我正在分享解决方案以发送图片，音频或视频文件使用 HttpURLConnection 的参数。参数可以是（普通字符串或JSON）。
（Android客户端到PHP后端）
方案： 必须上传媒体文件（带参数的音频，视频和图像）。
媒体文件将存储在服务器文件夹中，参数将存储在db。
中我遇到了一个问题，图片上传成功，而参数缺失。
找到潜在的解决方案
选择 HttpURLConnection 而不是 Httpclient 作为recommend here
您可能想知道，哪个客户最好？
Apache HTTP客户端在Eclair和Froyo上的错误更少。这是这些版本的最佳选择。
对于Gingerbread而言，更好的是，HttpURLConnection是最佳选择。其简单的API和小巧的尺寸使其非常适合Android。透明压缩和响应缓存可减少网络使用，提高速度并节省电池电量。新的应用程序应该使用HttpURLConnection;这是我们将继续投入精力的地方。
Android代码：
public int uploadFile(final String sourceFileUri) {
String fileName = sourceFileUri;
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File sourceFile = new File(sourceFileUri);
if (!sourceFile.isFile()) {
dialog.dismiss();
Log.e("uploadFile", "Source File not exist :" + filepath);
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("Source File not exist :" + filepath);
}
});
return 0;
} else {
try {
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(upLoadServerUri);
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
// conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type","multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uploaded_file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
//Adding Parameter name
String name="amir";
dos.writeBytes("Content-Disposition: form-data; name=\"name\"" + lineEnd);
//dos.writeBytes("Content-Type: text/plain; charset=UTF-8" + lineEnd);
//dos.writeBytes("Content-Length: " + name.length() + lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(name); // mobile_no is String variable
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
//Adding Parameter phone
String phone="9956565656";
dos.writeBytes("Content-Disposition: form-data; name=\"phone\"" + lineEnd);
//dos.writeBytes("Content-Type: text/plain; charset=UTF-8" + lineEnd);
//dos.writeBytes("Content-Length: " + name.length() + lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(phone); // mobile_no is String variable
dos.writeBytes(lineEnd);
//Json_Encoder encode=new Json_Encoder();
//call to encode method and assigning response data to variable 'data'
//String data=encode.encod_to_json();
//response of encoded data
//System.out.println(data);
//Adding Parameter filepath
dos.writeBytes(twoHyphens + boundary + lineEnd);
String filepath="http://192.168.1.110/echo/uploads"+fileName;
dos.writeBytes("Content-Disposition: form-data; name=\"filepath\"" + lineEnd);
//dos.writeBytes("Content-Type: text/plain; charset=UTF-8" + lineEnd);
//dos.writeBytes("Content-Length: " + name.length() + lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(filepath); // mobile_no is String variable
dos.writeBytes(lineEnd);
//Adding Parameter media file(audio,video and image)
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+ fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// 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);
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : "+ serverResponseMessage + ": " + serverResponseCode);
if (serverResponseCode == 200) {
runOnUiThread(new Runnable() {
public void run() {
msg = "File Upload Completed.\n\n See uploaded file here : \n\n"
+ "c:/wamp/www/echo/uploads";
messageText.setText(msg);
Toast.makeText(MainActivity.this,
"File Upload Complete.", Toast.LENGTH_SHORT)
.show();
}
});
}
// close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
dialog.dismiss();
ex.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
messageText
.setText("MalformedURLException Exception : check script url.");
Toast.makeText(MainActivity.this,
"MalformedURLException", Toast.LENGTH_SHORT)
.show();
}
});
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (final Exception e) {
dialog.dismiss();
e.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("Got Exception : "+e.toString());
Toast.makeText(MainActivity.this,
"Got Exception : see logcat ",
Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server Exception",
"Exception : " + e.getMessage(), e);
}
dialog.dismiss();
return serverResponseCode;
}
}
Php代码：
$file_path = "uploads/";
//receive parameters
$name=$_POST['name'];
$phone=$_POST['phone'];
$filepath=$_POST['filepath'];
//receive media files(image , audio and video)
$file_path = $file_path . basename( $_FILES['uploaded_file']['name']);
if(move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $file_path))
{
echo "Success";
}
希望这有帮助。
有任何疑问都会问我。
答案 0 :(得分：1)
您可以使用Retrofit进行API调用。 Android的最低支持是2.3。请查看详细信息。
答案 1 :(得分：0)
你可以让它更简单！请尝试以下方法。
public static String uploadImage(Bitmap bitmap, String urlString) {
try {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap = Local.resize(bitmap, 512, 512);
if(filename.toLowerCase().endsWith("jpg") || filename.toLowerCase().endsWith("jpeg"))
bitmap.compress(Bitmap.CompressFormat.JPEG, 70, bos);
if(filename.toLowerCase().endsWith("png"))
bitmap.compress(Bitmap.CompressFormat.PNG, 70, bos);
ContentBody contentPart = new ByteArrayBody(bos.toByteArray(), filename);
ContentBody body1 = new StringBody("something");
ContentBody body2 = new StringBody("something");
org.apache.http.entity.mime.MultipartEntity reqEntity = new org.apache.http.entity.mime.MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
reqEntity.addPart("image", contentPart);
reqEntity.addPart("sample1", body1);
reqEntity.addPart("sample2", body2);
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(10000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setUseCaches(false);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestProperty("Connection", "Keep-Alive");
conn.addRequestProperty("Content-length", reqEntity.getContentLength()+"");
conn.addRequestProperty(reqEntity.getContentType().getName(), reqEntity.getContentType().getValue());
OutputStream os = conn.getOutputStream();
reqEntity.writeTo(conn.getOutputStream());
os.close();
conn.connect();
if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
Log.d("UPLOAD", "HTTP 200 OK.");
return readStream(conn.getInputStream());
//This return returns the response from the upload.
} else {
Log.d("UPLOAD", "HTTP "+conn.getResponseCode()+" "+conn.getResponseMessage()+".");
String stream = readStream(conn.getInputStream());
//Log.d("UPLOAD", "Response: "+stream);
return stream;
}
} catch (Exception e) {
Log.d("UPLOAD_ERROR", "Multipart POST Error: " + e + "(" + urlString + ")");
}
return null;
}