spring與dwr,hibernate整合開發

一． 首先準備以下包：

Dwr應用包： dwr.jar

Spring應用的所有包（注意版本，自行選擇）

Hibernate應用的所有包（注意版本，自行選擇）

二． 以聲明的方式建立ApplicationContext執行個體

在web.xml檔案中加入以下：

<!--  spring  -->	
<!--  以聲明的方式建立ApplicationContext執行個體  -->	
	<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>
           

三． 在web.xml中配置dwr

在web.xml檔案中加入以下：

<!--   dwr配置  -->	
	<servlet>
		<servlet-name>dwr</servlet-name>
		<servlet-class>
			org.directwebremoting.servlet.DwrServlet
		</servlet-class>
		<init-param>
			<param-name>debug</param-name>
			<param-value>true</param-value>
		</init-param>
		<init-param>
			<param-name>crossDomainSessionSecurity</param-name>
			<param-value>false</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>dwr</servlet-name>
		<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
           

四． 在Spring的application context中建立 SessionFactory

在applicationContext.xml檔案中加入以下：

<bean id="dataSource"
		class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName"
			value="com.mysql.jdbc.Driver">
		</property>
		<property name="url"
			value="jdbc:mysql://localhost:3306/dwr_s_h">
		</property>
		<property name="username" value="name"></property>
		<property name="password" value="password"></property>
	</bean>
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource">
			<ref bean="dataSource"></ref>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQLDialect
				</prop>
				<prop key="statement_cache.size">25</prop>
				<prop key="jdbc.fetch_size">50</prop>
				<prop key="jdbc.batch_size">25</prop>
				<prop key="hibernate.use_outer_join">false</prop>
				<prop key="jdbc.use_scrollable_resultset">true</prop>
				<prop key="hibernate.query.factory_class">
					org.hibernate.hql.classic.ClassicQueryTranslatorFactory
				</prop>
				<prop key="hibernate.show_sql">true</prop>
			</props>
		</property>
		<property name="mappingResources">
			<list>
				<value>com/model/Department.hbm.xml</value>
			</list>
		</property>
		</bean>
           

注意：我在com.model包中建立了一個最簡單的部門類Department.java:

package com.model;
public class Department {
	private int did;
	private String dname;
	public int getDid() {
		return did;
	}
	public void setDid(int did) {
		this.did = did;
	}
	public String getDname() {
		return dname;
	}
	public void setDname(String dname) {
		this.dname = dname;
	}
}
           

和與其對應的映射檔案Department.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">
<hibernate-mapping>
    <class name="com.model.Department" table="DEPARTMENT">
        <id name="did" type="java.lang.Integer">
        	<column name="DID" />
            <generator class="native"/>
        </id>
        <property name="dname" type="java.lang.String">
            <column name="DNAME" />
        </property>
    </class>
</hibernate-mapping>
           

五． 在Spring中注入相關屬性

<!-- 注入sessionFactory-->
		<bean id="department" class="com.dao.DepartmentImpl">
			<property name="sessionFactory">
				<ref bean="sessionFactory"></ref>
			</property>
		</bean>
		<!-- 注入department至dwr.xml的bean引用的dao屬性-->
		<bean id="DepartmentDwr" class="com.dwr.DepartmentDwr">
			<property name="dao">
				<ref bean="department"></ref>
			</property>
		</bean>
           

六． 配置dwr檔案

在dwr.xml檔案中配置如下：

<?xml version="1.0" encoding="UTF-8"?>
<dwr>
	<allow>
	<!--前台頁面将引用EmployeeDwr，将bean生成方式設定為spring生成 -->
		<create creator="spring" javascript="DepartmentDwr" >
		  <param name="beanName" value="DepartmentDwr"/>
		</create>
		<!—配置轉換器 -->
		<convert match="com.model.*"  converter="bean"/>
	</allow>
</dwr>
           

七． 在前台頁面簡單測試下，調用如下：

<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<html><%
String root = request.getContextPath();
%>
 <head>
<script type='text/javascript' src='<%=root%>/dwr/interface/DepartmentDwr.js'></script>
<script type='text/javascript' src='<%=root%>/dwr/engine.js'></script>
<script type='text/javascript' src='<%=root%>/dwr/util.js'></script>
<script type="text/javascript">
	//部門下拉清單
 	function department(){
 	var department = document.getElementById("departmentElem");
 		DepartmentDwr.show_department(function(data){
 			for(var i=0; i<data.length; i++){	
						var oOption = document.createElement("option");
						oOption.value=data[i].did;
						oOption.text=data[i].dname;
						department.options.add(oOption);
					}
 		});

 	}
 	function chk(obj){
 		alert("目前值:"+obj.value);
 	}
</script>
</head>

  <body onload="department();">
  	<select id="departmentElem" onchange="chk(this);">
  		<option value="0">--未選擇--</option>
  	</select>
  </body>
</html>
           

完結