1 package per.swwfourteen.fourteen;
 2 
 3 public class Teacher {
 4     private String id;
 5 
 6     private String name;
 7 
 8     private String password;
 9 
10     private String age;
11 
12     private Car car;
13 
14     public void setId(String id) {
15         this.id = id;
16     }
17 
18     public String getId() {
19         return this.id;
20     }
21 
22     public void setName(String name) {
23         this.name = name;
24     }
25 
26     public String getName() {
27         return this.name;
28     }
29 
30     public void setPassword(String password) {
31         this.password = password;
32     }
33 
34     public String getPassword() {
35         return this.password;
36     }
37 
38     public void setAge(String age) {
39         this.age = age;
40     }
41 
42     public String getAge() {
43         return this.age;
44     }
45 
46     public void setCar(Car car) {
47         this.car = car;
48     }
49 
50     public Car getCar() {
51         return this.car;
52     }
53 
54 }

 1 package per.swwfourteen.fourteen;
 2 
 3 public class Car {
 4     private String num;
 5 
 6     public void setNum(String num) {
 7         this.num = num;
 8     }
 9 
10     public String getNum() {
11         return this.num;
12     }
13 
14 }

 1 package per.swwfourteen.fourteen;
 2 
 3 import java.util.List;
 4 
 5 public class Root_List {
 6     private List<Student> student;
 7 
 8     private List<Teacher> teacher;
 9 
10     public void setStudent(List<Student> student) {
11         this.student = student;
12     }
13 
14     public List<Student> getStudent() {
15         return this.student;
16     }
17 
18     public void setTeacher(List<Teacher> teacher) {
19         this.teacher = teacher;
20     }
21 
22     public List<Teacher> getTeacher() {
23         return this.teacher;
24     }
25 
26 }

 1 package per.swwfourteen.fourteen;
 2 
 3 import java.io.BufferedReader;
 4 import java.io.File;
 5 import java.io.FileReader;
 6 import java.io.IOException;
 7 
 8 import com.alibaba.fastjson.JSONObject;
 9 
10 public class JsonRoot {
11     public static void main(String[] args)throws Exception{
12         Root_List root=JSONObject.parseObject(ReadRoot("D:"+File.separator+"1.json"),Root_List.class);
13         for(Student s:root.getStudent()){
14             System.out.println(s.getId());
15             System.out.println(s.getName());
16             System.out.println(s.getAge());
17             System.out.println(s.getPassword());
18         }
19         for(Teacher t:root.getTeacher()){
20             System.out.println(t.getId());
21             System.out.println(t.getName());
22             System.out.println(t.getAge());
23             System.out.println(t.getPassword());
24             System.out.println(t.getCar());
25         }
26     }
27     
28     public static String ReadRoot(String rer)throws IOException{
29         StringBuffer sb=new StringBuffer();
30         BufferedReader br=new BufferedReader(new FileReader(rer));
31         char[] it=new char[1024];
32         int sum=0;
33         while((sum=br.read(it))!=-1){
34             String s=String.valueOf(it, 0, sum);
35             sb.append(s);
36         }
37         br.close();
38         return sb.toString();
39     }
40 }

 1 {
 2   "Root": {
 3     "student": [
 4       {
 5         "id": "001",
 6         "name": "student1",
 7         "password": "123",
 8         "age": "20"
 9       },
10       {
11         "id": "002",
12         "name": "student2",
13         "password": "456",
14         "age": "21"
15       },
16       {
17         "id": "003",
18         "name": "student3",
19         "password": "123",
20         "age": "21"
21       }
22     ],
23     "teacher": [
24       {
25         "id": "001",
26         "name": "teacher1",
27         "password": "123",
28         "age": "20",
29         "car": { "num": "098" }
30       },
31       {
32         "id": "002",
33         "name": "teacher2",
34         "password": "123",
35         "age": "20",
36         "car": { "num": "098" }
37       }
38     ]
39   }
40 }