我正在进行图像比较项目,我从URL下载图像并将其与先前存储在我的Android移动设备上的图像进行比较。 首先,我将用户的图像注册为字节数组,然后将图像发送到服务器以便以后下载。
下载部分没有问题。我手动将字节数组图像文件从手机文件夹复制到服务器文件夹,然后下载相同的文件,它与现有图像匹配。但问题是上传部分,文件上传到服务器文件夹,但它与现有文件不匹配。 我的文件内容没有正确上传,但我不确定。
请分享从android到jersey的上传字节数组图像的任何来源。
我在这里分享了我的上传代码供您考虑。
try {
// open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(upLoadThumprintUri);
// 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
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);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""
+ name + "\"" + 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);
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
//String serverResponseMessage = conn.getResponseMessage();
//Log.i("uploadFile", "HTTP Response is : " + serverResponseMessage + ": " + serverResponseCode);
if (serverResponseCode == 200) {
runOnUiThread(new Runnable() {
public void run()
{
runOnUiThread(new Runnable() {
public void run() {
String msg = "File Upload Completed.\n\n See uploaded file here : \n\n" + " serverpath"
+ uploadFileName;
mTxtMessage.setText(msg);
}
});
}
});
}
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
//dialog.dismiss();
ex.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
mTxtMessage.setText("MalformedURLException Exception : check script url.");
}
});
} catch (Exception e) {
runOnUiThread(new Runnable() {
public void run() {
Log.e("Upload file to server", "Got exception=====: ");
}
});
}
我的服务器代码:
@POST
@Path("/TEMPLATE")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadTemplateFile(@FormDataParam("uploaded_file") InputStream is,
@FormDataParam("uploaded_file") FormDataContentDisposition formData) throws IOException
{
String fileLocation=formData.getFileName();
String location="C:/Applications/Images";
System.out.println("file name=="+fileLocation);
BufferedReader br=new BufferedReader(new InputStreamReader(is));
String line="";
ArrayList list = new ArrayList();
try {
while((line=br.readLine())!=null)
{
System.out.println(line);
list.add(line);
}
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println(list);
String a[]=new String[list.size()];
System.out.println(list.size() +"::"+ a.length);
File dir = new File(location);
if (!dir.exists()) {
dir.mkdirs();
}
File txtFile = new File(dir, fileLocation);
FileWriter fw=null;
try {
fw = new FileWriter(txtFile,true);
for(int i=0;i<a.length;i++)
{
a[i] = list.get(i).toString();
fw.append(a[i]);
fw.append("\r\n");
}
//fw.write(line);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally
{
try {
fw.flush();
fw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return Response.status(Status.OK).entity(line).build();
}
先谢谢。