Map转换为Bean（Bean转换成Map）

BeanUtil.java

 

import java.beans.BeanInfo;

import java.beans.Introspector;

import java.beans.PropertyDescriptor;

import java.lang.reflect.Method;

import java.text.NumberFormat;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.HashMap;

import java.util.Map;

import org.apache.commons.beanutil.BeanUtils;

import org.apache.commons.beanutil.Conversionexception;

import org.apache.commons.beanutil.ConvertUtils;

import org.apache.commons.beanutil.Converter;

 

/**

*class和Map互转

*/

public class BeanUtil{

 

//包含有日期

//Map转换为bean,

//理由org.apache.commons.beanutils 工具类实现Map-->Bean

public static void transMap2Bean(Map<String,object> map, object obj,final String fomartDateStr){

if(map==null || obj==null){

return;

}

ConverUtils.register(new Converter(){

@override

public object convert(Class type,object value){

if(value==null || value.equals(''))

return null;

if(!(value instanceof String)){

System.out.println("不是日期类型");

throw new Convertsionexception("不是日期类型");

}

String str=(String)value;

SimpleDateFormat df=new SimpleDateFormat (fomartDateStr);

try{

return df.parse(str);

}catch(ParseException e){

throw new Runtimeexception(e);//异常链不能断

}

}

},Date.class);

try{

BeanUtils.populate(pbj,map);

}catch(Exception e){

System.out.println("transMap2bean2 Error:==="+e);

}

}

 

//没有日期

public static void transMap2Bean(Map<String,object> map, object obj){

if(map==null || obj==null){

return;

}

try{

BeanUtils.populate(obj,map);

}catch(Exception e){

System.out.println("transMap2Bean error====="+e);

}

}

 

 

//Bean转换成Map,

//利用Introsperctor和propertyDescriptor,将Bean转换成Map

 

public static Map(String,object)transBeanMap(Object obj){

if(obj==null){

return null;

}

Map <String,object> map=new HashMap<String,object>();

try{

BeanInfo beaninfo=Introspector.getbeanInfo(obj.getClass());

PropertyDescriptor[] propertyDescriptors=beanInfo.getPropertyDescriptors();

for(PropertyDescriptor property: propertyDescriptors){

String key=property.getName();

//过滤class属性

if(!key.equals("class")){

//得到Property对应的getter方法

Method getter=property.getReadMethod();

object value= getter.invoke(obj);

if(value==null){

map.put(key,null);

}else{

map.put(key,value);

}

}

}

}catch(Exception e){

System.out.println("transBeanMap error====="+e);

}

return map;

}

 

 

 

//wyf实现

//Bean转换成Null,返回为String

//利用Introsperctor和propertyDescriptor,将Bean转换成Null

 

public static String transBeanMap(Object obj){

double num=0;

if(obj==null){

return null;

}

Map <String,object> map=new HashMap<String,object>();

try{

BeanInfo beaninfo=Introspector.getbeanInfo(obj.getClass());

PropertyDescriptor[] propertyDescriptors=beanInfo.getPropertyDescriptors();

for(PropertyDescriptor property: propertyDescriptors){

String key=property.getName();

//过滤class属性

if(!key.equals("class")){

//得到Property对应的getter方法

Method getter=property.getReadMethod();

object value= getter.invoke(obj);

if(value==null || value=""){//判断是否字符串

num++;

}else if(value.equals(0)){//判断是否数字

if(key.equals("id")){//判断是否主键，还可以判断其他不需要的属性

}else{

num++;

}

}else{}

}

}

}catch(Exception e){

System.out.println("transBeanMap error====="+e);

}

 

//算法start

double p3=num/100;

NumberFormat nf=NumberFormat.getPercentInstance();

nf.setMinimumFractionDigits(0);

String beantiful=nf.format(p3);

return beantiful;

}

 

 

//wyf实现

//Bean转换成Null,返回为int

//利用Introsperctor和propertyDescriptor,将Bean转换成Null

 

public static int transBeanMap(Object obj){

int num=0;

if(obj==null){

return num;

}

Map <String,object> map=new HashMap<String,object>();

try{

BeanInfo beaninfo=Introspector.getbeanInfo(obj.getClass());

PropertyDescriptor[] propertyDescriptors=beanInfo.getPropertyDescriptors();

for(PropertyDescriptor property: propertyDescriptors){

String key=property.getName();

//过滤class属性

if(!key.equals("class")){

//得到Property对应的getter方法

Method getter=property.getReadMethod();

object value= getter.invoke(obj);

if(value==null || value=""){//判断是否字符串

num++;

}else if(value.equals(0)){//判断是否数字

if(key.equals("id")){//判断是否主键，还可以判断其他不需要的属性

}else{

num++;

}

}else{}

}

}

}catch(Exception e){

System.out.println("transBeanMap error====="+e);

}

return beantiful;

}

 

public static void main(String[] args){

//wyf

Bean bean=new Bean();

transBeanMap(bean);

 

//验证

Bean vo=new Bean();

final String fomart="yyyy-MM-dd";

Map map=new HashMap();

map.put("a",1);

map.put("fountDate","1988-12-12");

map.put("loginAccount","star");

transMap2Ban(map,vo,fomart);

System.out.println(vo.getfountDate());

System.out.println(vo.getloginAccount());

}

 

 

 

}

 

 

UserManageUtils.java 工具服务类

 

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Map;

 

public class UserManageUtils{

 

//获取系统当前时间

public static Date getNowDate(){

Date currentTime =new Date();

return currentTime ;

}

//获取当前格式的日期类型系统时间执行格式化日期,返回日期

public static Date getNowDateTime(String formatStr)throws ParseException{

Date currentTime =UserManageUtils.getNowDate();

SimpleDateFormat formater=new SimpleDateFormat (formatStr);

String dateString=formater.format(currentTime );

return formater.parse(dateString);

}

 

//获取当前系统时间格式化,返回String

public static Date getStringDateTime(String formatStr)throws ParseException{

Date currentTime =UserManageUtils.getNowDate();

SimpleDateFormat formater=new SimpleDateFormat (formatStr);

String dateString=formater.format(currentTime );

return dateString;

}

 

//将日期类型转换为格式化字符串,返回String

public static Date getParseStrDate(String formatStr)throws ParseException{

SimpleDateFormat formater=new SimpleDateFormat (formatStr);

String dateString=formater.format(currentTime );

return dateString;

}

 

//将字符串类型时间转换为格式日期类型

public static Date getParseStrDate(String cuttentTime.String formatStr)throws ParseException{

SimpleDateFormat formater=new SimpleDateFormat (formatStr);

Date date=formater.parse(currentTime );

return date;

}

 

//将vo转换为map形式

public static Map(Stirng,object) parseObjectBeanToMap(object objectBean){

if(objectBean ==null){

//异常

}

//进行转换，调用BeanUtil.java

return BeanUtil.transBean2Map(objectBean );

}

 

//将map转换为vo形式

public static parseMapToobjectBean(Map<Stirng,object> map,object objectBean,String formartDateStr) {

//进行转换，调用BeanUtil.java

BeanUtil.transBean2Map(map,objectBean,formartDateStr);

return objectBean;

}

 

//Map是否为null

public static int parseObjectToNull(object objectBean){

//进行转换，调用BeanUtil.java

return BeanUtil.transBean2Map(objectBean);

}

 

 

}