Organize Java JSON tools

1. Configure the development and running environment

JSON required package

Commons-httpclient-3.1.jar
Commons-lang-2.4.jar
Commons-logging-1.1.1.jar
Json-lib-2.2.3-jdk13.jar
Ezmorph-1.0.6.jar
Commons-collections-3.2.1.jar

Xom-1.0b3.jar

Commons-beanutils.jar

The above package can be

Http://commons.apache.org/index.html

Http://json-lib.sourceforge.net/

Http://ezmorph.sourceforge.net/

Http://morph.sourceforge.net/

Http://www.docjar.com/

1. Package com. Alibaba yyy. polabs. util. JSON;
3. Import java. Text. parseexception;
4. Import java. util. arraylist;
5. Import java. util. date;
6. Import java. util. hashmap;
7. Import java. util. iterator;
8. Import java. util. List;
9. Import java. util. Map;
11. Import com. Alibaba yyy. polabs. util. dateutil;
13. Import net. SF. JSON. jsonarray;
14. Import net. SF. JSON. jsonobject;
15. Import net. SF. JSON. jsonconfig;
16. Import net. SF. JSON. util. cycledetectionstrategy;
18. /**
19. * JSON tool class, which converts JSON data into Java objects and Java objects into JSON
20. Public class jsonutil {
22. /**
23. * Get a Java object from the character format of a JSON object
24. *
25. * @ Param jsonstring
26. * @ Param pojocalss
27. * @ Return
28. */
29. Public static object getobject4jsonstring (string jsonstring, class pojocalss ){
30. Object pojo;
31. Jsonobject = jsonobject. fromobject (jsonstring );
32. Pojo = jsonobject. tobean (jsonobject, pojocalss );
33. Return pojo;
34. }
37. /**
38. * Obtain a map from the JSON hash expression and modify map to support nesting.
39. *
40. * @ Param jsonstring
41. * @ Return
42. */
43. Public static map getmap4json (string jsonstring ){
44. Jsonobject = jsonobject. fromobject (jsonstring );
45. Iterator keyiter = jsonobject. Keys ();
46. String key;
47. Object value;
48. Map valuemap = new hashmap ();
50. While (keyiter. hasnext ()){
51. Key = (string) keyiter. Next ();
52. Value = jsonobject. Get (key );
53. Valuemap. Put (Key, value );
54. }
56. Return valuemap;
57. }
60. /**
61. * Get the corresponding Java array from the json Array
62. *
63. * @ Param jsonstring
64. * @ Return
65. */
66. Public static object [] getobjectarray4json (string jsonstring ){
67. Jsonarray = jsonarray. fromobject (jsonstring );
68. Return jsonarray. toarray ();
70. }
73. /**
74. * Get a Java object list from the JSON object set expression
75. *
76. * @ Param jsonstring
77. * @ Param pojoclass
78. * @ Return
79. */
80. Public static list getlist4json (string jsonstring, class pojoclass ){
82. Jsonarray = jsonarray. fromobject (jsonstring );
83. Jsonobject;
84. Object pojovalue;
86. List list = new arraylist ();
87. For (INT I = 0; I <jsonarray. Size (); I ++ ){
89. Jsonobject = jsonarray. getjsonobject (I );
90. Pojovalue = jsonobject. tobean (jsonobject, pojoclass );
91. List. Add (pojovalue );
93. }
94. Return list;
96. }
99. /**
100. * Parse the Java String Array from the JSON Array
101. *
102. * @ Param jsonstring
103. * @ Return
104. */
105. Public static string [] getstringarray4json (string jsonstring ){
107. Jsonarray = jsonarray. fromobject (jsonstring );
108. String [] stringarray = new string [jsonarray. Size ()];
109. For (INT I = 0; I <jsonarray. Size (); I ++ ){
110. Stringarray [I] = jsonarray. getstring (I );
112. }
114. Return stringarray;
115. }
118. /**
119. * Parse the javalong object array from the json Array
120. *
121. * @ Param jsonstring
122. * @ Return
123. */
124. Public static long [] getlongarray4json (string jsonstring ){
126. Jsonarray = jsonarray. fromobject (jsonstring );
127. Long [] longarray = new long [jsonarray. Size ()];
128. For (INT I = 0; I <jsonarray. Size (); I ++ ){
129. Longarray [I] = jsonarray. getlong (I );
131. }
132. Return longarray;
133. }
136. /**
137. * Parse the Java integer object array from the json Array
138. *
139. * @ Param jsonstring
140. * @ Return
141. */
142. Public static integer [] getintegerarray4json (string jsonstring ){
144. Jsonarray = jsonarray. fromobject (jsonstring );
145. Integer [] integerarray = new integer [jsonarray. Size ()];
146. For (INT I = 0; I <jsonarray. Size (); I ++ ){
147. Integerarray [I] = jsonarray. getint (I );
149. }
150. Return integerarray;
151. }
153. /**
154. * Parse the Java date object array from the json array. This method must ensure that
155. *
156. * @ Param jsonstring
157. * @ Return
158. * @ Throws parseexception
159. */
160. Public static date [] getdatearray4json (string jsonstring, string dataformat)
161. Throws parseexception {
163. Jsonarray = jsonarray. fromobject (jsonstring );
164. Date [] datearray = new date [jsonarray. Size ()];
165. String datestring;
166. Date;
168. For (INT I = 0; I <jsonarray. Size (); I ++ ){
169. Datestring = jsonarray. getstring (I );
170. Date = dateutil. parsedate (datestring, dataformat );
171. Datearray [I] = date;
173. }
174. Return datearray;
175. }
178. /**
179. * Parse the Java integer object array from the json Array
180. *
181. * @ Param jsonstring
182. * @ Return
183. */
184. Public static double [] getdoublearray4json (string jsonstring ){
186. Jsonarray = jsonarray. fromobject (jsonstring );
187. Double [] doublearray = new double [jsonarray. Size ()];
188. For (INT I = 0; I <jsonarray. Size (); I ++ ){
189. Doublearray [I] = jsonarray. getdouble (I );
191. }
192. Return doublearray;
193. }
196. /**
197. * Convert a Java object to a JSON string
198. *
199. * @ Param javaobj
200. * @ Return
201. */
202. Public static string getjsonstring4javapojo (Object javaobj ){
204. Jsonobject JSON;
205. JSON = jsonobject. fromobject (javaobj );
206. Return JSON. tostring ();
208. }
210. }