Android -- 图片异步上传到PHP服务器

背景                                                                                          

网上很多上传到java服务器上的，找了好久，找到了上传到php的了，思路跟我当初想的差不多，就是POST过去。废话不多说，直接上图看代码。

php代码                                                                                    

<?php

$target_path  = "./upload/";//接收文件目录

$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!" . $_FILES[‘uploadedfile‘][‘error‘];

}

?>

Android代码                                                                              

上传的主要代码：

private void uploadFile(String uploadUrl)

  {

    String end = "\r\n";

    String twoHyphens = "--";

    String boundary = "******";

    try

    {

      URL url = new URL(uploadUrl);

      HttpURLConnection httpURLConnection = (HttpURLConnection) url

          .openConnection();//http连接

      // 设置每次传输的流大小，可以有效防止手机因为内存不足崩溃

      // 此方法用于在预先不知道内容长度时启用没有进行内部缓冲的 HTTP 请求正文的流。

      httpURLConnection.setChunkedStreamingMode(128 * 1024);// 128K

      // 允许输入输出流

      httpURLConnection.setDoInput(true);

      httpURLConnection.setDoOutput(true);

      httpURLConnection.setUseCaches(false);

      // 使用POST方法

      httpURLConnection.setRequestMethod("POST");

      httpURLConnection.setRequestProperty("Connection", "Keep-Alive");//保持一直连接

      httpURLConnection.setRequestProperty("Charset", "UTF-8");//编码

      httpURLConnection.setRequestProperty("Content-Type",

          "multipart/form-data;boundary=" + boundary);//POST传递过去的编码

DataOutputStream dos = new DataOutputStream(

          httpURLConnection.getOutputStream());//输出流

      dos.writeBytes(twoHyphens + boundary + end);

      dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\"; filename=\""

          + srcPath.substring(srcPath.lastIndexOf("/") + 1)

          + "\""

          + end);

      dos.writeBytes(end);
FileInputStream fis = new FileInputStream(srcPath);//文件输入流，写入到内存中

      byte[] buffer = new byte[8192]; // 8k

      int count = 0;

      // 读取文件

      while ((count = fis.read(buffer)) != -1)

      {

        dos.write(buffer, 0, count);

      }

      fis.close();
dos.writeBytes(end);

      dos.writeBytes(twoHyphens + boundary + twoHyphens + end);

      dos.flush();
InputStream is = httpURLConnection.getInputStream();//http输入，即得到返回的结果

      InputStreamReader isr = new InputStreamReader(is, "utf-8");

      BufferedReader br = new BufferedReader(isr);

      String result = br.readLine();
Toast.makeText(this, result, Toast.LENGTH_LONG).show();//将结果输出

      dos.close();

      is.close();
} catch (Exception e)

    {

      e.printStackTrace();

      setTitle(e.getMessage());

    }

  }

因为安卓4.0之后耗时间的操作要求都在非UI线程中操作，即将前面的AsyncTask拿来用了吧~

AsyncTask传送门：http://www.cnblogs.com/yydcdut/p/3707960.html

在这个类中，将上传的操作放在doInBackground当中，可以有ProgressDialog显示上传了多少：

// Read file

            bytesRead = fileInputStream.read(buffer, 0, bufferSize);

while (bytesRead > 0) {

                outputStream.write(buffer, 0, bufferSize);

                length += bufferSize;

                progress = (int) ((length * 100) / totalSize);

                publishProgress(progress);
bytesAvailable = fileInputStream.available();

                bufferSize = Math.min(bytesAvailable, maxBufferSize);

                bytesRead = fileInputStream.read(buffer, 0, bufferSize);

            }

            outputStream.writeBytes(lineEnd);

            outputStream.writeBytes(twoHyphens + boundary + twoHyphens

                    + lineEnd);

            publishProgress(100);

还有就是，注意权限哟：

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

我是天王盖地虎的分割线                                                                 

源代码：http://pan.baidu.com/s/1dD1Qx01

Update.zip

参考：http://blog.csdn.net/sxwyf248/article/details/7012496

转载请注明出处：http://www.cnblogs.com/yydcdut/p/3720635.html