首先,建一个web project,然后添加对hibernate和spring的支持,我们使用的是hibernate3.1和spring2.0,然后导入dwr.jar和commons-pool-1.3.jar(不知道myeclipse怎么搞的,添加Spring功能支持的时候就有了commons-dbcp.jar,居然没有其依赖的commons-pool-x.jar,只好单独添加了,另外,需要将Spring2.0 AOP Liberaries里的asm2.2.3.jar删除,因为好像和Hiberate中的生成代理用的asm.jar冲突,我把Spring2.0 AOP Liberaries排到最后仍然有冲突,所以只好删掉了,不知道大家遇到过这种情况么)。
我们使用myeclise自带的Derby数据库,在里面建一个表BOOK:
ID bigint primary key,autoincrement
NAME varchar(20)
ISBM varchar(20)
AUTHOR varchar(15)
然后利用myeclipse的hibernate反向工程生成领域模型:Book.java, DAO:BookDAO.jar, Book 的映射文件Book.hbm.xml:
生成的代码及配置文件如下:
Book.java:
-
- package edu.jlu.fuliang.domain;
- /** *//**
- * Book generated by MyEclipse Persistence Tools
- */
-
- public class Book implements java.io.Serializable {
-
- // Fields
-
- private Long id;
- private String name;
- private String isbm;
- private String author;
-
- // Constructors
-
- /** *//** default constructor */
- public Book() {
- }
-
- /** *//** minimal constructor */
- public Book(Long id, String name, String isbm) {
- this.id = id;
- this.name = name;
- this.isbm = isbm;
- }
-
- /** *//** full constructor */
- public Book(Long id, String name, String isbm, String author) {
- this.id = id;
- this.name = name;
- this.isbm = isbm;
- this.author = author;
- }
-
- // Property accessors
-
- public Long getId() {
- return this.id;
- }
-
- public void setId(Long id) {
- this.id = id;
- }
-
- public String getName() {
- return this.name;
- }
-
- public void setName(String name) {
- this.name = name;
- }
-
- public String getIsbm() {
- return this.isbm;
- }
-
- public void setIsbm(String isbm) {
- this.isbm = isbm;
- }
-
- public String getAuthor() {
- return this.author;
- }
-
- public void setAuthor(String author) {
- this.author = author;
- }
- public String toString(){
- return "[id=" + id + ",name=" + name + ",isbm=" + isbm + ",author=" + author + "]";
- }
- }
edu.jlu.fuliang.dao.BookDAO.java:
- package edu.jlu.fuliang.dao;
-
- import java.util.List;
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
- import org.hibernate.LockMode;
- import org.springframework.context.ApplicationContext;
- import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
-
- import edu.jlu.fuliang.domain.Book;
-
- /** *//**
- * Data access object (DAO) for domain model class Book.
- *
- * @see edu.jlu.fuliang.domain.Book
- * @author MyEclipse Persistence Tools
- */
-
- public class BookDAO extends HibernateDaoSupport ...{
- private static final Log log = LogFactory.getLog(BookDAO.class);
- // property constants
- public static final String NAME = "name";
- public static final String ISBM = "isbm";
- public static final String AUTHOR = "author";
-
- protected void initDao() ...{
- // do nothing
- }
-
- public void save(Book transientInstance) ...{
- log.debug("saving Book instance");
- try ...{
- getHibernateTemplate().save(transientInstance);
- log.debug("save successful");
- } catch (RuntimeException re) ...{
- log.error("save failed", re);
- throw re;
- }
- }
-
- public void delete(Book persistentInstance) ...{
- log.debug("deleting Book instance");
- try ...{
- getHibernateTemplate().delete(persistentInstance);
- log.debug("delete successful");
- } catch (RuntimeException re) ...{
- log.error("delete failed", re);
- throw re;
- }
- }
-
- public Book findById(java.lang.Long id) ...{
- log.debug("getting Book instance with id: " + id);
- try ...{
- Book instance = (Book) getHibernateTemplate().get(
- "edu.jlu.fuliang.domain.Book", id);
- return instance;
- } catch (RuntimeException re) ...{
- log.error("get failed", re);
- throw re;
- }
- }
-
- public List findByExample(Book instance) ...{
- log.debug("finding Book instance by example");
- try ...{
- List results = getHibernateTemplate().findByExample(instance);
- log.debug("find by example successful, result size: "
- + results.size());
- return results;
- } catch (RuntimeException re) ...{
- log.error("find by example failed", re);
- throw re;
- }
- }
-
- public List findByProperty(String propertyName, Object value) ...{
- log.debug("finding Book instance with property: " + propertyName
- + ", value: " + value);
- try ...{
- String queryString = "from Book as model where model."
