public static String fileUploadFromPath(String url, String path) throws Throwable {
System.out.println("IN fileUploadFromPath ");
String responseData = "";
String NL = System.getProperty("line.separator");
try {
System.out.println("url ************ " + url);
File file = new File(path);
System.out.println("file ************ " + file.getAbsolutePath()
+ " : " + file.exists());
StringBuilder text = new StringBuilder();
if (file.exists()) {
BufferedReader br = new BufferedReader(new FileReader(file));
String line;
while ((line = br.readLine()) != null) {
text.append(line);
text.append(NL);
}
HttpClient httpClient = new DefaultHttpClient();
HttpPost postRequest = new HttpPost(url);
// System.out.println("postRequest ************ " +
// postRequest);
MultipartEntity multipartContent = new MultipartEntity();
ByteArrayBody key = new ByteArrayBody(text.toString()
.getBytes(), AgricultureUtils.getInstance()
.getTimeStamp() + ".3gp");
multipartContent.addPart(AgricultureUtils.getInstance()
.getTimeStamp() + ".3gp", key);
postRequest.setEntity(multipartContent);
HttpResponse response = httpClient.execute(postRequest);
BufferedReader in = new BufferedReader(new InputStreamReader(
response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String content = "";
while ((content = in.readLine()) != null) {
sb.append(content + NL);
}
in.close();
/*
* File myDir = new File(Constants.dirctory); if
* (!myDir.exists()) { myDir.mkdirs(); } File myFile = new
* File(myDir, fileName); FileOutputStream mFileOutStream = new
* FileOutputStream(myFile);
* mFileOutStream.write(sb.toString().getBytes());
* mFileOutStream.flush(); mFileOutStream.close();
*/
System.out.println("response " + sb);
}
} catch (Throwable e) {
System.out.println("Exception In Webservice ----- " + e);
throw e;
}
return responseData;
}
我想将音频文件上传到服务器。
我可以通过上面的代码将音频文件上传到服务器，但文件无效（不在系统中播放）。如果您有任何想法，请帮助我。
答案 0 :(得分：1)
您在这里既不使用FileReader也不使用StringBuilder，因为它将数据视为字符（根据默认系统字符集编码）。实际上，您根本不应该使用Reader。二进制数据应通过InputStream处理，例如
final ByteArrayOutputStream out = new ByteArrayOutputStream();
try (final InputStream in = new FileInputStream(file)) {
final byte[] buf = new byte[2048];
int n;
while ((n = in.read(buf)) >= 0) {
out.write(buf, 0, n);
}
}
final byte[] data = out.toByteArray();
答案 1 :(得分：0)
你检查过服务器上的校验和吗？是未经修改的吗？
如果没有，请尝试其他方法发布文件。这个对我帮助很大：
/**
* Post request (upload files)
* @param sUrl
* @param params Form data
* @param files
* @return
*/
public static HttpData post(String sUrl, Hashtable<String, String> params, ArrayList<File> files) {
HttpData ret = new HttpData();
try {
String boundary = "*****************************************";
String newLine = "rn";
int bytesAvailable;
int bufferSize;
int maxBufferSize = 4096;
int bytesRead;
URL url = new URL(sUrl);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false);
con.setRequestMethod("POST");
con.setRequestProperty("Connection", "Keep-Alive");
con.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
DataOutputStream dos = new DataOutputStream(con.getOutputStream());
//dos.writeChars(params);
//upload files
for (int i=0; i<files.size(); i++) {
Log.i("HREQ", i+"");
FileInputStream fis = new FileInputStream(files.get(i));
dos.writeBytes("--" + boundary + newLine);
dos.writeBytes("Content-Disposition: form-data; "
+ "name="file_"+i+"";filename=""
+ files.get(i).getPath() +""" + newLine + newLine);
bytesAvailable = fis.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
byte[] buffer = new byte[bufferSize];
bytesRead = fis.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fis.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fis.read(buffer, 0, bufferSize);
}
dos.writeBytes(newLine);
dos.writeBytes("--" + boundary + "--" + newLine);
fis.close();
}
// Now write the data
Enumeration keys = params.keys();
String key, val;
while (keys.hasMoreElements()) {
key = keys.nextElement().toString();
val = params.get(key);
dos.writeBytes("--" + boundary + newLine);
dos.writeBytes("Content-Disposition: form-data;name=""
+ key+""" + newLine + newLine + val);
dos.writeBytes(newLine);
dos.writeBytes("--" + boundary + "--" + newLine);
}
dos.flush();
BufferedReader rd = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String line;
while ((line = rd.readLine()) != null) {
ret.content += line + "rn";
}
//get headers
Map<String, List<String>> headers = con.getHeaderFields();
Set<Entry<String, List<String>>> hKeys = headers.entrySet();
for (Iterator<Entry<String, List<String>>> i = hKeys.iterator(); i.hasNext();) {
Entry<String, List<String>> m = i.next();
Log.w("HEADER_KEY", m.getKey() + "");
ret.headers.put(m.getKey(), m.getValue().toString());
if (m.getKey().equals("set-cookie"))
ret.cookies.put(m.getKey(), m.getValue().toString());
}
dos.close();
rd.close();
} catch (MalformedURLException me) {
} catch (IOException ie) {
} catch (Exception e) {
Log.e("HREQ", "Exception: "+e.toString());
}
return ret;
}
取自：
http://moazzam-khan.com/blog/?p=490
检查链接的依赖关系和用法。