JAVA开工具类收集

 JSON工具类

public class PhoneInfoForm {

    //手机类型
    private String type;
    //手机版本
    private String version;
    //手机模型
    private String model;
    //消息类型
    private String messagesType;
    //getter and setter
}

{
	"type": "android",
	"version": "9.1",
	"model": "V1928A",
	"messagesType": "2",
	"sss": "sss"
}


多余字段"sss"，不会影响序列化和反序列化。

序列化一个对象成JSON字符串

PhoneInfoForm p = new PhoneInfoForm();
p.setMessagesType("2");
p.setModel("HUAWEI-Mate");
p.setType("iso");
p.setVersion("*");
String jsonString = JSON.toJSonString(p);
System.out.println(jsonString);
// 输出 {"messagesType":"2","model":"HUAWEI-Mate","type":"iso","version":"*"}

反序列化一个JSON字符串成Java对象

 String jsonString = "{"type":"android","version":"9.1","model":"V1928A","messagesType":"2","sss":"sss"}";
        PhoneInfoForm p = JSON.parseObject(jsonString ,PhoneInfoForm.class);
        System.out.println(p);

//输出
//PhoneInfoForm{type='android', version='9.1', model='V1928A', messagesType='2'}


 String jsonStringArray = "[" +
                "{"type":"android","version":"9.1","model":"V1928A","messagesType":"2","sss":"sss"}," +
                "{"type":"android","version":"9.1","model":"V1928A","messagesType":"2","sss":"sss"}" +
                "]";
        List pifs = JSON.parseArray(jsonStringArray, PhoneInfoForm.class);
        System.out.println(pifs.size());
        pifs.forEach(System.out::println);
//输出
//2
//PhoneInfoForm{type='android', version='9.1', model='V1928A', messagesType='2'}
//PhoneInfoForm{type='android', version='9.1', model='V1928A', messagesType='2'}