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>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 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> 这样我们就完成了Spring+Hibernate+DWR的整合,我们可以在一个页面完成CURD操作了.
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