Android图片异步上传到PHP服务器实例

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代码

2. $target_path = "./upload/" ; //接收文件目录
3. $target_path = $target_path . basename ( $_FILES [ 'uploadedfile' ][ 'name' ]);
4. if (move_uploaded_file( $_FILES [ 'uploadedfile' ][ 'tmp_name' ], $target_path )) {
5. echo "The file " . basename ( $_FILES [ 'uploadedfile' ][ 'name' ]). " has been uploaded" ;
6. } else {
7. echo "There was an error uploading the file, please try again!" . $_FILES [ 'uploadedfile' ][ 'error' ];
8. }
9. ?>

Android代码

上传的主要代码：

Java代码

1. private void uploadFile(String uploadUrl)
2. {
3. String end = "\r\n" ;
4. String twoHyphens = "--" ;
5. String boundary = "******" ;
6. try
7. {
8. URL url = new URL(uploadUrl);
9. HttpURLConnection httpURLConnection = (HttpURLConnection) url
10. .openConnection(); //http连接
11. // 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
13. httpURLConnection.setChunkedStreamingMode( 128 * 1024 ); // 128K
14. // 允许输入输出流
15. httpURLConnection.setDoInput( true );
16. httpURLConnection.setDoOutput( true );
17. httpURLConnection.setUseCaches( false );
18. // 使用POST方法
19. httpURLConnection.setRequestMethod( "POST" );
20. httpURLConnection.setRequestProperty( "Connection" , "Keep-Alive" ); //保持一直连接
21. httpURLConnection.setRequestProperty( "Charset" , "UTF-8" ); //编码
22. httpURLConnection.setRequestProperty( "Content-Type" ,
23. "multipart/form-data;boundary=" + boundary); //POST传递过去的编码
25. DataOutputStream dos = new DataOutputStream(
26. httpURLConnection.getOutputStream()); //输出流
27. dos.writeBytes(twoHyphens + boundary + end);
28. dos.writeBytes( "Content-Disposition: form-data; name=\"uploadedfile\"; filename=\""
29. + srcPath.substring(srcPath.lastIndexOf( "/" ) + 1 )
30. + "\""
31. + end);
32. dos.writeBytes(end);
34. FileInputStream fis = new FileInputStream(srcPath); //文件输入流，写入到内存中
35. byte [] buffer = new byte [ 8192 ]; // 8k
36. int count = 0 ;
37. // 读取文件
38. while ((count = fis.read(buffer)) != - 1 )
39. {
40. dos.write(buffer, 0 , count);
41. }
42. fis.close();
44. dos.writeBytes(end);
45. dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
46. dos.flush();
48. InputStream is = httpURLConnection.getInputStream(); //http输入，即得到返回的结果
49. InputStreamReader isr = new InputStreamReader(is, "utf-8" );
50. BufferedReader br = new BufferedReader(isr);
51. String result = br.readLine();
53. Toast.makeText( this , result, Toast.LENGTH_LONG).show(); //将结果输出
54. dos.close();
55. is.close();
57. } catch (Exception e)
58. {
59. e.printStackTrace();
60. setTitle(e.getMessage());
61. }
62. }

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：

Java代码

1. // Read file
2. bytesRead = fileInputStream.read(buffer, 0 , bufferSize);
4. while (bytesRead > 0 ) {
5. outputStream.write(buffer, 0 , bufferSize);
6. length += bufferSize;
7. progress = ( int ) ((length * 100 ) / totalSize);
8. publishProgress(progress);
10. bytesAvailable = fileInputStream.available();
11. bufferSize = Math.min(bytesAvailable, maxBufferSize);
12. bytesRead = fileInputStream.read(buffer, 0 , bufferSize);
13. }
14. outputStream.writeBytes(lineEnd);
15. outputStream.writeBytes(twoHyphens + boundary + twoHyphens
16. + lineEnd);
17. publishProgress( 100 );

还有就是，注意权限哟：

XML/HTML代码