struts2.1.8中jsonplugin用法
正在研究，可是对json不是很熟，所以先研究哈。
导入所需jar包：
commons-fileupload-1.2.1.jar
commons-io-1.3.2.jar
freemarker-2.3.15.jar
json-lib-2.1.jar
ognl-2.7.3.jar
struts2-core-2.1.8.1.jar
struts2-json-plugin-2.1.8.1.jar
xwork-core-2.1.6.jar
JsonAction类：
package org.foerver.action;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.foerver.entity.Goods;
import com.opensymphony.xwork2.ActionSupport;
public class JsonAction extends ActionSupport {
private static final long serialVersionUID = 2601714969474548417L;
private Goods goods = new Goods();
private String message = "默认消息";
private List list = new ArrayList();
private Map<String, Object> hashMap = new HashMap<String, Object>();
public String queryList() throws Exception {
System.out.println("queryList()");
for (int i = 0; i < 4; i++) {
Goods item = new Goods();
item.setName("橘子");
item.setStand("每箱33个");
item.setMoney(99);
item.setLeavings(43);
item.setOrders(3 + i);
list.add(item);
}
return "queryList";
}
public String queryMap() {
System.out.println("queryMap()");
hashMap.put("username", "admin");
hashMap.put("password", "forever");
Goods item = new Goods();
item.setName("橘子");
item.setStand("每箱27个");
item.setMoney(99);
item.setLeavings(43);
item.setOrders(3);
hashMap.put("item", item);
return "queryMap";
}
public String message() {
System.out.println("message()");
message = "返回普通的字符串内容";
return "message";
}
public String query() {
System.out.println("query()");
goods.setName("橘子");
goods.setStand("每箱27个");
goods.setMoney(99);
goods.setLeavings(43);
goods.setOrders(3);
return "query";
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public Goods getGoods() {
return goods;
}
public void setGoods(Goods goods) {
this.goods = goods;
}
public List getList() {
return list;
}
public void setList(List list) {
this.list = list;
}
public Map<String, Object> getHashMap() {
return hashMap;
}
public void setHashMap(Map<String, Object> hashMap) {
this.hashMap = hashMap;
}
}
Goods类：
package org.foerver.entity;
import java.io.Serializable;
//商品描述
/**
* @author Administrator
*
*/
public class Goods implements Serializable{
private static final long serialVersionUID = -3430492488228556256L;
public int id;//编号
public String name;//名字
public String stand;//标准
public int money;//价格
public int leavings;//库存
public int orders;//已订购数量
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 getStand() {
return stand;
}
public void setStand(String stand) {
this.stand = stand;
}
public int getMoney() {
return money;
}
public void setMoney(int money) {
this.money = money;
}
public int getLeavings() {
return leavings;
}
public void setLeavings(int leavings) {
this.leavings = leavings;
}
public int getOrders() {
return orders;
}
public void setOrders(int orders) {
this.orders = orders;
}
}
struts.xml配置：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<!-- 指定struts配置文件修改后是否自动重新加载文件 -->
<constant name="struts.configuration.xml.reload" value="true"></constant>
<package name="json" namespace="/json" extends="json-default">
<action name="json_*" class="org.foerver.action.JsonAction" method="{1}">
<result type="json" name="{1}"/>
</action>
<action name="json_view">
<result>/json.jsp</result>
</action>
</package>
</struts>
json.jsp页面：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>json的使用</title>
<s:url id="query_message_url" action="json_message"/>
<s:url id="query_url" action="json_query"/>
<s:url id="query_list_url" action="json_queryList"/>
<s:url id="query_map_url" action="json_queryMap"/>
<script type="text/javascript" src="${pageContext.request.contextPath}/jquery1.3.2.js"></script>
<script type="text/javascript">
$(function(){
$("#btnQueryMsg").bind("click",function(){
$.ajax({
url:"<s:property value='query_message_url' />",
type:"POST",
dataType:"json",
success:function(data){
//循环json对象的所有键值对
$("#jsonData").empty();
$.each(data,function(key,value){
$("#jsonData").append("key="+key+":value="+value+"<br/>");
});
}
});
});
$("#btnQuery").bind("click",function(){
$.ajax({
url:"<s:property value='query_url' />",
type:"POST",
dataType:"json",
success:function(data){
//循环json对象的所有键值对
$("#jsonData").empty();
$.each(data.goods,function(key,value){
$("#jsonData").append("key="+key+":value="+value+"<br/>");
});
}
});
});
$("#btnQueryList").bind("click",function(){
$.getJSON(
"<s:property value='query_list_url' />",
function(data){
//循环json对象的所有键值对
$("#jsonData").empty();
$.each(data.list,function(key,value){
$("#jsonData").append("key="+key+"<br/>");
$.each(value,function(k,v){
$("#jsonData").append("key="+k+":value="+v+"<br/>");
});
$("#jsonData").append("************<br/>");
});
}
);
});
$("#btnQueryMap").bind("click",function(){
$.ajax({
url:"<s:property value='query_map_url' />",
type:"POST",
dataType:"json",
success:function(data){
//循环json对象的所有键值对
$("#jsonData").empty();
$.each(data.hashMap,function(key,value){
$("#jsonData").append("key="+key+":value="+value+"<br/>");
});
}
});
});
});
</script>
</head>
<body>
返回的json格式：<div id="jsonData"></div><br/>
<input type="button" value="返回普通消息" id="btnQueryMsg"/><br/>
<input type="button" value="返回单个对象" id="btnQuery"/><br/>
<input type="button" value="返回list对象" id="btnQueryList"/><br/>
<input type="button" value="返回map对象" id="btnQueryMap"/><br/>
<s:debug></s:debug>
</body>
</html>