SSH 最容易的例子

SSH 最简单的例子
在MyEclipse 8.6环境使用 Spring3 Struts2 Hibernate3建立一个最简单的SSH工程

Mysql测试表

CREATE TABLE `person` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `firstName` varchar(45) DEFAULT NULL,
  `lastName` varchar(45) DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `id` (`id`)
)

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>

	<!-- 指定Spring配置文件   -->
	<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>

	<!-- Hibernate3配置 -->
	<filter>
		<filter-name>Spring OpenSessionInViewFilter</filter-name>
		<filter-class>
			org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
	</filter>

	<filter-mapping>
		<filter-name>Spring OpenSessionInViewFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<!-- struts2配置 -->
	<filter>
		<filter-name>struts2</filter-name>
		<filter-class>
			org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>struts2</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
</web-app>

Spring3的applicationContext.xml 配置定义

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
	http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
	">

	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName" value="com.mysql.jdbc.Driver">
		</property>
		<property name="url" value="jdbc:mysql:///test"></property>
		<property name="username" value="root"></property>
		<property name="password" value="root"></property>
	</bean>

	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
		<property name="dataSource">
			<ref bean="dataSource" />
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQLDialect
				</prop>
			</props>
		</property>
		<property name="annotatedClasses">
			<list>
				<value>study.db.Person</value>
			</list>
		</property>
	</bean>

	<!-- AOP配置 -->
	<aop:config proxy-target-class="true">
		<aop:pointcut id="managerOperation" expression="execution(* study..*DAO.*(..))" />
		<aop:advisor advice-ref="txAdvice" pointcut-ref="managerOperation" />
	</aop:config>
	<!-- 基本事务定义 -->
	<tx:advice id="txAdvice" transaction-manager="txManager">
		<tx:attributes>
			<tx:method name="save*" />
			<tx:method name="update*" />
			<tx:method name="remove*" />
			<tx:method name="delete*" />
			<tx:method name="create*" />
			<!-- other methods are set to read only -->
			<tx:method name="*" read-only="true" />
		</tx:attributes>
	</tx:advice>

	<bean id="txManager"
		class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory"></property>
	</bean>

	<!-- struts2使用的action -->
	<bean id="personAction" scope="prototype" class="study.web.action.PersonAction">
		<constructor-arg ref="PersonDAO" />
	</bean>

	<!-- hibernate的数据库DAO -->
	<bean id="PersonDAO" class="study.db.PersonDAO">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>
</beans>

struts.xml 配置定义

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
	<constant name="struts.objectFactory" value="spring" />
	<constant name="struts.devMode" value="true" />

	<package name="person" extends="struts-default">

		<!-- personAction定义在spring中 -->
		<action name="list" class="personAction" method="execute">
			<result>pages/list.jsp</result>
			<result name="input">pages/list.jsp</result>
		</action>

		<action name="remove" class="personAction" method="remove">
			<result>pages/list.jsp</result>
			<result name="input">pages/list.jsp</result>
		</action>

		<action name="save" class="personAction" method="save">
			<result>pages/list.jsp</result>
			<result name="input">pages/list.jsp</result>
		</action>
	</package>

</struts>    

PersonAction.java 源程序

package study.web.action;

import java.util.List;

import study.db.Person;
import study.db.PersonDAO;

import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.Preparable;

public class PersonAction implements Preparable {
	private PersonDAO service;
	private List<Person> persons;
	private Person person;
	private Integer id;

	public PersonAction(PersonDAO service) {
		this.service = service;
	}

	@SuppressWarnings("unchecked")
	public String execute() {
		this.persons = service.findAll();
		return Action.SUCCESS;
	}

	public String save() {
		this.service.save(person);
		this.person = new Person();
		return execute();
	}

	public String remove() {
		// service.remove(id);
		return execute();
	}

	public List<Person> getPersons() {
		return persons;
	}

	public Integer getId() {
		return id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public void prepare() throws Exception {
		if (id != null)
			person = service.findById(id);
	}

	public Person getPerson() {
		return person;
	}

	public void setPerson(Person person) {
		this.person = person;
	}
}

JSP网页表单调用Struts2中的action
register.jsp

<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
	<head>

	</head>
	<body>
 		<div style="width: 300px; border-style: solid">
			<p>
				Person Data
			</p>
			<s:form action="save"  >
				<s:textfield id="id" name="person.id" />
				<s:textfield id="firstName" label="First Name"	name="person.firstName" />
				<s:textfield id="lastName" label="Last Name" name="person.lastName" />
 				<s:submit />
			</s:form>
		</div>
	</body>
</html>

list.jsp页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>

<p>
	Persons
</p>
<s:if test="persons.size > 0">
	<table>
		<s:iterator value="persons">
			<tr id="row_<s:property value="id"/>">
				<td>
					<s:property value="firstName" />
				</td>
				<td>
					<s:property value="lastName" />
				</td>
				<td>
					<s:url id="removeUrl" action="remove">
						<s:param name="id" value="id" />
					</s:url>
					<s:a href="%{removeUrl}">Remove</s:a>
					<s:a id="a_%{id}">Edit</s:a>
				</td>
			</tr>
		</s:iterator>
	</table>
</s:if>

Spring3整合Hibernate3时如果出现的org/objectweb/asm/Type异常
原因是Spring中的cglib-nodep-2.1.3.jar与Hibernate中的cglib-2.2.jar相冲突!
两种框架整合时Spring中的cglib-nodep-2.1.3.jar是必须的,取消Hibernate中的cglib-2.2.jar即可