Struts2 json plugin实战3 - JSON RPC

1. 首先是在struts2的工程里添加struts2-json-plugin.xxx.jar库，如果是使用的maven，添加以下dependency

<textarea cols="50" rows="15" name="code" class="xhtml"> &lt;dependency&gt; &lt;groupId&gt;org.apache.struts&lt;/groupId&gt; &lt;artifactId&gt;struts2-json-plugin&lt;/artifactId&gt; &lt;version&gt;2.1.8.1&lt;/version&gt; &lt;/dependency&gt;</textarea> 

 

2. 创建Action类和一个用到的User类

Action类内容

<textarea cols="50" rows="15" name="code" class="java"> import com.opensymphony.xwork2.Action; import java.util.ArrayList; import java.util.List; import org.apache.struts2.json.annotations.SMDMethod; public class JSONExample3 { private List&lt;User&gt; userList = new ArrayList&lt;User&gt;(); public String execute() { return Action.SUCCESS; } @SMDMethod public List&lt;User&gt; getMyUserList(int size) { for (int i = 0; i &lt; size; i++) { User user = new User("id_" + i, "username_" + i, "password_" + i, "desc_" + i); userList.add(user); } return userList; } public List&lt;User&gt; getUserList() { return userList; } public void setUserList(List&lt;User&gt; userList) { this.userList = userList; } }</textarea> 

 

User类内容

<textarea cols="50" rows="15" name="code" class="java">import java.io.Serializable; public class User implements Serializable { private static final long serialVersionUID = 1L; private String id; private String username; private String password; private String description; public User() { } public User(String id, String username, String password, String description) { this.id = id; this.username = username; this.password = password; this.description = description; } public String getId() { return id; } public void setId(String id) { this.id = id; } 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; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } } </textarea> 

 

3. Spring配置文件

<textarea cols="50" rows="15" name="code" class="xhtml">&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:lang="http://www.springframework.org/schema/lang" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.0.xsd" default-lazy-init="true"&gt; &lt;bean id="jsonExample3" class="JSONExample3" scope="prototype"/&gt; &lt;/beans&gt;</textarea> 

 

4. Struts2配置文件

<textarea cols="50" rows="15" name="code" class="xhtml">&lt;?xml version="1.0" encoding="UTF-8" ?&gt; &lt;!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"&gt; &lt;struts&gt; &lt;include file="struts-default.xml" /&gt; &lt;package name="json" namespace="/json" extends="struts-default" &gt; &lt;result-types&gt; &lt;result-type name="json" class="org.apache.struts2.json.JSONResult"/&gt; &lt;/result-types&gt; &lt;interceptors&gt; &lt;interceptor name="json" class="org.apache.struts2.json.JSONInterceptor"/&gt; &lt;/interceptors&gt; &lt;action name="smdAction" class="jsonExample3"&gt; &lt;interceptor-ref name="json"&gt; &lt;param name="enableSMD"&gt;true&lt;/param&gt; &lt;/interceptor-ref&gt; &lt;result type="json"&gt; &lt;param name="enableSMD"&gt;true&lt;/param&gt; &lt;/result&gt; &lt;/action&gt; &lt;/package&gt; &lt;/struts&gt;</textarea> 

 

5. 新建一个jsp文件json.jsp用来做测试

<textarea cols="50" rows="15" name="code" class="xhtml">&lt;html&gt; &lt;head&gt; &lt;title&gt;&lt;/title&gt; &lt;mce:script type="text/javascript" src="http://www.google.com/jsapi?key=helloworld" mce_src="http://www.google.com/jsapi?key=helloworld"&gt;&lt;/mce:script&gt; &lt;mce:script type="text/javascript"&gt;&lt;!-- google.load("jquery", "1.4.1"); google.load("dojo", "1.1"); function testSmdAction() { //create service object(proxy) using SMD (generated by the json result) var service = new dojo.rpc.JsonService("/json/smdAction.action"); //execute remote method var defered = service.getMyUserList(10); //attach callback to defered object defered.addCallback(function(data) { var s = ""; for (var idx = 0; idx &lt; data.length; idx++) { s += "user["+idx+"].id=" + data[idx].id + "/n"; } alert(s); }); } function init() { dojo.require("dojo.io.script"); dojo.require("dojo.rpc.JsonService"); } // --&gt;&lt;/mce:script&gt; &lt;/head&gt; &lt;body style="margin: 20px;" mce_style="margin: 20px;" onload="init();"&gt; &lt;h3&gt;json test&lt;/h3&gt; &lt;ul&gt; &lt;li&gt;&lt;a href="#" mce_href="#" onclick="testSmdAction()"&gt;SMD Action&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; &lt;/body&gt; &lt;/html&gt;</textarea> 

 

 

6. 启动web容器测试，可以使用Tomcat或者maven自带的jetty，然后访问

  http://localhost:8080/json/json.jsp

  此时可以点击页面上的链接来测试结果。

 

参考：https://cwiki.apache.org/confluence/display/WW/JSON%20Plugin