实体类和 Map互相转换

使用 JSON.parseObject(JSON.toJSONString(map), 类型.class)

// 实体类转换为Map
Map map = JSON.parseObject(JSON.toJSONString(student), Map.class);
 
// Map转实体类
Student student = JSON.parseObject(JSON.toJSONString(map), User.class);

例子：

实体类代码：

public class Student {
 
    private String name;
 
    private Integer age;
 
    private String gender;
 
    public String getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
    public Integer getAge() {
        return age;
    }
 
    public void setAge(Integer age) {
        this.age = age;
    }
 
    public String getGender() {
        return gender;
    }
 
    public void setGender(String gender) {
        this.gender = gender;
    }
}

测试类代码：

Student student = new Student();
 
student.setName("张三");
student.setAge(10);
student.setGender("男");
// 实体类转换为Map
Map map = JSON.parseObject(JSON.toJSONString(student), Map.class);
map.forEach((key,value)->{
	System.out.println("key:" + key + ", value:" + value);
});
 
// Map转实体类
Student student1 = JSON.parseObject(JSON.toJSONString(map), Student.class);
System.out.println("姓名"+student1.getName());
System.out.println("年龄"+student1.getAge());
System.out.println("性别"+student1.getGender());

参考：实体类转 Map_实体类转map_Rock(洛克)的博客-CSDN博客