- + propertyName + "= ?";
- return getHibernateTemplate().find(queryString, value);
- } catch (RuntimeException re) ...{
- log.error("find by property name failed", re);
- throw re;
- }
- }
-
- public List findByName(Object name) ...{
- return findByProperty(NAME, name);
- }
-
- public List findByIsbm(Object isbm) ...{
- return findByProperty(ISBM, isbm);
- }
-
- public List findByAuthor(Object author) ...{
- return findByProperty(AUTHOR, author);
- }
-
- public List findAll() ...{
- log.debug("finding all Book instances");
- try ...{
- String queryString = "from Book";
- return getHibernateTemplate().find(queryString);
- } catch (RuntimeException re) ...{
- log.error("find all failed", re);
- throw re;
- }
- }
-
- public Book merge(Book detachedInstance) ...{
- log.debug("merging Book instance");
- try ...{
- Book result = (Book) getHibernateTemplate().merge(detachedInstance);
- log.debug("merge successful");
- return result;
- } catch (RuntimeException re) ...{
- log.error("merge failed", re);
- throw re;
- }
- }
-
- public void attachDirty(Book instance) ...{
- log.debug("attaching dirty Book instance");
- try ...{
- getHibernateTemplate().saveOrUpdate(instance);
- log.debug("attach successful");
- } catch (RuntimeException re) ...{
- log.error("attach failed", re);
- throw re;
- }
- }
-
- public void attachClean(Book instance) ...{
- log.debug("attaching clean Book instance");
- try ...{
- getHibernateTemplate().lock(instance, LockMode.NONE);
- log.debug("attach successful");
- } catch (RuntimeException re) ...{
- log.error("attach failed", re);
- throw re;
- }
- }
-
- public static BookDAO getFromApplicationContext(ApplicationContext ctx) ...{
- return (BookDAO) ctx.getBean("BookDAO");
- }
- }
Book.hbm.xml:
- <?xml version="1.0" encoding="utf-8"?>
- <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
- "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
- <!--
- Mapping file autogenerated by MyEclipse Persistence Tools
- -->
- <hibernate-mapping>
- <class name="edu.jlu.fuliang.domain.Book" table="BOOK" schema="CLASSICCARS">
- <id name="id" type="java.lang.Long">
- <column name="ID" />
- <generator class="identity" />
- </id>
- <property name="name" type="java.lang.String">
- <column name="NAME" length="20" not-null="true" />
- </property>
- <property name="isbm" type="java.lang.String">
- <column name="ISBM" length="20" not-null="true" unique="true" />
- </property>
- <property name="author" type="java.lang.String">
- <column name="AUTHOR" length="15" />
- </property>
- </class>
- </hibernate-mapping>
下面我们配置一下Spring,我们把applicationContext.xml分成了三个,分别是applicationContext-db.xml,applicationContext-dao.xml,applicationContext-service.我们看看如何配置:
applicationContext-db.xml:
- <?xml version="1.0" encoding="UTF-8"?>
- <beans
- xmlns="http://www.springframework.org/schema/beans"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
-
- <bean id="dataSource"
- class="org.apache.commons.dbcp.BasicDataSource">
- <property name="driverClassName"
- value="org.apache.derby.jdbc.ClientDriver">
- </property>
- <property name="url"
- value="jdbc:derby://localhost:1527/myeclipse;create=true">
- </property>
- <property name="username" value="classiccars"></property>
- <property name="password" value="myeclipse"></property>
- </bean>
- <bean id="sessionFactory"
- class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
- <property name="dataSource">
- <ref bean="dataSource" />
- </property>
- <property name="hibernateProperties">
- <props>
- <prop key="hibernate.dialect">
- org.hibernate.dialect.DerbyDialect
- </prop>
- <prop key="hibernate.show_sql">
- true
- </prop>
- </props>
- </property>
- <property name="mappingResources">
- <list>
- <value>edujlufuliangdomainBook.hbm.xml</value>
- </list>
- </property>
- </bean>
- </beans>
applicationContext-dao.xml:
- <?xml version="1.0" encoding="UTF-8"?>
- <beans
- xmlns="http://www.springframework.org/schema/beans"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
-
- <bean id="bookDAO" class="edu.jlu.fuliang.dao.BookDAO">
- <property name="sessionFactory">
- <ref bean="sessionFactory" />
- </property>
- </bean>
- </beans>
接下来我们来写我们的Service层:
edu.jlu.fuliang.service.BookManageService.java
