java - 如何将 json 文件转换为某些对象类

Question

我有一个像这样的 json 文件:

{
  "Student" : [
  {
    "name": "john",
    "age": 12
  }, {
    "name": "jack",
    "age": 20
  }
  ]
}

我的学生类(class)是:

public class Student {
private String name;
private int age;

public Student(String name, int age) {
    this.name = name;
    this.age = age;
}

public String getName() {
    return name;
}

public int getAge() {
    return age;
}

}

我想使用 json 创建一个名为“jack”的 Student 实例我该怎么做？

Answer 1

创建另一个类 Students其中包含 List<Student> .

public class Students { 
  List<Student> Student;

  public List<Student> getStudents() {
    return Student;
  }

  public void setStudent(List<Student> students) {
     this.Student=students;
  }

}

Gson gson = new Gson();
String jsonString = "Your Json String";
Students student = gson.fromJson(jsonString, Students.class);