在Android中使用的参数后使用的HttpClient和HttpPost

问题描述

我在写$ C $下一个Android应用程序，应该采取数据包作为JSON和它发布到Web服务器，这又是应该使用JSON回应。

I'm writing code for an Android application that is supposed to take data, package it as Json and post it to a web server, that in turn is supposed to respond with json.

使用GET请求工作正常，但由于某种原因，使用POST的所有数据似乎得到剥离和服务器没有收到任何东西。

Using a GET request works fine, but for some reason using POST all data seems to get stripped and the server does not receive anything.

下面是的code的一个片段：

Here's a snippet of the code:

HttpParams params = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(params, 5000);
HttpConnectionParams.setSoTimeout(params, 5000);
DefaultHttpClient httpClient = new DefaultHttpClient(params);
BasicCookieStore cookieStore = new BasicCookieStore();
httpClient.setCookieStore(cookieStore);

String uri = JSON_ADDRESS;
String result = "";
String username = "user";
String apikey = "something";
String contentType = "application/json";

JSONObject jsonObj = new JSONObject();

try {
    jsonObj.put("username", username);
    jsonObj.put("apikey", apikey);
} catch (JSONException e) {
    Log.e(TAG, "JSONException: " + e);
}

HttpPost httpPost = new HttpPost(uri);
List<NameValuePair> postParams = new ArrayList<NameValuePair>();
postParams.add(new BasicNameValuePair("json", jsonObj.toString()));
HttpGet httpGet = null;
try {
    UrlEncodedFormEntity entity = new UrlEncodedFormEntity(postParams);
    entity.setContentEncoding(HTTP.UTF_8);
    entity.setContentType("application/json");
    httpPost.setEntity(entity);

    httpPost.setHeader("Content-Type", contentType);
    httpPost.setHeader("Accept", contentType);
} catch (UnsupportedEncodingException e) {
    Log.e(TAG, "UnsupportedEncodingException: " + e);
}

try {
    HttpResponse httpResponse = httpClient.execute(httpPost);
    HttpEntity httpEntity = httpResponse.getEntity();

    if (httpEntity != null) {
        InputStream is = httpEntity.getContent();
        result = StringUtils.convertStreamToString(is);
        Log.i(TAG, "Result: " + result);
    }
} catch (ClientProtocolException e) {
    Log.e(TAG, "ClientProtocolException: " + e);
} catch (IOException e) {
    Log.e(TAG, "IOException: " + e);
}

return result;

我想我已经跟着就如何创建参数，并张贴他们的一般准则，但显然不是。

I think I have followed the general guidelines on how to create the parameters and post them, but apparently not.

任何帮助或指针的地方，我能找到一个解决方案，是非常欢迎在这一点上（花几个小时实现无后的数据之后曾经发送）。真正的服务器上运行的Tomcat检票，但我也测试了它一个简单的PHP页面上，有没有什么区别。

Any help or pointers to where I can find a solution, are very welcome at this point (after spending a few hours realizing no post data was ever sent). The real server is running Wicket on Tomcat, but I've also tested it out on a simple PHP page, with no difference.

推荐答案

您是否尝试过这样做没有JSON对象并通过了两项basicnamevaluepairs？同时，它可能是与你的serversettings

have you tried doing it without the JSON object and just passed two basicnamevaluepairs?also, it might have something to do with your serversettings

更新：这是一块code我用：

Update:this is a piece of code I use:

InputStream is = null;
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
    nameValuePairs.add(new BasicNameValuePair("lastupdate", lastupdate));

try {
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(connection);
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
        HttpResponse response = httpclient.execute(httppost);
        HttpEntity entity = response.getEntity();
        is = entity.getContent();
        Log.d("HTTP", "HTTP: OK");
    } catch (Exception e) {
        Log.e("HTTP", "Error in http connection " + e.toString());
    }

这篇关于在Android中使用的参数后使用的HttpClient和HttpPost的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！