Struts2 + Spring + Hibernate整合。
使用的是无配置方法进行SSH的整合，struts-convertion plugin + spring annotation + hibernate annotation方式，无配置快速开发。
示例
项目结构：
src源码结构：
WEB-INF\lib目录需要加入的jar包有：
1、将struts.xml加入到src目录当中：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd"> <struts>
<!-- 使用Spring整合Struts -->
<constant name="struts.objectFactory" value="spring" />
<!-- 把它设置为开发模式，发布时要设置为false -->
<constant name="struts.devMode" value="true" />
<!-- 设置在class被修改时是否热加载，发布时要设置为false -->
<constant name="struts.convention.classes.reload" value="true"/>
<!-- 自动动态方法的调用，使用这个设置后可以这样调用：action!method -->
<constant name="struts.enable.DynamicMethodInvocation" value="true" />
<!-- 指定jsp文件所在的目录地址 -->
<constant name="struts.convention.result.path" value="/WEB-INF/content/" />
<!-- 使用struts-default默认的转换器，如果是rest的使用：rest-default，rest需要rest的jar插件 -->
<constant name="struts.convention.default.parent.package" value="struts-default"/>
<!-- 用于配置包名后缀。默认为action、actions、struts-->
<constant name="struts.convention.package.locators" value="actions" />
<!-- 用于配置类名后缀，默认为Action，设置后，Struts2只会去找这种后缀名的类做映射 -->
<constant name="struts.convention.action.suffix" value="Action"/>
<!-- 设置即使没有@Action注释，依然创建Action映射。默认值是false。因为Convention-Plugin是约定优于配置的风格，
可以不通过注解根据预先的定义就能访问相应Action中的方法 -->
<constant name="struts.convention.action.mapAllMatches" value="true"/>
<!-- 自定义jsp文件命名的分隔符 -->
<constant name="struts.convention.action.name.separator" value="-" />
<!-- 国际化资源文件名称 -->
<constant name="struts.custom.i18n.resources" value="i18n" />
<!-- 是否自动加载国际化资源文件 -->
<constant name="struts.i18n.reload" value="true" />
<!-- 浏览器是否缓存静态内容 -->
<constant name="struts.serve.static.browserCache" value="false" />
<!-- 上传文件大小限制设置 -->
<constant name="struts.multipart.maxSize" value="-1" />
<!-- 主题，将值设置为simple，即不使用UI模板。这将不会生成额外的html标签 -->
<constant name="struts.ui.theme" value="simple" />
<!-- 编码格式 -->
<constant name="struts.i18n.encoding" value="UTF-8" /> </struts>
使用SSH的struts.xml配置关键的一步是加入这一句：
<constant name="struts.objectFactory" value="spring" />
这里使用的是struts的convention插件，这样不需要手动写struts的配置。
2、在WEB-INF目录下新增一个xml：applicationContext.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"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://127.0.0.1/test" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan">
<list>
<value>com.my.dao.impl</value>
</list>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
hibernate.hbm2ddl.auto=update
hibernate.show_sql=true
hibernate.format_sql=false
hibernate.cache.use_second_level_cache=true
hibernate.cache.use_query_cache=false
hibernate.cache.provider_class=org.hibernate.cache.internal.NoCacheProvider
hibernate.current_session_context_class= org.springframework.orm.hibernate4.SpringSessionContext
</value>
</property>
</bean>
<bean id="txManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean> <context:component-scan base-package="com.my" /> <tx:annotation-driven transaction-manager="txManager" />
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="*" read-only="true"/>
<tx:method name="add*" propagation="REQUIRED" rollback-for="Exception"/>
<tx:method name="create*" propagation="REQUIRED" rollback-for="Exception"/>
<tx:method name="insert*" propagation="REQUIRED" rollback-for="Exception"/>
<tx:method name="update*" propagation="REQUIRED" rollback-for="Exception"/>
<tx:method name="delete*" propagation="REQUIRED" rollback-for="Exception"/>
<tx:method name="remove*" propagation="REQUIRED" rollback-for="Exception"/>
</tx:attributes>
</tx:advice> <aop:config>
<aop:pointcut id="allServiceMethods" expression="execution(* com.my.service.*.*(..))"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="allServiceMethods"/>
</aop:config> </beans>
这个spring的xml配置主要是设置spring与hibernate的关联。
3、web.xml设置
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>TestStrutsSpringHibernate</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list> <!-- 使用ContextLoaderListener初始化Spring容器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 定义Struts 2的FilterDispathcer的Filter -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<!-- FilterDispatcher用来初始化Struts 2并且处理所有的WEB请求。 -->
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
<dispatcher>ERROR</dispatcher>
</filter-mapping>
</web-app>
在filter-mapping中有四个dispatcher，这是用于jsp的内容转发使用的。
4、/index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Index</title>
</head>
<body>
<jsp:forward page="user"></jsp:forward>
</body>
</html>
注意上面的<jsp:forward />，如果第3步中没有设置filter-mapping的<dispatcher>FORWARD</dispatcher>，那这里功能会失效抛异常。
5、源码
package：com.my.dao
下面有两个类：DaoSupport（抽象DAO主类）和UserDao（接口）
package com.my.dao; import javax.annotation.Resource; import org.hibernate.SessionFactory;
import org.springframework.stereotype.Repository; @Repository
