struts2整合spring

1.项目整体结构

2.导入所需要的包

 需要注意的是,需要导入struts2-spring-plugin-xxxx.jar，否则会导致action中注入service不成功.NullPoint异常

3.JSP页面：

index.jsp

<s:form name="login" action="login" method="post" >          <s:textfield name="username" label="帐号"></s:textfield>          <s:password name="password"  label="密码"></s:password>          <s:submit></s:submit>      </s:form>  

loginSuccess.jsp

<div>              <h4>欢迎你!</h4><font color="red">${username}</font>              <br/>              <h4>你登录的密码是<h4><font color="red">${password}</font>;          </div>

passwordInvalid.jsp

<h1>密码错误</h1>

usernameInvalid.jsp

<h1>用户名错误</h1>

4..struts.xml配置

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"    "http://struts.apache.org/dtds/struts-2.0.dtd"><struts><package name="struts2" extends="struts-default">                <action name="login" class="cn.spring.action.LoginAction">                      <exception-mapping result="usernameInvalid" exception="cn.spring.exception.UsernameException" />            <exception-mapping result="passwordInvalid" exception="cn.spring.exception.PasswordException" />                        <result name="success">/loginSuccess.jsp</result>            <result name="input">/index.jsp</result>            <result name="usernameInvalid">/usernameInvalid.jsp</result>            <result name="passwordInvalid">/passwordInvalid.jsp</result>                </action>        </package></struts>

5.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.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">                <bean id="loginService" class="cn.spring.service.LoginService" />        <!-- action 中注入service -->    <bean id="loginAction" class="cn.spring.action.LoginAction">        <property name="loginService" ref="loginService"/>    </bean>        </beans>

6.web.xml

  <!-- 配置Spring的核心监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>  <!-- 全局参数,默认加载web-inf目录下的配置文件(applicationContext.xml)，在此处进行修改 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param>     <!-- 配置struts2的核心过滤器 -->  <filter>  <filter-name>struts2</filter-name><!-- 上下名字一致 -->  <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>  </filter>    <filter-mapping>  <filter-name>struts2</filter-name>  <url-pattern>/*</url-pattern>  <!-- 拦截请求和转发 -->  <dispatcher>REQUEST</dispatcher>  <dispatcher>FORWARD</dispatcher>  </filter-mapping>

7.LoginService

package cn.spring.service;import cn.spring.exception.PasswordException;import cn.spring.exception.UsernameException;public class LoginService { /*     * 我们这只是一个小的例子，不与数据库打交到     * 若有数据库操作，那么在这个LoginService就是操作具体Dao类实现登录的相关操作     */    public boolean validate(String username,String password)throws Exception{        boolean v = false;        if(!"xcp".equals(username)){//如果用户名不等于xcp，就抛出一个异常            throw new UsernameException("用户名不正确");        }        else if(!"123".equals(password)){//如果密码不等于123，就抛出一个异常            throw new PasswordException("密码不正确");        }        else{            v = true;                    }        return v;    }}

8.LoginAction

package cn.spring.action;import cn.spring.service.LoginService;import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport{private static final long serialVersionUID = 1L;    private String username;    private String password;        /*     * 我们通过Spring的IOC容器注入LoginService，从而减少类之间的依赖关系     */    private LoginService loginService;public void setLoginService(LoginService loginService) {this.loginService = loginService;}public String getUsername(){        return username;    }    public void setUsername(String username){        this.username = username;    }    public String getPassword(){        return password;    }    public void setPassword(String password){        this.password = password;    }            /*@Override    public void validate()    {                 * 我们可以在这个方法类加一些输入验证 但是为了体现后面我们写的业务逻辑方法这就不验证             }*/        public String execute() throws Exception{    System.out.println("............."+username+",..."+this.password) ;        boolean result = loginService.validate(username, password);                System.out.println("..."+result+"...");                if(result == true){            return SUCCESS;        }        else{            return INPUT;        }    }}

9.UsernameException

package cn.spring.exception;public class UsernameException extends Exception{private static final long serialVersionUID = 1L;public UsernameException(){};public UsernameException(String message){super(message);}}

10.PasswordException

package cn.spring.exception;public class PasswordException extends Exception{private static final long serialVersionUID = 1L;public PasswordException(){}public PasswordException(String message){super(message);}}

测试:

http://localhost:8080/Struts2_Spring/index.jsp