android發送/接收json數據

客戶端向服務器端發送數據，這裏用到了兩種，一種是在url中帶參數，一種是json數據發送方式；

url帶參數的寫法：

url+/?r=m/calendar/contact_list&uid=3&&subscriptionslist[pageindex]=10&subscriptionslist[recordlimit]=10

 

 

從“&”符號之後一連串都是參數。

發送方式代碼編寫"

DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(HttpUtil.BASIC_URL
                + HttpUtil.SUBSCRIPTION_URL);
        try{
            if (cookie != null) {
               // httpClient.setCookieStore(LoginJsonUtil.cookie);
                List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);
                nameValuePair.add(new BasicNameValuePair("uid",
                        uid));
                nameValuePair.add(new BasicNameValuePair("subscriptionslist[pageindex]",
                        subscriptionslist_pageindex));
                nameValuePair.add(new BasicNameValuePair("subscriptionslist[recordlimit]",
                        subscriptionslist_recordlimit));
                httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));

 

 

傳遞參數使用nameValuePair。

如果使用cookie的話，使用上段代碼中註釋掉的部分

httpClient.setCookieStore(LoginJsonUtil.cookie);

 

使用json數據格式發送信息向服務器端：

 

HttpClient httpClient = new DefaultHttpClient();
        try {
            HttpPost httpPost = new HttpPost(BASIC_URL + url);
            List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>();
            JSONObject jsonObject = new JSONObject();
            JSONObject jsonObject2 = new JSONObject();
            jsonObject.put("uemail", userbean.getEmail());
            jsonObject.put("password", userbean.getPassword());
            jsonObject2.put("userbean", jsonObject);
            nameValuePair.add(new BasicNameValuePair("jsonString", jsonObject
                    .toString()));
            Log.i("lifeweeker", jsonObject2.toString());
            httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));

 

這裏每個put的順序我不清楚有沒有規定，我是嚴格按照提供的前後順序來組合json數據格式的。

 

 

前面我有用到android發送json數據；這裏我想總結一下我用到的解析json數據格式的方式

json數據格式解析我自己分爲兩種；

一種是普通的，一種是帶有數組形式的；

 

 

普通形式的：

服務器端返回的json數據格式如下：

{"userbean":{"Uid":"100196","Showname":"\u75af\u72c2\u7684\u7334\u5b50","Avtar":null,"State":1}}

分析代碼如下：

 

// TODO 狀態處理 500 200
                int res = 0;
                res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
                if (res == 200) {

                    HttpResponse httpResponse = httpClient.execute(httpPost);
                    StringBuilder builder = new StringBuilder();
                    BufferedReader bufferedReader2 = new BufferedReader(
                            new InputStreamReader(httpResponse.getEntity().getContent()));
                    String str2 = "";
                    for (String s = bufferedReader2.readLine(); s != null; s = bufferedReader2
                            .readLine()) {
                        builder.append(s);
                    }
                    Log.i("cat", ">>>>>>" + builder.toString());
JSONObject jsonObject = new JSONObject(builder.toString())
                        .getJSONObject("userbean");
                String Uid;
                String Showname;
                String Avtar;
                String State;
                Uid = jsonObject.getString("Uid");
                Showname = jsonObject.getString("Showname");
                Avtar = jsonObject.getString("Avtar");
                State = jsonObject.getString("State");

 

帶數組形式的：

服務器端返回的數據格式爲：

 

{"calendar":
    {"calendarlist":
            [
           {"calendar_id":"1705","title":"(\u4eb2\u5b50)ddssd","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288927800","endshowtime":"1288931400","allDay":false},
           {"calendar_id":"1706","title":"(\u65c5\u884c)","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288933200","endshowtime":"1288936800","allDay":false}
            ]
    }
}
分析代碼如下：
// TODO 狀態處理 500 200
                int res = 0;
                res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
                if (res == 200) {

                    HttpResponse httpResponse = httpClient.execute(httpPost);
                    StringBuilder builder = new StringBuilder();
                    BufferedReader bufferedReader2 = new BufferedReader(
                            new InputStreamReader(httpResponse.getEntity().getContent()));
                    String str2 = "";
                    for (String s = bufferedReader2.readLine(); s != null; s = bufferedReader2
                            .readLine()) {
                        builder.append(s);
                    }
                    Log.i("cat", ">>>>>>" + builder.toString());

                    JSONObject jsonObject = new JSONObject(builder.toString())
                            .getJSONObject("calendar");
                    JSONArray jsonArray = jsonObject.getJSONArray("calendarlist");
                    for(int i=0;i<jsonArray.length();i++){
                        JSONObject jsonObject2 = (JSONObject)jsonArray.opt(i);
                        CalendarInfo calendarInfo = new CalendarInfo();
                        calendarInfo.setCalendar_id(jsonObject2.getString("calendar_id"));
                        calendarInfo.setTitle(jsonObject2.getString("title"));
                        calendarInfo.setCategory_name(jsonObject2.getString("category_name"));
                        calendarInfo.setShowtime(jsonObject2.getString("showtime"));
                        calendarInfo.setEndtime(jsonObject2.getString("endshowtime"));
                        calendarInfo.setAllDay(jsonObject2.getBoolean("allDay"));
                        calendarInfos.add(calendarInfo);
                    }

 

總結，普通形式的只需用JSONObject ，帶數組形式的需要使用JSONArray 將其變成一個list。