public abstract class DaoSupport {
@Resource
private SessionFactory sessionFactory; public SessionFactory getSessionFactory() {
return sessionFactory;
} public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
}
package com.my.dao;
import java.util.List;
import com.my.dao.bean.User;
public interface UserDao {
/*
* get all users
*/
public List<User> findUsers();
}
以及对应的DAO bean：
package com.my.dao.bean;
public class User {
public long id;
public String name;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
UserDao接口的实现类：（实现接口和继承DAO主抽象类）
package com.my.dao.impl; import java.util.ArrayList;
import java.util.List; import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Repository; import com.my.dao.DaoSupport;
import com.my.dao.UserDao;
import com.my.dao.bean.User; @Repository(value = "userDao")
public class UserDaoImpl extends DaoSupport implements UserDao {
/*
* get all users
*/
@SuppressWarnings("unchecked")
public List<User> findUsers() {
List<User> joUsers = new ArrayList<User>();
try {
Session session = super.getSessionFactory().getCurrentSession();
Query query = session.createQuery("FROM User");
List<com.my.dao.impl.bean.User> poUsers = query.list();
for (com.my.dao.impl.bean.User user : poUsers) {
User u = new User();
BeanUtils.copyProperties(user, u);
joUsers.add(u);
}
} catch (Exception e) {
e.printStackTrace();
}
return joUsers;
}
}
DAO中对应数据库的persistent object:（hibernate的ORM映射关系对象）
package com.my.dao.impl.bean; import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table; @Entity
@Table(name="user")
public class User {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
public long id; @Column(name="name", length=200, nullable=false)
public String name; public long getId() {
return id;
} public void setId(long id) {
this.id = id;
} public String getName() {
return name;
} public void setName(String name) {
this.name = name;
}
}
pacakge:com.my.service
下面有两个类：ServiceSupport（抽象Service主类）和UserService（接口）
package com.my.service;
public abstract class ServiceSupport {
}
package com.my.service;
import java.util.List;
import com.my.service.bean.User;
public interface UserService {
/*
* get all users
*/
public List<User> findUsers();
}
Service Bean（BO）
package com.my.service.bean;
public class User {
public long id;
public String name;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Service接口的实现类：UserServiceImpl，实现ServiceSupport抽象主类和UserService接口
package com.my.service.impl; import java.util.ArrayList;
import java.util.List; import javax.annotation.Resource; import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service; import com.my.dao.UserDao;
import com.my.service.ServiceSupport;
import com.my.service.UserService;
import com.my.service.bean.User; @Service(value="userService")
public class UserServiceImpl extends ServiceSupport implements UserService {
@Resource(name="userDao")
private UserDao userDao; public UserDao getUserDao() {
return userDao;
} public void setUserDao(UserDao userDao) {
this.userDao = userDao;
} /*
* get all users
*/
public List<User> findUsers(){
List<User> boUsers = new ArrayList<User>();
List<com.my.dao.bean.User> poUsers = userDao.findUsers();
for(com.my.dao.bean.User user : poUsers){
User u = new User();
BeanUtils.copyProperties(user, u);
boUsers.add(u);
}
return boUsers;
}
}
package:com.my.actions
action的基类，继承说struts2的ActionSupport类：
package com.my.actions;
import com.opensymphony.xwork2.ActionSupport;
@SuppressWarnings("serial")
public abstract class BaseActionSupport extends ActionSupport {
}
UserAction，继承说BaseActionSupport基类：
package com.my.actions; import java.util.List; import javax.annotation.Resource; import org.apache.struts2.ServletActionContext;
import org.springframework.stereotype.Controller; import com.my.service.UserService;
import com.my.service.bean.User; @Controller
@SuppressWarnings("serial")
public class UserAction extends BaseActionSupport {
@Resource(name="userService")
private UserService userService; public UserService getUserService() {
return userService;
} public void setUserService(UserService userService) {
this.userService = userService;
} @Override
public String execute() throws Exception {
List<User> users = userService.findUsers();
ServletActionContext.getRequest().setAttribute("users", users);
return SUCCESS;
}
}
6、加入action对应的jsp：
路径：WEB-INF\content\user.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
Total users: ${users.size()}<br/>
<table cellpadding="1" border="1px">
<tr>
<th>User id</th>
<th>User name</th>
</tr>
<s:iterator id="users" value="#request.users">
<tr>
<td><s:property value="id"/></td>
<td><s:property value="name"/></td>
</tr>
</s:iterator>
</table>
</body>
</html>
7、运行结果：
