json创建和解析

创建json

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"));

}