在JAVA中构造和解析JSON我用的是org.json，附件为相应的org.json.jar.

下面是两个函数，一个是创建JSON，一个是从文本构造JSON并解析之。

创建json

//construct json and output it public String jsonTest() throws JSONException{ JSONObject json=new JSONObject(); JSONArray jsonMembers = new JSONArray(); JSONObject member1 = new JSONObject(); member1.put("loginname", "zhangfan"); member1.put("password", "userpass"); member1.put("email","10371443@qq.com"); member1.put("sign_date", "2007-06-12"); jsonMembers.put(member1); JSONObject member2 = new JSONObject(); member2.put("loginname", "zf"); member2.put("password", "userpass"); member2.put("email","8223939@qq.com"); member2.put("sign_date", "2008-07-16"); jsonMembers.put(member2); json.put("users", jsonMembers); return json.toString(); }

解析json

//construct json from String and resolve it. public String jsonTest2() throws JSONException{ String jsonString="{\"users\":[{\"loginname\":\"zhangfan\",\"password\":\"userpass\",\"email\":\"10371443@qq.com\"},{\"loginname\":\"zf\",\"password\":\"userpass\",\"email\":\"822393@qq.com\"}]}"; JSONObject json= new JSONObject(jsonString); JSONArray jsonArray=json.getJSONArray("users"); String loginNames="loginname list:"; for(int i=0;i<jsonArray.length();i++){ JSONObject user=(JSONObject) jsonArray.get(i); String userName=(String) user.get("loginname"); if(i==jsonArray.length()-1){ loginNames+=userName; }else{ loginNames+=userName+","; } } return loginNames; }

JAVA中处理JSON还是相当方便的。