android发送/接收json数据（转）

客户端向服务器端发送数据，这里用到了两种，一种是在url中带参数，一种是json数据发送方式；

url带参数的写法：

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

从“&”符号之后一连串都是参数。

发送方式代码编写"

1. DefaultHttpClient httpClient = new DefaultHttpClient();
2. HttpPost httpPost = new HttpPost(HttpUtil.BASIC_URL
3. + HttpUtil.SUBSCRIPTION_URL);
4. try{
5. if (cookie != null) {
6. // httpClient.setCookieStore(LoginJsonUtil.cookie);
7. List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);
8. nameValuePair.add(new BasicNameValuePair("uid",
9. uid));
10. nameValuePair.add(new BasicNameValuePair("subscriptionslist[pageindex]",
11. subscriptionslist_pageindex));
12. nameValuePair.add(new BasicNameValuePair("subscriptionslist[recordlimit]",
13. subscriptionslist_recordlimit));
14. httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));

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));

传递参数使用nameValuePair。

如果使用cookie的话，使用上段代码中注释掉的部分

httpClient.setCookieStore(LoginJsonUtil.cookie);

使用json数据格式发送信息向服务器端：

1. HttpClient httpClient = new DefaultHttpClient();
2. try {
3. HttpPost httpPost = new HttpPost(BASIC_URL + url);
4. List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>();
5. JSONObject jsonObject = new JSONObject();
6. JSONObject jsonObject2 = new JSONObject();
7. jsonObject.put("uemail", userbean.getEmail());
8. jsonObject.put("password", userbean.getPassword());
9. jsonObject2.put("userbean", jsonObject);
10. nameValuePair.add(new BasicNameValuePair("jsonString", jsonObject
11. .toString()));
12. Log.i("lifeweeker", jsonObject2.toString());
13. httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));

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));

这里每个put的顺序我不清楚有没有规定，我是严格按照提供的前后顺序来组合json数据格式的。

前面我有用到android发送json数据；这里我想总结一下我用到的解析json数据格式的方式

json数据格式解析我自己分为两种；

一种是普通的，一种是带有数组形式的；

普通形式的：

服务器端返回的json数据格式如下：

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

分析代码如下：

1. // TODO 状态处理 500 200
2. int res = 0;
3. res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
4. if (res == 200) {
5. HttpResponse httpResponse = httpClient.execute(httpPost);
6. StringBuilder builder = new StringBuilder();
7. BufferedReader bufferedReader2 = new BufferedReader(
8. new InputStreamReader(httpResponse.getEntity().getContent()));
9. String str2 = "";
10. for (String s = bufferedReader2.readLine(); s != null; s = bufferedReader2
11. .readLine()) {
12. builder.append(s);
13. }
14. Log.i("cat", ">>>>>>" + builder.toString());
15. JSONObject jsonObject = new JSONObject(builder.toString())
16. .getJSONObject("userbean");
17. String Uid;
18. String Showname;
19. String Avtar;
20. String State;
21. Uid = jsonObject.getString("Uid");
22. Showname = jsonObject.getString("Showname");
23. Avtar = jsonObject.getString("Avtar");
24. State = jsonObject.getString("State");

// TODO 状态处理 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");

带数组形式的：

服务器端返回的数据格式为：

1. {"calendar":
2. {"calendarlist":
3. [
4. {"calendar_id":"1705","title":"(\u4eb2\u5b50)ddssd","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288927800","endshowtime":"1288931400","allDay":false},
5. {"calendar_id":"1706","title":"(\u65c5\u884c)","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288933200","endshowtime":"1288936800","allDay":false}
6. ]
7. }
8. }
9. 分析代码如下：
10. // TODO 状态处理 500 200
11. int res = 0;
12. res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
13. if (res == 200) {
14. HttpResponse httpResponse = httpClient.execute(httpPost);
15. StringBuilder builder = new StringBuilder();
16. BufferedReader bufferedReader2 = new BufferedReader(
17. new InputStreamReader(httpResponse.getEntity().getContent()));
18. String str2 = "";
19. for (String s = bufferedReader2.readLine(); s != null; s = bufferedReader2
20. .readLine()) {
21. builder.append(s);
22. }
23. Log.i("cat", ">>>>>>" + builder.toString());
24. JSONObject jsonObject = new JSONObject(builder.toString())
25. .getJSONObject("calendar");
26. JSONArray jsonArray = jsonObject.getJSONArray("calendarlist");
27. for(int i=0;i<jsonArray.length();i++){
28. JSONObject jsonObject2 = (JSONObject)jsonArray.opt(i);
29. CalendarInfo calendarInfo = new CalendarInfo();
30. calendarInfo.setCalendar_id(jsonObject2.getString("calendar_id"));
31. calendarInfo.setTitle(jsonObject2.getString("title"));
32. calendarInfo.setCategory_name(jsonObject2.getString("category_name"));
33. calendarInfo.setShowtime(jsonObject2.getString("showtime"));
34. calendarInfo.setEndtime(jsonObject2.getString("endshowtime"));
35. calendarInfo.setAllDay(jsonObject2.getBoolean("allDay"));
36. calendarInfos.add(calendarInfo);
37. }

{"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}
            ]
    }
}
分析代码如下：
// TODO 状态处理 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);
                    }

总结，普通形式的只需用JSONObject ，带数组形式的需要使用JSONArray 将其变成一个list。