我想实现一些代码，它完全按照我在Mac终端中执行CURL命令时完成的操作，即将.wav文件上传到服务器。 我之前已经为一台服务器完成了这个，所以我的一般思维工作（我的代码也是）， ....但现在我想在不同的服务器上完成相同的工作。 这次我遇到了麻烦，我得到的只是＆＃34; 400：Bad Request＆＃34;
这是他想在Android上做的CURL命令，我添加了一个＆＃34; -v＆＃34;所以你可以看到我的命令的详细信息。
curl -F file=@audio_life.wav 11.2.333.44:14141/transcribe -v
终端输出日志：
* Trying 11.2.333.44...
* Connected to 11.2.333.44 (11.2.333.44) port 14141 (#0)
> POST /transcribe HTTP/1.1
> Host: 11.2.333.44:14141
> User-Agent: curl/7.43.0
> Accept: */*
> Content-Length: 304898
> Expect: 100-continue
> Content-Type: multipart/form-data; boundary=------------------------62142b52672c69e0
>
* Done waiting for 100-continue
< HTTP/1.1 201 Created
< Content-Type: application/json
< Content-Length: 915
这是我的代码，我总是得到400：错误的请求响应，因为你可以看到我试图复制标题。我究竟做错了什么？我怎样才能了解错误可能是什么？
String wavpath=Environment.getExternalStorageDirectory().getAbsolutePath()+"/ArtificialSolutions/"+StorageUtils.AUDIO_FILE_NAME+".wav";
File wavfile = new File(wavpath);
FileInputStream fileInputStream = new FileInputStream(wavpath);
connectURL = new URL(ASR_URL_VOCITEC);
String filevalue = StorageUtils.AUDIO_FILE_NAME+".wav";
HttpURLConnection conn = (HttpURLConnection)connectURL.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Host","11.2.333.44:14141");
conn.setRequestProperty("User-Agent", "android");
conn.setRequestProperty("Accept","*/*");
conn.setRequestProperty("Transfer-Encoding", "chunked");
conn.setRequestProperty("Expect", "100-continue");
conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=------------------------f016e997e308ec07");//+boundary);
DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"File\""+ lineEnd);
//dos.writeBytes("Content-Disposition: form-data; File=\""+wavpath+"\""+ lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(wavpath);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
int bytesAvailable = fileInputStream.available();
int maxBufferSize = 1024;
int bufferSize = Math.min(bytesAvailable, maxBufferSize);
byte[ ] buffer = new byte[bufferSize];
int bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0){
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
Log.e("joshtag","BytesAvailable: "+bytesAvailable);
bufferSize = Math.min(bytesAvailable,maxBufferSize);
if(bytesAvailable>maxBufferSize){
bytesRead = fileInputStream.read(buffer, 0,bufferSize);
}
else{
bytesRead = fileInputStream.read(buffer, 0,bytesAvailable);
dos.write(buffer, 0, bytesAvailable);
break;
}
}
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
fileInputStream.close();//63532 , 64556
dos.flush();
Log.e(Tag,"File Sent, Response: "+String.valueOf(conn.getResponseCode()));
Log.e(Tag,"File Sent, ResponseMSG: "+String.valueOf(conn.getResponseMessage()));
这是我从服务器回来的消息的打印输出：
{null=[HTTP/1.1 400 Bad Request], Content-Length=[42], Content-Type=[text/plain], X-Android-Received-Millis=[1449836192887], X-Android-Response-Source=[NETWORK 400], X-Android-Sent-Millis=[1449836192719]}
注意：我根据我的知识对此进行了编码，在查看StartOverflow上的相关帖子之后，整个代码都位于AsyncTask的doInBackground方法中，因此我们将重点放在此处。我希望可以帮助我!!感谢。
答案 0 :(得分：1)
在对代码进行了大量调整之后，我找到了一种使用URLConnection上传wav文件并使用multipartentity的方法。这是代码，享受：
public int uploadWav(String sourceFileUri) {
String wavpath=Environment.getExternalStorageDirectory().getAbsolutePath()+"/myAppFolder/"+StorageUtils.AUDIO_FILE_NAME+".wav";
String filename=wavpath;
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "------------------------afb19f4aeefb356c";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File sourceFile = new File(fileName);
Log.e("joshtag", "Uploading: sourcefileURI, "+fileName);
if (!sourceFile.isFile()) {
Log.e("uploadFile", "Source File not exist :"+wavpath);//FullPath);
return 0; //RETURN #1
}
else{
try{
Log.v("joshtag","UPLOADING .WAV FILE");
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(SERVER_URL);
Log.v("joshtag","UL URL: "+url.toString());
// Open a HTTP connection to the URL
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy s
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("file", sourceFile.getName());
//so on and so forth...
//conn.setRequestProperty("param", "value");
conn.setRequestProperty("connection", "close");
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"file\";filename=\"" + sourceFile.getName() + "\"" + 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);
Log.i("joshtag","->");
}
Log.i("joshtag","->->");
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
conn.connect();
Log.i("joshtag","->->->");
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
Log.i("joshtag","->->->->");
String serverResponseMessage = conn.getResponseMessage().toString();
Log.i("joshtag","->->->->->");
Log.i("joshtag", "HTTP Response is : " + serverResponseMessage + ": " + serverResponseCode);
// ------------------ read the SERVER RESPONSE
DataInputStream inStream;
String str="";
String response="";
try {
Log.i("joshtag","->->->->->->");
inStream = new DataInputStream(conn.getInputStream());
while ((str = inStream.readLine()) != null) {
Log.e("joshtag", "SOF Server Response" + str);
response=str;
}
inStream.close();
}
catch (IOException ioex) {
Log.e("joshtag", "SOF error: " + ioex.getMessage(), ioex);
}
conn.disconnect();
conn=null;
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
if(serverResponseCode == 201){
loge("*** SERVER RESPONSE: 201"+response);
}//END IF Response code 201
// conn.disconnect();
}//END TRY - FILE READ
catch (MalformedURLException ex) {
ex.printStackTrace();
Log.e("joshtag", "UL error: " + ex.getMessage(), ex);
} //CATCH - URL Exception
catch (Exception e) {
e.printStackTrace();
Log.e("Upload file to server Exception", "Exception : "+ e.getMessage(), e);
}
return serverResponseCode; //after try
}//END ELSE, if file exists.
}