首先，建一個web project,然后添加對hibernate和spring的支持，我們使用的是hibernate3.1和spring2.0,然后導入dwr.jar和commons-pool-1.3.jar(不知道myeclipse怎么搞的，添加Spring功能支持的時候就有了commons-dbcp.jar，居然沒有其依賴的commons-pool-x.jar，只好單獨添加了，另外，需要將Spring2.0 AOP Liberaries里的asm2.2.3.jar刪除，因為好像和Hiberate中的生成代理用的asm.jar沖突，我把Spring2.0 AOP Liberaries排到最后仍然有沖突，所以只好刪掉了，不知道大家遇到過這種情況么)。我們使用myeclise自帶的Derby數據庫，在里面建一個表BOOK：
ID bigint primary key,autoincrement
NAME varchar(20)
ISBM varchar(20)
AUTHOR varchar(15)
然后利用myeclipse的hibernate反向工程生成領域模型：Book.java, DAO:BookDAO.jar, Book 的映射文件Book.hbm.xml：
生成的代碼及配置文件如下:
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> 下面我們配置一下Spring，我們把applicationContext.xml分成了三個，分別是applicationContext-db.xml,applicationContext-dao.xml,applicationContext-service.我們看看如何配置：
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>edu/jlu/fuliang/domain/Book.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> 接下來我們來寫我們的Service層：
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;
????}
} 然后我們來配置Service和事務:
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> 最后我們來把dwr整合進來:
我們在web.xml添加ContextLoaderListener來加載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的創建方式,類型轉換,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,我們編寫jsp頁面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?bookCache?=?{};
????????var?currentBook?=?null;
????????
????????function?loadAllBooks(){
????????????BookManageService.getAllBooks(handleGetAllBooks,handleGetAllBooksError);
????????}
????????function?handleGetAllBooks(books){
????????????dwr.util.removeAllRows("booksBody",{?filter:function(tr)?{
??????return?(tr.id?!=?"pattern");
??????}});
????????????var?book,id;
????????????for(var?i?=?0;?i?<?books.length;?i++){
????????????????book?=?books[i];
????????????????id?=?book.id;
????????????
????????????????dwr.util.cloneNode("pattern",?{?idSuffix:id?});
????????????????dwr.util.setValue("t_name"?+?id,?book.name);
????????????????dwr.util.setValue("t_isbm"?+?id,?book.isbm);
????????????????dwr.util.setValue("t_author"?+?id,book.author);
???????????????$("pattern"?+?id).style.display?=?"block";
???????????????bookCache[id]?=?book;
????????????}
????????}
????????function?handleGetAllBooksError(msg){
????????????alert("Error:?"?+?msg);
????????}
????????
????????function?addBook(){
????????????var?book?=?{name:null,isbm:null,author:null};
????????????dwr.util.getValues(book);
????????????dwr.engine.beginBatch();
?????????????????BookManageService.addBook(book);
?????????????????loadAllBooks();
??????????????dwr.engine.endBatch();
????????}
????????
????????function?editBook(btId){
????????????currentBook?=?bookCache[btId.substring(4)];
????????????dwr.util.setValues(currentBook);
????????}
????????
????????function?updateBook(){
????????????var?book?=?{id:null,name:null,isbm:null,author:null};?
????????????dwr.util.getValues(book);
????????????book.id?=?currentBook.id;
????????????BookManageService.updateBook(book,handleUpdateBook,handleUpdateBookError);
????????}
????????
????????function?handleUpdateBook(){
????????????alert("Update?book?successfully!");
????????????loadAllBooks();
????????}
????????
????????function?handleUpdateBookError(msg){
????????????alert("Error:?"?+?msg);
????????}
????????
????????function?deleteBook(btId){
????????????var?i?=?confirm("Are?you?sure?to?delete?the?book?");
????????????if(i?==?true)
????????????????BookManageService.deleteBook(btId.substring(6),handleDeleteBook,handleDeleteBookError);
????????}
????????
????????function?handleDeleteBook(){
??????????alert("The?book?has?been?delete?successfully!");
??????????loadAllBooks();
????????}
????????
????????function?handleDeleteBookError(msg){
??????????alert("Error:?"?+?msg);
????????}
????</script>
</head>
<body?onload="loadAllBooks()">
????<div>
????????<h2>Add?book</h2>
????????<table>
????????????<tr>
??????????????<td>Name:</td><td><input?type="text"?id="name"></td>
????????????</tr>
????????????<tr>
??????????????<td>ISBN:</td>
??????????????<td><input?type="text"?id="isbm"></td>
?????????????</tr>
????????????
????????????<tr>
???????????????<td>Author:</td>
???????????????<td><input?type="text"?id="author"></td>
???????????</tr>
???????????<tr>
???????????????<td?colspan="2">
?????????????????<input?type="button"?id="add"?value="Add"?onclick="addBook()">
?????????????????<input?type="button"?id="update"?value="Update"?onclick="updateBook()">
???????????????</td>
???????????</tr>
???????</table>
????</div>
????<hr>
????<div?id="list">
????????<table?border="1">
??????????<thead>
??????????????<tr>
??????????????????<th>Name</th>
??????????????????<th>ISBN</th>
??????????????????<th>Author</th>
??????????????????<th>Action</th>
??????????????</tr>
??????????</thead>
??????????<tbody?id="booksBody">
??????????????<tr?id="pattern"?style="display:none;">
??????????????????<td>
????????????????????<span?id="t_name"></span>
??????????????????</td>
??????????????????<td>
????????????????????<span?id="t_isbm"></span>
??????????????????</td>
??????????????????<td>
????????????????????<span?id="t_author"></span>
??????????????????</td>
??????????????????<td>
????????????????????<span?id="action">
????????????????????????<input?id="edit"?type="button"?value="Edit"?onclick="editBook(this.id)"/>
??????????????????????<input?id="delete"?type="button"?value="Delete"?onclick="deleteBook(this.id)"/>
????????????????????</span>
??????????????????</td>
??????????????</tr>
??????????</tbody>
????????</table>
????</div>
</body> 這樣我們就完成了Spring+Hibernate+DWR的整合,我們可以在一個頁面完成CURD操作了.
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