JavaBean

package com.daily.json;import com.alibaba.fastjson.annotation.JSONField;import java.util.Date;public class Student {    @JSONField(name = "NAME", ordinal = 3)    private String name;    @JSONField(ordinal = 2)    private int age;    @JSONField(format = "yyyy-MM-dd HH:mm:ss", ordinal = 1)    private Date birthDay;    @JSONField(serialize = false)    private String addr;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public Date getBirthDay() {        return birthDay;    }    public void setBirthDay(Date birthDay) {        this.birthDay = birthDay;    }    public String getAddr() {        return addr;    }    public void setAddr(String addr) {        this.addr = addr;    }}

测试类

package com.daily.json;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.TypeReference;import com.alibaba.fastjson.serializer.PropertyFilter;import java.util.ArrayList;import java.util.Date;import java.util.List;public class TestFastJson {    private static Student student;    private static List
    
      studentList;    static {        student = new Student();        student.setName("张三");        student.setAge(18);        student.setBirthDay(new Date());        student.setAddr("湖南");        studentList = new ArrayList<>();        studentList.add(student);        studentList.add(student);    }    private static PropertyFilter propertyFilter = (object, name, value) -> {        if (name.equals("age") && value.equals(18)) {                return false;        }        return true;    };    public static void main(String[] args) {        String studentStr = JSON.toJSONString(student);        //转对象        Student student1 = JSON.parseObject(studentStr, Student.class);        Student student2 = JSON.parseObject(studentStr, new TypeReference
     
      () {});        //转集合        String studentListStr = JSON.toJSONString(studentList);        List
      
        students = JSON.parseArray(studentListStr, Student.class);        List
       
         students2 = JSON.parseObject(studentListStr, new TypeReference
        
         
          >() { }); //过滤字段，默认过滤null String student3 = JSON.toJSONString(student, propertyFilter); System.out.println(student3); }}