JSON 创建和解析
1.输出多个对象功能的json代码{"status":1,"name":2,"user":{"sex":"girl","age":1,"name":"cm111"},"game":{"uid":"111","changeid":2,"gamaname":"baby"}}代码：
publicvoid test1(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)throws Exception{
PrintWriter out = response.getWriter();
JSONObject jsonORG =new JSONObject();
jsonORG.element("status", 1);
jsonORG.element("name", 2);
Map<String , Object> user=new HashMap<String, Object>();
user.put("name","cymccc");
user.put("age", 1);
user.put("sex","girl");
Map<String , Object> game=new HashMap<String, Object>();
game.put("uid","111");
game.put("changeid", 2);
game.put("gamaname","baby");
jsonORG.element("user", user);
jsonORG.element("game", game);
response.setContentType("application/json;charset=GBK");
out.print(jsonORG);
}
2．输出数组功能的json例子
如：{"status":1,"name":2,"list":[{"sex":"girl","age":1,"name":"cym"},{"sex":"baby","age":2,"name":"111"}]}
代码：publicvoid test1(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)throws Exception{
PrintWriter out = response.getWriter();
JSONObject jsonORG = new JSONObject();
jsonORG.element("status", 1);
jsonORG.element("name", 2);
Map<String , Object> user=new HashMap<String, Object>();
user.put("name","cym");
user.put("age", 1);
user.put("sex","girl");
Map<String , Object> game=new HashMap<String, Object>();
game.put("name","111");
game.put("age", 2);
game.put("sex","baby");
List<Object> list=new ArrayList<Object>();
list.add(user);
list.add(game);
jsonORG.put("list", list);
//jsonORG.element("game", game);
response.setContentType("application/json;charset=GBK");
out.print(jsonORG);
}
解析各种json
1.如：//解析数组类型的json[{'gwcxxid':'1','spsl':'2'},{'gwcxxid':'1','spsl':'2'},{'gwcxxid':'3','spsl':'4'}]
代码： public static void jiexijson() throws JSONException {
String sJson = "[{'gwcxxid':'1','spsl':'2'},{'gwcxxid':'1','spsl':'2'},{'gwcxxid':'3','spsl':'4'}]";
JSONArray jsonArray = new JSONArray(sJson);
int iSize = jsonArray.length();
System.out.println("Size:" + iSize);
for (int i = 0; i < iSize; i++) {
JSONObject jsonObj = jsonArray.getJSONObject(i);
System.out.println("[" + i + "]gwcxxid=" + jsonObj.get("gwcxxid"));
System.out.println("[" + i + "]spsl=" + jsonObj.get("spsl"));
System.out.println();
}
}
2. // 解析返回路径的json{"status":1,"name":2}
代码：publicstaticvoid jiexijson2()throws Exception {
String temIP = "http://localhost:8089/hotelOrderCustom.go?method=test1";
URLConnection connection = (URLConnection)new URL(temIP)
.openConnection();
connection.setDoOutput(true);
InputStream os = connection.getInputStream();
// Thread.sleep(100);
int length = os.available();
byte[] buff =newbyte[length];
os.read(buff);
String s = new String(buff,"gbk");
System.out.println(s);
System.out.println(s);
JSONObject obj = new JSONObject(s);
System.out.println("status=" + obj.get("status"));
System.out.println("name=" + obj.get("name"));
//解析list
String list=obj.get("list").toString();
JSONArray arrayList=new JSONArray(list);
int size=arrayList.length();
for(int i=0;i<size;i++){
JSONObject jsonObj = arrayList.getJSONObject(i);
System.out.println("name["+i+"]"+jsonObj.get("name"));
System.out.println("sex["+i+"]"+jsonObj.get("sex"));
System.out.println("age["+i+"]]"+jsonObj.get("age"));
}
System.out.println();
}
3. //解析最简单的json{'gwcxxid':'小陈','spsl':'喝了来来来','aihao':'乱七八糟'}
代码：publicstaticvoid jiexijson3()throws JSONException {
String sJson = "{'gwcxxid':'小陈','spsl':'喝了来来来','aihao':'乱七八糟'}";
JSONObject obj = new JSONObject(sJson);
System.out.println("gwcxxid=" + obj.get("gwcxxid"));
System.out.println("spsl=" + obj.get("spsl"));
System.out.println("dd=" + obj.get("aihao"));
System.out.println();
}
4
//解析{"rspCode":200,"rspMsg":"ok","list":[{"uid":"kaix,"logo":"http:\/\/p.com.cn\/logo\/63\/16\/50_9_1.jpg","level":1,"name":"鍏崇淮搴"}]}
publicstaticvoid jiexijson4()throws JSONException {
String sJson = "{'rspCode':200,'rspMsg':'ok','list':[{'uid':'kaixin00','logo':'http://a.gif','level':1,'name':'小布丁'},{'uid':'kaixfff','logo':'http://b.gif','level':2,'name':'小布丁22'}]}";
//解析不是数组的两个字段
JSONObject obj = new JSONObject(sJson);
System.out.println("rspCode=" + obj.get("rspCode"));
System.out.println("rspMsg=" + obj.get("rspMsg"));
//解析数组,获取list数组
String test = obj.get("list").toString();
JSONArray jsonArray = new JSONArray(test);
int iSize = jsonArray.length();
for (int i = 0; i < iSize; i++) {
JSONObject jsonObj = jsonArray.getJSONObject(i);
System.out.println("[" + i +"]uid=" + jsonObj.get("uid"));
System.out.println("[" + i +"]logo=" + jsonObj.get("logo"));
System.out.println("[" + i +"]level=" + jsonObj.get("level"));
System.out.println("[" + i +"]name=" + jsonObj.get("name"));
System.out.println();
}
}
5，
//解析{"rspCode":200, "rspMsg":"ok", "game":{"uid":"hp061", "trackId":187,
// "gameId":9, "background":””, "mp3":””, "taptapFile":””}}
publicstaticvoid jiexijson5()throws JSONException {
String sJson = "{'rspCode':200, 'rspMsg':'ok', 'game':{'uid':'hpbb', 'trackId':187, 'gameId':9, 'background':'', 'mp3':'', 'taptapFile':''}}";
JSONObject obj = new JSONObject(sJson);
System.out.println("rspCode=" + obj.get("rspCode"));
System.out.println("rspMsg=" + obj.get("rspMsg"));
String test = obj.get("game").toString();
JSONObject obj2 = new JSONObject(test);
System.out.println("uid" + obj2.get("uid"));
System.out.println("trackId" + obj2.get("trackId"));
System.out.println("gameId" + obj2.get("gameId"));
System.out.println("background" + obj2.get("background"));
System.out.println("mp3" + obj2.get("mp3"));
System.out.println("taptapFile" + obj2.get("taptapFile"));
}