Question

我正在尝试从我的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

<?php

 $target_path = "uploads/";

 $target_path = $target_path . basename( $_FILES['uploadedfile']['name']);

 if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
echo "The file ". basename( $_FILES['uploadedfile']['name']).
    " has been uploaded";
 } 

 else{
      echo "There was an error uploading the file, please try again!";
   }
   ?>

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

Answer 1

服务器似乎没有响应客户端。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？

Answer 2

按以下方式更改代码以获取正确的转义序列：

替换

String lineEnd = "rn";

带

String lineEnd = "\r\n";

将图片从Android上传到PHP服务器

2 个答案: