Question

我需要帮助发送http get请求。像这样：

URL connectURL;
connectURL = new URL(address);
HttpURLConnection conn = (HttpURLConnection)connectURL.openConnection(); 
// do some setup
conn.setDoInput(true); 
conn.setDoOutput(true); 
conn.setUseCaches(false); 
conn.setRequestMethod("GET"); 
// connect and flush the request out
conn.connect();
conn.getOutputStream().flush();
// now fetch the results
String response = getResponse(conn);
et.setText(response);

我在网上搜索但是我尝试的任何方法，代码都在'conn.connect();'失败了。有线索吗？

Answer 1

如果没有实际的错误消息，很难说清楚。随机想一想：你是否向你提供了互联网许可证？

 <uses-permission android:name="android.permission.INTERNET"/>

Answer 2

如果您想要一些demo code，请尝试以下操作：

 URL url = new URL("url.com");
   HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
   try {
     InputStream in = new BufferedInputStream(urlConnection.getInputStream());
     readStream(in);
   } finally {
     urlConnection.disconnect();
   }

和此：

   HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
   try {
     urlConnection.setDoOutput(true);
     urlConnection.setChunkedStreamingMode(0);

     OutputStream out = new BufferedOutputStream(urlConnection.getOutputStream());
     writeStream(out);

     InputStream in = new BufferedInputStream(urlConnection.getInputStream());
     readStream(in);
   } finally {
     urlConnection.disconnect();
   }

希望这有帮助。

Http在Android中获取请求

2 个答案: