A generic collection of Java classes is converted to a JSON object __js

Source: Internet
Author: User
Tags object object stringbuffer
Package com.sunweb.util.jsonfactory;
02
03 Import java.util.List;
04
05 Import Com.sunweb.util.jsonfactory.jsontools.JSONArray;
06 Import com.sunweb.util.jsonfactory.jsontools.JSONException;
07 Import Com.sunweb.util.jsonfactory.jsontools.JSONObject;
08
09 /**
10 * @title public JSON data format conversion
11 * @author He Bin
12 */
13 public class Convertjsonutils {
14
15 Public Convertjsonutils () {
16 Super ();
17 }
18
19 /**
20 * Function: Convert generic collection to component page JSON data
21st *
22 * @param list
23 * Generic Collection
24 * @param countlist
25 * Total number of rows in the data collection
26 * @return Page-paged JSON data
27 */
28 public static String Convertlisttopagejson (list<?> List, int countlist) {
29 Create a new JSON array
30 Jsonarray Jsonarray = new Jsonarray ();
31 Create a new JSON object
32 Jsonobject jsonobject = null;
33 Traversing a generic collection
34 for (Object object:list) {
35 Jsonobject = new Jsonobject (object);
36 Jsonarray.put (Jsonobject);
37 }
38 converting data formats
39 String json = jsonarray.tostring ();
40 Stitching strings
41 StringBuffer sb = new StringBuffer ();
42 Sb.append ("{\" totalcount\ ":");
43 Sb.append (countlist);
44 Sb.append (", \" rows\ ":");
45 Sb.append (JSON);
46 Sb.append ("}");
47 String jsonstring = sb.tostring ();
48 return jsonstring;
49 }
50 /**
51 * Function: Convert generic collection to component page JSON data
52 *
53 * @param list
54 * Generic Collection
55 * @param countlist
56 * Total number of rows in the data collection
57 * @return Page-paged JSON data
58 */
59 public static String Convertlisttopagejson (list<?> List) {
60 Create a new JSON array
61 Jsonarray Jsonarray = new Jsonarray ();
62 Create a new JSON object
63 Jsonobject jsonobject = null;
64 Traversing a generic collection
65 for (Object object:list) {
66 Jsonobject = new Jsonobject (object);
67 Jsonarray.put (Jsonobject);
68 }
69 converting data formats
70 String json = jsonarray.tostring ();
71 Stitching strings
72 Jsonobject JN = new Jsonobject ();
73 try {
74 Jn.put ("Records", Jsonarray);
75 catch (Jsonexception e) {
76 TODO auto-generated Catch block
77 E.printstacktrace ();
78 }
79 return jn.tostring ();
80 }
81
82 }
[file] Test.java ~ 739B Download
01 Package com.sunweb.util.jsonfactory;
02
03 Import java.util.ArrayList;
04 Import java.util.List;
05
06 public class Test {
07
08 /**
09 * @param args
10 */
11 public static void Main (string[] args) {
12 list<student> list = new arraylist<student> (); Create a generic list collection
13 Student stu = null;
14 for (int i=0;i<20;i++) {
15 Stu = new Student ();
16 Stu.setid (i);
17 Stu.setname ("He Bing
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