spring3整合struts2实例

注：spring的作用就是实例化bean，整合struts实际上就是使用spring管理action类的过程。

1、导入jar包

导入struts和spring的jar，struts还需要一个struts2-spring-plugin-2.3.4.1.jar。

2、web.xml

需要配置struts和spring。

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 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>spring_struts2</display-name>
  <!-- 指定spring的配置文件，默认从web根目录寻找配置文件，我们可以通过spring提供的classpath:前缀指定从类路径下寻找 -->
	<context-param>
	   <param-name>contextConfigLocation</param-name>
	   <param-value>classpath:applicationContext.xml</param-value>
	</context-param>
	<!-- 对Spring容器进行实例化 -->
	<listener>
	      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<!-- 配置sturts2 -->
  <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>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

3、struts.xml

action的class不是bean类本身，而是spring的bean的id名称

<?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>
    <constant name="struts.enable.DynamicMethodInvocation" value="false" />
    <constant name="struts.devMode" value="true" />

    <package name="ru" namespace="/" extends="struts-default">

        <default-action-ref name="index" />

        <global-results>
            <result name="error">/error.jsp</result>
        </global-results>
         <action name="login" class="loginaction">
            <result name="sucess">
               /jsp/logsucess.jsp
            </result>
             <result name="error">
               /jsp/logerror.jsp
            </result>
        </action>
    </package>
</struts>

4、LoginAction.java（action类）

里面的对象属性由spring负责实例化。

package com.ru.action;

import com.opensymphony.xwork2.ActionSupport;
import com.ru.service.UserCheck;

public class LoginAction extends ActionSupport {
	
	private String username;
	private String password;
	private UserCheck uc;
	
	
		public void setUc(UserCheck uc) {
		this.uc = uc;
	}	

	public void setUsername(String username) {
		this.username = username;
	}
	public void setPassword(String password) {
		this.password = password;
	}

		@Override
		public String execute() throws Exception {
			
			if(uc.result(username, password)=="sucess"){
				return "sucess";
			}else{
				return "error";
			}
			
		}
}

5、UserCheck.java（这个是业务逻辑层的判断代码）

package com.ru.service;

public class UserCheck {
	public String result(String username,String password){
		if("ru".equals(username)&&"123".equals(password)){
			return "sucess";
		}else{
			return "error";
		}
	}
}

6、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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

  <!-- services -->
	<!-- 配置一个业务逻辑bean -->
    <bean id="usercheck" class="com.ru.service.UserCheck"/>
	<!-- 配置一个action -->	
	<bean id="loginaction" class="com.ru.action.LoginAction">
		<property name="uc" ref="usercheck"/>
	</bean>
</beans>

7、login.jsp

注意的是：action实现的是重定向，说以需要完整访问路径，这里使用<base href="<%=basePath%>">，获取完整路径

[html] view plain copy

1. <%@pagelanguage="java"contentType="text/html;charset=UTF-8"
2. pageEncoding="UTF-8"%>
3. <%@tagliburi="/struts-tags"prefix="s"%>
4. <%
5. Stringpath=request.getContextPath();
6. StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
7. %>
8. <!DOCTYPEhtmlPUBLIC"-//W3C//DTDHTML4.01Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
9. <html>
10. <head>
11. <basehref="<%=basePath%>">
12. <metahttp-equiv="Content-Type"content="text/html;charset=UTF-8">
13. <title>Inserttitlehere</title>
14. </head>
15. <body>
16. <!--使用struts标签创建一个表单-->
17. <s:formaction="login"method="post">
18. <s:textfieldkey="用户名"name="username"></s:textfield>
19. <s:passwordkey="密　码"name="password"></s:password>
20. <s:submitvalue="登录"></s:submit>
21. </s:form>
22. </body>
23. </html>