- package edu.jlu.fuliang.service;
- import java.util.List;
-
- import edu.jlu.fuliang.domain.Book;
-
- public interface BookManageService {
- public List<Book> getAllBooks();
- public List<Book> getBookByName(String name);
- public void updateBook(Book book);
- public void addBook(Book book);
- public void deleteBook(long id);
- }
edu.jlu.fuliang.service.impl.BookManageServiceImpl.java:
- package edu.jlu.fuliang.serviceImpl;
-
- import java.util.List;
-
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
-
- import edu.jlu.fuliang.dao.BookDAO;
- import edu.jlu.fuliang.domain.Book;
- import edu.jlu.fuliang.service.BookManageService;
-
- public class BookManageServiceImpl implements BookManageService{
- private static final Log log = LogFactory.getLog(BookManageServiceImpl.class);
- private BookDAO bookDAO;
- @Override
- public void addBook(Book book) {
- bookDAO.save(book);
- }
-
- @Override
- public void deleteBook(long id) {
- Book book = bookDAO.findById(id);
- bookDAO.delete(book);
- }
-
- @Override
- public List<Book> getAllBooks() {
- return bookDAO.findAll();
- }
-
- @Override
- public List<Book> getBookByName(String name) {
- return bookDAO.findByName(name);
- }
-
- @Override
- public void updateBook(Book book) {
- log.info(book);
- bookDAO.attachDirty(book);
- }
-
- public BookDAO getBookDAO() {
- return bookDAO;
- }
-
- public void setBookDAO(BookDAO bookDAO) {
- this.bookDAO = bookDAO;
- }
- }
然后我们来配置Service和事务:
applicationContext-service.xml:
- <?xml version="1.0" encoding="UTF-8"?>
- <beans
- xmlns="http://www.springframework.org/schema/beans"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
-
- <bean id="bookManageServiceTarget" class="edu.jlu.fuliang.serviceImpl.BookManageServiceImpl">
- <property name="bookDAO">
- <ref bean="bookDAO"/>
- </property>
- </bean>
- <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
- <property name="sessionFactory" ref="sessionFactory"/>
- </bean>
- <bean id="bookManageService" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
- <property name="transactionManager" ref="transactionManager"/>
- <property name="target" ref="bookManageServiceTarget"/>
- <property name="transactionAttributes">
- <props>
- <prop key="add*">PROPAGATION_REQUIRED</prop>
- <prop key="delete*">PROPAGATION_REQUIRED</prop>
- <prop key="update*">PROPAGATION_REQUIRED</prop>
- <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
- </props>
- </property>
- </bean>
- </beans>
最后我们来把dwr整合进来:
我们在web.xml添加ContextLoaderListener来加载applicationContext-db.xml,applicationContext-dao.xm,applicationContext-service.xml,以及配置DwrServlet:
web.xml:
- <?xml version="1.0" encoding="UTF-8"?>
- <web-app version="2.4"
- xmlns="http://java.sun.com/xml/ns/j2ee"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
- http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
- <context-param>
- <param-name>contextConfigLocation</param-name>
- <param-value>classpath:applicationContext-*.xml</param-value>
- </context-param>
- <listener>
- <listener-class>
- org.springframework.web.context.ContextLoaderListener
- </listener-class>
- </listener>
- <servlet>
- <servlet-name>dwr-invoker</servlet-name>
- <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
- <init-param>
- <param-name>debug</param-name>
- <param-value>true</param-value>
- </init-param>
- </servlet>
- <servlet-mapping>
- <servlet-name>dwr-invoker</servlet-name>
- <url-pattern>/dwr/*</url-pattern>
- </servlet-mapping>
- </web-app>
在dwr.xml中配制bean的创建方式,类型转换,以及Service要暴露的接口:
- <dwr>
- <allow>
- <convert converter="bean" match="edu.jlu.fuliang.domain.Book"/>
- <create creator="spring" javascript="BookManageService" >
- <param name="beanName" value="bookManageService"/>
- <include method="getAllBooks"/>
- <include method="getBookByName"/>
- <include method="updateBook"/>
- <include method="addBook"/>
- <include method="deleteBook"/>
- </create>
- </allow>
- </dwr>
最后,我们编写jsp页面index.jsp:
- <html>
- <head><title>DWR test</title>
- <script type='text/javascript' src='/DWRTest/dwr/interface/BookManageService.js'></script>
- <script type='text/javascript' src='/DWRTest/dwr/engine.js'></script>
- <script type='text/javascript' src='/DWRTest/dwr/util.js'></script>
-
- <script type="text/javascript">
- var