实体类和 Map互相转换

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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