FastJson学习

初学者，多多指正

Person实体类

public class Person {@JSONField(name = \"id1\",ordinal = 1)private int id;@JSONField(name = \"yourName1\",ordinal = 2)private String yourName;@JSONField(name = \"birthday1\",format = \"yyyy-MM-dd\",ordinal = 3)private Date birthday;public Person() {}public Person(int id, String yourName, Date birthday) {this.id = id;this.yourName = yourName;this.birthday = birthday;}public int getId() {return id;}public void setId(int id) {this.id = id;}public String getYourName() {return yourName;}public void setYourName(String yourName) {this.yourName = yourName;}public Date getBirthday() {return birthday;}public void setBirthday(Date birthday) {this.birthday = birthday;}@Overridepublic String toString() {return \"Person{\" +\"id=\" + id +\", yourName=\'\" + yourName + \'\\\'\' +\", birthday=\" + birthday +\'}\';}}

测试

public class JsonTest3 {public static void main(String[] args) {Person person1 = new Person(12,\"xiaoxiao\",new Date());//java对象转json字符串String s = JSON.toJSONString(person1);System.out.println(s);//JSONObject 继承JSON, 也就是说JSON有的功能一般JSONObject都有//JSONObject 实现了Map接口，所以JSONObject实现了Map中所有的抽象方法//json字符串转json对象JSONObject jsonObject = JSON.parseObject(s);System.out.println(jsonObject);//根据json特性，根据key值获取对应的value值System.out.println(jsonObject.get(\"id1\"));System.out.println(jsonObject.get(\"yourName1\"));System.out.println(jsonObject.get(\"birthday1\"));//        Object parse = JSON.parse(s);//        System.out.println(parse);}}

结果展示

D:\\JDK_IDEA\\jdk\\bin\\java.exe ...{\"id1\":12,\"yourName1\":\"xiaoxiao\",\"birthday1\":\"2020-08-06\"}{\"yourName1\":\"xiaoxiao\",\"id1\":12,\"birthday1\":\"2020-08-06\"}12xiaoxiao2020-08-06