个CodeGenerator.Java里面
SQL生成器和代码生成器源代码下载地址 http://download.csdn.NET/detail/l_ji_l/9797834
http://jilongliang.iteye.com/blog/2366511
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