Struts2 json plugin实战3 - JSON RPC

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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

<dependency><groupId>org.apache.struts</groupId><artifactId>struts2-json-plugin</artifactId><version>2.1.8.1</version></dependency>

2. 创建Action类和一个用到的User类

Action类内容

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<User> userList = new ArrayList<User>();public String execute() {return Action.SUCCESS;}@SMDMethodpublic List<User> getMyUserList(int size) {for (int i = 0; i < size; i++) {User user = new User("id_" + i, "username_" + i, "password_" + i, "desc_" + i);userList.add(user);}return userList;}public List<User> getUserList() {return userList;}public void setUserList(List<User> userList) {this.userList = userList;}}

User类内容

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;}}

3. Spring配置文件

<?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: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"><bean id="jsonExample3" class="JSONExample3" scope="prototype"/></beans>

4. Struts2配置文件

<?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><include file="struts-default.xml" /><package name="json" namespace="/json" extends="struts-default" ><result-types><result-type name="json" class="org.apache.struts2.json.JSONResult"/></result-types><interceptors><interceptor name="json" class="org.apache.struts2.json.JSONInterceptor"/></interceptors><action name="smdAction" class="jsonExample3"><interceptor-ref name="json"><param name="enableSMD">true</param></interceptor-ref><result type="json"><param name="enableSMD">true</param></result></action></package></struts>

5. 新建一个jsp文件json.jsp用来做测试

<html><head><title></title><mce:script type="text/javascript" src="http://www.google.com/jsapi?key=helloworld" mce_src="http://www.google.com/jsapi?key=helloworld"></mce:script><mce:script type="text/javascript"></mce:script></head><body style="margin: 20px;" mce_style="margin: 20px;" onload="init();"><h3>json test</h3><ul><li><a href="#" mce_href="#" onclick="testSmdAction()">SMD Action</a></li></ul></body></html>

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