编辑完全重新处理问题以更好地理解
我必须使用 2 个 POST 参数查询给定的 url
http://api.bf3stats.com/pc/player/
:“player”(用于玩家名称)和“opt”(用于选项)。我已经在 http://www.requestmaker.com/ 上对其进行了测试,数据如下:player=Zer0conf&opt=all
。我得到了正确的 JSON 响应(我想我不知道他们的网站如何执行查询,我猜是 php)。现在我正在尝试在 Android 中做同样的事情:
private StringBuilder inputStreamToString(InputStream is) {
//this method converts an inputStream to String representation
String line = "";
StringBuilder total = new StringBuilder();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
try {
while ((line = rd.readLine()) != null) {
total.append(line);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return total;
}
这就是我提出请求的方式:
public void postData(String url, String name) {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
//qname is a String containing a correct player name
nameValuePairs.add(new BasicNameValuePair("player", qname));
nameValuePairs.add(new BasicNameValuePair("opt", "all"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
//test is just a string to check the result, which should be in JSON format
test = inputStreamToString(response.getEntity().getContent())
.toString();
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
}
我在“test”字符串中得到的不是 JSON,而是某些 bf3stats 页面的完整 HTML 标记。我的请求可能有什么问题?
您需要在请求标头中为要发送的数据类型设置内容类型
"application/x-www-form-urlencoded"
。
我针对上述数据测试了您的 API,它工作正常,并且我收到了大量数据作为响应。您可以在这里找到它。
您可以尝试以下代码:
public String postDataToServer(String url) throws Throwable
{
HttpPost request = new HttpPost(url);
StringBuilder sb=new StringBuilder();
String requestData = prepareRequest();
StringEntity entity = new StringEntity(requestData);
entity.setContentType("application/x-www-form-urlencoded;charset=UTF-8");//text/plain;charset=UTF-8
request.getParams().setParameter(CoreProtocolPNames.USE_EXPECT_CONTINUE, Boolean.FALSE);
request.setHeader("Accept", "application/json");
request.setEntity(entity);
// Send request to WCF service
HttpResponse response =null;
DefaultHttpClient httpClient = new DefaultHttpClient();
//DefaultHttpClient httpClient = getNewHttpClient();
HttpConnectionParams.setSoTimeout(httpClient.getParams(), 10*1000);
HttpConnectionParams.setConnectionTimeout(httpClient.getParams(),10*1000);
try{
response = httpClient.execute(request);
}
catch(SocketException se)
{
Log.e("SocketException", se+"");
throw se;
}
/* Patch to prevent user from hitting the request twice by clicking
* the view [button, link etc] twice.
*/
finally{
}
InputStream in = response.getEntity().getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String line = null;
while((line = reader.readLine()) != null){
sb.append(line);
}
Log.d("response in Post method", sb.toString()+"");
return sb.toString();
}
public String prepareRequest()
{
return "player=Zer0conf&opt=all";
}
编辑: 我的 Web 服务出现错误 期望失败错误 - 417。所以我们需要在请求中添加一个参数。是
request.getParams().setParameter(CoreProtocolPNames.USE_EXPECT_CONTINUE, Boolean.FALSE);
。我已经用这个更新了上面的代码。现在效果很好。
响应看起来像这样。
尝试在浏览器中查看url,我相信有一个!DOCTYPE声明,它肯定无法解析为JSON对象。