将图片从Android上传到PHP服务器
我试图从我的Android设备上传文件到PHP服务器。 有相同问题的线程，但他使用不同的方法。 我的Android端代码工作正常，没有显示错误消息，但服务器没有收到任何文件。 这是我的示例代码，我在网上找到了它。
import java.io.FileInputStream; import android.app.Activity; import android.os.Bundle; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.File; import java.io.IOException; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import android.util.Log; public class uploadfile extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); doFileUpload(); } private void doFileUpload(){ HttpURLConnection conn = null; DataOutputStream dos = null; DataInputStream inStream = null; String exsistingFileName = "/sdcard/def.jpg"; // Is this the place are you doing something wrong. String lineEnd = "rn"; String twoHyphens = "--"; String boundary = "*****"; int bytesRead, bytesAvailable, bufferSize; byte[] buffer; int maxBufferSize = 1*1024*1024; String responseFromServer = ""; String urlString = "http://192.168.1.6/index.php"; try { //------------------ CLIENT REQUEST Log.e("MediaPlayer","Inside second Method"); FileInputStream fileInputStream = new FileInputStream(new File(exsistingFileName) ); // open a URL connection to the Servlet URL url = new URL(urlString); // Open a HTTP connection to the URL conn = (HttpURLConnection) url.openConnection(); // Allow Inputs conn.setDoInput(true); // Allow Outputs conn.setDoOutput(true); // Don't use a cached copy. conn.setUseCaches(false); // Use a post method. conn.setRequestMethod("POST"); conn.setRequestProperty("Connection", "Keep-Alive"); conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary); dos = new DataOutputStream( conn.getOutputStream() ); dos.writeBytes(twoHyphens + boundary + lineEnd); dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + exsistingFileName + "\"" + lineEnd); dos.writeBytes(lineEnd); Log.e("MediaPlayer","Headers are written"); // create a buffer of maximum size bytesAvailable = fileInputStream.available(); bufferSize = Math.min(bytesAvailable, maxBufferSize); buffer = new byte[bufferSize]; // read file and write it into form... bytesRead = fileInputStream.read(buffer, 0, bufferSize); while (bytesRead > 0){ dos.write(buffer, 0, bufferSize); bytesAvailable = fileInputStream.available(); bufferSize = Math.min(bytesAvailable, maxBufferSize); bytesRead = fileInputStream.read(buffer, 0, bufferSize); } // send multipart form data necesssary after file data... dos.writeBytes(lineEnd); dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); // close streams Log.e("MediaPlayer","File is written"); fileInputStream.close(); dos.flush(); dos.close(); } catch (MalformedURLException ex) { Log.e("MediaPlayer", "error: " + ex.getMessage(), ex); } catch (IOException ioe) { Log.e("MediaPlayer", "error: " + ioe.getMessage(), ioe); } //------------------ read the SERVER RESPONSE try { inStream = new DataInputStream ( conn.getInputStream() ); String str; while (( str = inStream.readLine()) != null) { Log.e("MediaPlayer","Server Response"+str); } inStream.close(); } catch (IOException ioex){ Log.e("MediaPlayer", "error: " + ioex.getMessage(), ioex); } } } 我的php服务器端代码如下
Apache正在运行。 当我运行服务器时，出现此错误消息上传文件时出错，请再试一次！ 我已经检查了eclipse中的日志数据以及我认为套接字问题，但我不确定。 如果有人知道解决方案，请帮忙。
11-28 05:37:55.310: DEBUG/SntpClient(59): request time failed: java.net.SocketException: Address family not supported by protocol
似乎服务器没有响应客户端。 尝试通过Android应用程序使用ftp连接进行上传，如果可行则在接受连接和可写目录时检查Apache配置。 当我遇到类似的问题时，我发现我的目录没有写入权限。
是来自Java还是来自Apache的错误？
以下列方式更改代码以获取正确的转义序列：
更换
String lineEnd = "rn";
同
String lineEnd = "\r\n";