本文实例讲述了java对象与json对象之间互相转换实现方法。分享给大家供大家参考，具体如下：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
import java.util.ArrayList;import java.util.Collection;import java.util.Iterator;import java.util.List;import net.sf.json.JSONArray;import net.sf.json.JSONObject;public class MainClass { public static void main(String[] args) { TestJsonBean(); TestJsonAttribute(); TestJsonArray(); } @SuppressWarnings("rawtypes") private static void TestJsonArray() { Student student1 = new Student(); student1.setId(1); student1.setName("jag"); student1.setSex("man"); student1.setAge(25); student1.setHobby(new String[]{"篮球","游戏"}); Student student2 = new Student(); student2.setId(2); student2.setName("tom"); student2.setSex("woman"); student2.setAge(23); student2.setHobby(new String[]{"上网","跑步"}); List<Student> list = new ArrayList<Student>(); list.add(student1); list.add(student2); JSONArray jsonArray = JSONArray.fromObject(list); System.out.println(jsonArray.toString()); JSONArray new_jsonArray=JSONArray.fromObject(jsonArray.toArray()); Collection java_collection=JSONArray.toCollection(new_jsonArray); if(java_collection!=null && !java_collection.isEmpty()) { Iterator it=java_collection.iterator(); while(it.hasNext()) { JSONObject jsonObj=JSONObject.fromObject(it.next()); Student stu=(Student) JSONObject.toBean(jsonObj,Student.class); System.out.println(stu.getName()); } } } private static void TestJsonAttribute() { /** * 创建json对象并为该对象设置属性 */ JSONObject jsonObj = new JSONObject(); jsonObj.put("Int_att",25);//添加int型属性 jsonObj.put("String_att","str");//添加string型属性 jsonObj.put("Double_att",12.25);//添加double型属性 jsonObj.put("Boolean_att",true);//添加boolean型属性 //添加JSONObject型属性 JSONObject jsonObjSon = new JSONObject(); jsonObjSon.put("id", 1); jsonObjSon.put("name", "tom"); jsonObj.put("JSONObject_att",jsonObjSon); //添加JSONArray型属性 JSONArray jsonArray = new JSONArray(); jsonArray.add("array0"); jsonArray.add("array1"); jsonArray.add("array2"); jsonArray.add("array3"); jsonObj.put("JSONArray_att", jsonArray); System.out.println(jsonObj.toString()); System.out.println("Int_att:"+jsonObj.getInt("Int_att")); System.out.println("String_att:"+jsonObj.getString("String_att")); System.out.println("Double_att:"+jsonObj.getDouble("Double_att")); System.out.println("Boolean_att:"+jsonObj.getBoolean("Boolean_att")); System.out.println("JSONObject_att:"+jsonObj.getJSONObject("JSONObject_att")); System.out.println("JSONArray_att:"+jsonObj.getJSONArray("JSONArray_att")); } /** * java对象与json对象互相转换 */ private static void TestJsonBean() { /** * 创建java对象 */ Student student = new Student(); student.setId(1); student.setName("jag"); student.setSex("man"); student.setAge(25); student.setHobby(new String[]{"篮球","上网","跑步","游戏"}); /** * java对象转换成json对象，并获取json对象属性 */ JSONObject jsonStu = JSONObject.fromObject(student); System.out.println(jsonStu.toString()); System.out.println(jsonStu.getJSONArray("hobby")); /** * json对象转换成java对象，并获取java对象属性 */ Student stu = (Student) JSONObject.toBean(jsonStu, Student.class); System.out.println(stu.getName()); /** * 创建json对象 */ JSONObject jsonObj = new JSONObject(); jsonObj.put("id",1); jsonObj.put("name","张勇"); jsonObj.put("sex","男"); jsonObj.put("age",24); //jsonObj.put("hobby",new String[]{"上网","游戏","跑步","音乐"}); //System.out.println(jsonObj.toString()); /** * json对象转换成java对象 */ Student stud = (Student) JSONObject.toBean(jsonObj,Student.class); System.out.println(stud.getName()); }} |
希望本文所述对大家java程序设计有所帮助。
原文链接：http://blog.csdn.net/sjiang2142/article/details/6706097
