在需要用到JSON對象封裝數據的時候，往往會寫很多代碼，也有很多復制粘貼，為了用POJO的思想我們可以裝JSON轉化為實體對象進行操作
|
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
|
package myUtil; import java.io.IOException; import myProject.Student;import myProject.StudentList; import org.codehaus.jackson.map.ObjectMapper;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;/** * 實體類和JSON對象之間相互轉化（依賴包jackson-all-1.7.6.jar、jsoup-1.5.2.jar） * @author wck * */public class JSONUtil { /** * 將json轉化為實體POJO * @param jsonStr * @param obj * @return */ public static<T> Object JSONToObj(String jsonStr,Class<T> obj) { T t = null; try { ObjectMapper objectMapper = new ObjectMapper(); t = objectMapper.readValue(jsonStr, obj); } catch (Exception e) { e.printStackTrace(); } return t; } /** * 將實體POJO轉化為JSON * @param obj * @return * @throws JSONException * @throws IOException */ public static<T> JSONObject objectToJson(T obj) throws JSONException, IOException { ObjectMapper mapper = new ObjectMapper(); // Convert object to JSON string String jsonStr = ""; try { jsonStr = mapper.writeValueAsString(obj); } catch (IOException e) { throw e; } return new JSONObject(jsonStr); } public static void main(String[] args) throws JSONException, IOException { JSONObject obj = null; obj = new JSONObject(); obj.put("name", "213"); obj.put("age", 27); JSONArray array = new JSONArray(); array.put(obj); obj = new JSONObject(); obj.put("name", "214"); obj.put("age", 28); array.put(obj); Student stu = (Student) JSONToObj(obj.toString(), Student.class); JSONObject objList = new JSONObject(); objList.put("student", array); System.out.println("objList:"+objList); StudentList stuList = (StudentList) JSONToObj(objList.toString(), StudentList.class); System.out.println("student:"+stu); System.out.println("stuList:"+stuList); System.out.println("#####################################"); JSONObject getObj = objectToJson(stu); System.out.println(getObj); }} |
以上所述就是本文的全部內容了，希望大家能夠喜歡。
