spring整合struts2

----------------------------------------------xml方式-------------------------------------------------------------

• 有spring整合hibernate的beans.xml文件(在src下)
• struts.xml(src下)

<?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>
 <!-- Action对象交给spring容器创建 -->
     <constant name="struts.objectFactory" value="spring"/>
   <package name="aa" namespace="/test" extends="struts-default">
     <action name="emp_*" class="empAction" method="{1}">
        <result name="list">/emplist.jsp</result>
        <result name="addUI">/addUI.jsp</result>
        <result type="redirectAction" name="success">emp_list</result>
     </action>
   </package>
 </struts>

• WEB-INF下的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <display-name>SSH</display-name>
    <!-- struts2的配置 -->
    <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>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
    <!-- spring的配置 -->
    <!-- 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:beans.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>
</web-app>

• **Action类

package cn.wyzc.action;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionContext;

import cn.wyzc.entity.Emp;
import cn.wyzc.service.EmpService;

@Controller   //控制类自动生成对象
public class EmpAction {
    private int id;
    private String name;
    private String pass;
    
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPass() {
        return pass;
    }
    public void setPass(String pass) {
        this.pass = pass;
    }
    @Resource
    private EmpService empService;
    public void setEmpService(EmpService empService) {
        this.empService = empService;
    }
    public String list(){
        List<Emp> emps = empService.findAll();
        ActionContext.getContext().put("emps", emps); 
        return "list";
    }
    public String addUI(){
        return "addUI";
    }
    public String add(){
        Emp emp = new Emp();
        emp.setId(id);
        emp.setName(name);
        emp.setPass(pass);
        empService.addEmp(emp);
        return "success";
    }
}

• jar包:spring的jar包 + struts2最少依赖jar包 + struts2-spring-plugin-2.1.8.jar + JSTL的jar包

 

注: 

1. <a href="/SSH/test/emp_list.action">查看</a>   <!--/项目名/空间名/actionName_方法名.action-->
2. 引用JSTL标签需要导入 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

3. ${} 和 foreach应用

4.  

   <c:forEach var="emp" items="${emps }">
   <tr>
   <td>${emp.id }</td>
   <td>${emp.name }</td>
   <td>${emp.pass }</td>
   </tr>
   </c:forEach>

   public String list(){
           List<Emp> emps = empService.findAll();
           ActionContext.getContext().put("emps", emps); 
           return "list";
       }

    

5. 表单中输入的值直接在类action中可以获取

<form action="/SSH/test/emp_add.action">
  ID:<input type="text" name="id"><br>
  Name:<input type="text" name="name"><br>
  Pass:<input type="text" name="pass"><br>
  <input type="submit" value="提交"><br>
</form>

@Controller
public class EmpAction {
    private int id;
    private String name;
    private String pass;
    //get&set省略
    @Resource
    private EmpService empService;
    //set省略
    public String add(){
        Emp emp = new Emp();
        emp.setId(id);
        emp.setName(name);
        emp.setPass(pass);
        empService.addEmp(emp);
        return "success";
    }
}

 ----------------------------------------------注解方式-------------------------------------------------------------

spring的xml中: xml配置方式基础上新增2个, 去掉所有类的bean配置,通过注解完成,util保留

<context:annotation-config></context:annotation-config>
<context:component-scan base-package="org.ssh_manage"></context:component-scan>

<util:map id="map" map-class="java.util.HashMap">
<entry key="teacherDao" value-ref="teacherDao"></entry>
<!-- 可以有n多个dao的bean -->
</util:map>

action类中:添加一个全局注解,每个方法添加一个@Action注解

@Controller
@ParentPackage(value="struts-default")
@Namespace(value="/app1")
@Results(value={
        @Result(name="welcome",location="/WEB-INF/welcome.jsp"),
        @Result(name="index",type="redirect",location="/index.jsp",params={"msgState","${msgState}"})
})
public class App1Action extends BasicAction {

      @Resource(name="service")
      private Service service;

      get/set(...)

    .....

    @Action(value="app1Action_fn1")
    public String fn1() {...}
}

struts.xml中为空:

<struts>

</struts>

 service类

@org.springframework.stereotype.Service
public class Service {
    
    @Resource(name="map")
    private Map<String, Dao> daoMap;

dao类

@Repository(value="teacherDao")
public class TeacherDao implements Dao{