Json-lib Bag Notes

Json-lib.jar Development Kit Uses:

Dependent Packages:
Commons-beanutils.jar;
Commons-httpclient.jar;
Commons-lang.jar;
Ezmorph.jar, a lot of people use will prompt net.sf.ezmorph.xxx can not find, is missing this:
Morph-1.0.1.jar

RELATED Links:
http://json-lib.sourceforge.net/
http://ezmorph.sourceforge.net/
http://morph.sourceforge.net/

problems during use:
1, the old hint of the following error when converting beans to JSON format:
Exception in thread "main" Net.sf.json.JSONException:java.lang.NoSuchMethodException:Property ' name ' have no getter meth Od
FIX: Declare bean is public class XXX, must be public, I do not use the default type (class XXX)

2,exception in thread "main" Java.lang.NoSuchMethodError:org.apache.commons.lang.ArrayUtils.toObject ([C) [ljava/ Lang/character;
Reason: The definition attribute is as follows: Private char[] options = new char[] {' A ', ' f '}; It seems that this type of

3, private String func1 = "function (i) {return this.options[i];}";
And
Private Jsonfunction Func2 = new Jsonfunction (new string[] {"I"},
"Return this.options[i];");
The results are similar after conversion:
{"Func1": function (i) {return this.options[i];, "Func2": function (i) {return this.options[i];}}

Test class:

2. import java.util.ArrayList;
4. import Java.util.HashMap;
6. import java.util.List;
8. import Java.util.Map;
12. import Net.sf.json.JSONArray;
14. import Net.sf.json.JSONObject;
18. Public class Json {
20. Public Static void Main (string[] args) {
22. JSON j = New json ();
24. J.bean2json ();
26. }
30. Public void Arr2json () {
32. Boolean [] Boolarray = new boolean[] { true, false, true };
34. Jsonarray Jsonarray = Jsonarray.fromobject (Boolarray);
36. System.out.println (Jsonarray);
38. Prints [true,false,true]
40. }
44. Public void List2json () {
46. List List = new ArrayList ();
48. List.add ("first");
50. List.add ("second");
52. Jsonarray Jsonarray = jsonarray.fromobject (list);
54. System.out.println (Jsonarray);
56. Prints ["First", "second"]
58. }
62. Public void Createjson () {
64. Jsonarray Jsonarray = Jsonarray.fromobject ("[' json ', ' is ', ' easy ']");
66. System.out.println (Jsonarray);
68. Prints ["JSON", "is", "easy"]
70. }
74. Public void Map2json () {
76. Map
78. Map.put ("name", "JSON");
80. Map.put ("bool", boolean.true);
82. Map.put ("int", new Integer (1));
84. Map.put ("arr", new string[] {"A", "B"});
86. Map.put ("func", "function (i) {return this.arr[i];}");
90. Jsonobject JSON = jsonobject.fromobject (map);
92. SYSTEM.OUT.PRINTLN (JSON);
94. Prints
96. ["Name": "JSON", "bool": TRUE, "int": 1, "arr": ["a", "B"], "func": function (i) {
98. return this.arr[i]; }]
100. }
104. Public void Bean2json () {
106. Jsonobject jsonobject = Jsonobject.fromobject (new Mybean ());
108. System.out.println (Jsonobject);
110. /*
112. * Prints
114. * {"func1": function (i) {return this.options[i];
116. *}, "pojoid": 1, "name": "JSON", "FUNC2": function (i) {return
118. * This.options[i]; }}
120. */
122. }
126. Public void Json2bean () {
128. String json = "{name=/" json2/", Func1:true,pojoid:1,func2:function (a) {return A;},options:[' 1 ', ' 2 ']}";
130. Jsonobject JB = jsonobject.fromstring (JSON);
132. Jsonobject.tobean (JB, Mybean. Class);
134. System.out.println ();
136. }
138. }

Bean to manipulate:

2. import net.sf.json.JSONFunction;
6. Public class Mybean {
8. Private String name = "JSON";
10. Private int pojoid = 1;
12. Private char[] options = new char[] {' A ', ' F '};
14. Private String func1 = "function (i) {return this.options[i];}";
16. Private Jsonfunction Func2 = new jsonfunction (new string[] {"I"},
18. "Return this.options[i];");
22. Getters & Setters
24. ......
26. }

Use Methods of JSON

JSON, or JavaScript Object natation, is a lightweight data interchange format that is ideal for server-to-javascript interaction. This article will quickly explain the JSON format and demonstrate how to handle JSON-formatted data on both the client and server side, using code examples.

JSON-Required Packages

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

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/

Downloaded to the.

The Java.lang.noclassdeffounderror:net/sf/ezmorph/morpher error occurred because the Ezmorph.jar file was not imported or the version is incorrect.

Appears java.lang.noclassdeffounderror:org/apache/commons/collections/map/ The LISTORDEREDMAP error is because the Commons-collections.jar file is not imported or the version is incorrect.

Translating Java code into JSON code

1. The list collection is converted into JSON code

List List = new ArrayList (); List.add ("first"); List.add ("second"); Jsonarray jsonArray2 = Jsonarray. Fromobject (list);

2. Map collection into JSON code

Map map = new HashMap (); Map.put ("name", "JSON"); Map.put ("bool", Boolean. TRUE); Map.put ("int", new Integer (1)); Map.put ("arr", new string[] {"A", "B"}); Map.put ("func", "function (i) {return this.arr[i];}"); Jsonobject json = Jsonobject. Fromobject (map);

3. Bean converted to JSON code

Jsonobject jsonobject = jsonobject.fromobject (New Jsonbean ());

4. Convert arrays into JSON code

Boolean [] Boolarray = new boolean[] { true, false, true }; Jsonarray jsonArray1 = Jsonarray. Fromobject (Boolarray);

5. Conversion of general data into JSON code

Jsonarray jsonArray3 = Jsonarray.fromobject ("[' json ', ' is ', ' easy ']");

6. Beans conversion to JSON code

List List = new ArrayList (); JsonBean2 jb1 = new JsonBean2 (); Jb1.setcol (1); Jb1.setrow (1); Jb1.setvalue ("xx"); JsonBean2 jb2 = new JsonBean2 (); Jb2.setcol (2); Jb2.setrow (2); Jb2.setvalue (""); List.add (JB1); List.add (JB2); Jsonarray ja = jsonarray. Fromobject (list);

Json-lib Bag Notes