fastjson 的简单使用

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public static void main(String[] args) {/*普通对象与json相互转换*/User u = new User("miquan", "000");//{"@type":"testjava.User","password":"000","userName":"miquan"}String jsonUser = JSON.toJSONString(u, SerializerFeature.WriteClassName);System.out.println(jsonUser);User user = JSON.parseObject(jsonUser, User.class);/*带集合的对象与json字符串相互转换*/List<String> list = new ArrayList<String>();list.add("miquan");list.add("qiantu");Download d = new Download();d.setEmojiSetName("guoqiao");d.setEmojiPathList(list);//{"@type":"testjava.Download","emojiPathList":["miquan","qiantu"],"emojiSetName":"guoqiao"}String jsonList = JSON.toJSONString(d, SerializerFeature.WriteClassName);System.out.println(jsonList);Download download = JSON.parseObject(jsonList, Download.class);/*json与List对象相互转换*/List<User> listUser = new ArrayList<User>();listUser.add(new User("liangguoqiao", "iloveyou"));listUser.add(new User("liangguoqiao", "iloveyou"));//[{"password":"iloveyou","userName":"liangguoqiao"},//{"password":"iloveyou","userName":"liangguoqiao"}]String json = JSON.toJSONString(listUser);System.out.println(json);List<User> users = JSON.parseArray(json, User.class);}

注意：1、下载地址

2、User和Download等实体类必须添加空的构造函数

3、转为JSON字符串的时候加上SerializerFeature.WriteClassName

4、坐等下班。。。

package com.yangshidesign.weixinface.bean;import java.util.List;public class Download {private String emojiSetName;/** 表情图片名字 */private List<String> emojiNameList;public Download() {super();}public String getEmojiSetName() {return emojiSetName;}public void setEmojiSetName(String emojiSetName) {this.emojiSetName = emojiSetName;}public List<String> getEmojiNameList() {return emojiNameList;}public void setEmojiNameList(List<String> emojiNameList) {this.emojiNameList = emojiNameList;}}

package testjava;public class User {private String userName;private String password;public User() {super();}public User(String userName, String password) {super();this.userName = userName;this.password = password;}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;}}

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