com.jwebmp.plugins.blueimp.fileupload.servlets.AngularFileServlet Maven / Gradle / Ivy
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File Upload widget with multiple file selection, drag and drop support, progress bar, validation and preview images, audio and video for jQuery.
Supports cross-domain, chunked and resumable file uploads.
Works with any server-side platform (Google App Engine, PHP, Python, Ruby on Rails, Java, etc.) that supports standard HTML form file uploads.
/*
* Copyright (C) 2017 GedMarc
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see stringFileMap = new HashMap<>();
/**
* Constructs a new File Servlet
*/
public AngularFileServlet()
{
//Nothing Needed
}
@Override
@SuppressWarnings("unchecked")
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
{
AngularFileServlet.log.log(Level.INFO, "[SessionID]-[{0}];[Connection]-[Data Call Connection Established]", request.getSession()
.getId());
if (!ServletFileUpload.isMultipartContent(request))
{
AngularFileServlet.log.warning("File Upload is not a MultiPart, Incorrect servlet being hit");
return;
}
GuiceContext.get(DataCallInterceptorKey)
.forEach(DataCallIntercepter::intercept);
String rangeString = request.getHeader("Content-Range");
String rangeUpTo = rangeString.substring(rangeString.indexOf('-') + 1, rangeString.indexOf('/'));
String totalSize = rangeString.substring(rangeString.indexOf('/') + 1);
Long totalS = Long.parseLong(totalSize);
Long rangeTotal = Long.parseLong(rangeUpTo);
Long remaining = (totalS - 1) - rangeTotal;
boolean completed = false;
if (remaining == 0)
{
completed = true;
}
ServletFileUpload uploadHandler = new ServletFileUpload(new DiskFileItemFactory());
JsonFilesArray filesArray = new JsonFilesArray();
try
{
List items = uploadHandler.parseRequest(request);
for (FileItem item : items)
{
if (!item.isFormField())
{
processUploadedFile(completed, totalS, item, filesArray);
}
}
}
catch (FileUploadException e)
{
AngularFileServlet.log.log(Level.SEVERE, "File Upload Exception Occured : ", e);
}
catch (Exception e)
{
AngularFileServlet.log.log(Level.SEVERE, "Generic Exception on File Upload Occured : ", e);
}
finally
{
writeOutput(new StringBuilder(filesArray.toString()), "application/json", Charset.defaultCharset());
}
}
@Override
public void perform()
{
HttpServletRequest request = GuiceContext.get(GuicedServletKeys.getHttpServletRequestKey());
HttpServletResponse response = GuiceContext.get(GuicedServletKeys.getHttpServletResponseKey());
if (request.getParameter(AngularFileServlet.getFileMethod) != null && !request.getParameter(AngularFileServlet.getFileMethod)
.isEmpty())
{
processGetFile(request, response);
}
else if (request.getParameter(AngularFileServlet.deleteFileMethod) != null && !request.getParameter(AngularFileServlet.deleteFileMethod)
.isEmpty())
{
processDeleteFile(request);
}
else if (request.getParameter(AngularFileServlet.getThumbMethod) != null && !request.getParameter(AngularFileServlet.getThumbMethod)
.isEmpty())
{
processGetThumb(request, response);
}
}
private void processGetFile(HttpServletRequest request, HttpServletResponse response)
{
String filename = request.getParameter(AngularFileServlet.getFileMethod);
Set> intercepters = new HashSet(GuiceContext.instance().getScanResult()
.getSubclasses(OnGetFileInterceptor.class.getCanonicalName()).loadClasses());
if (intercepters == null || intercepters.isEmpty())
{
AngularFileServlet.log.warning(
"There are no file getter interceptors to catch this file get. Create a class that implements " + "OnGetFileInterceptor to deliver this file.");
}
else
{
intercepters.forEach(a ->
{
OnGetFileInterceptor obj = GuiceContext.get(a);
Pair is = obj.onGetFile(filename);
// String mimeType = new Tika().detect(is.getKey());
// response.setContentType(mimeType);
response.setHeader("Content-Disposition", "inline; filename=\"" + is.getKey() + "\"");
try
{
IOUtils.copyLarge(is.getValue(), response.getOutputStream());
is.getValue()
.close();
}
catch (IOException e)
{
AngularFileServlet.log.log(Level.SEVERE, "Unable to deliver file when input stream is transferred to output stream", e);
}
});
}
}
private void processDeleteFile(HttpServletRequest request)
{
String filename = request.getParameter(AngularFileServlet.deleteFileMethod);
Set> intercepters =new HashSet(GuiceContext.instance().getScanResult()
.getSubclasses(OnDeleteFileInterceptor.class.getCanonicalName()).loadClasses());
if (intercepters == null || intercepters.isEmpty())
{
AngularFileServlet.log.warning(
"There are no file delete interceptors to catch this file delete. Create a class that implements " + "OnDeleteFileInterceptor to delete this file.");
}
else
{
intercepters.forEach(a ->
{
OnDeleteFileInterceptor obj = GuiceContext.get(a);
obj.onDeleteFile(filename);
});
}
}
private void processGetThumb(HttpServletRequest request, HttpServletResponse response)
{
String filename = request.getParameter(AngularFileServlet.getThumbMethod);
Set> intercepters = new HashSet(GuiceContext.instance().getScanResult()
.getSubclasses(OnThumbnailFileInterceptor.class.getCanonicalName()).loadClasses());
if (intercepters == null || intercepters.isEmpty())
{
AngularFileServlet.log.warning(
"There are no file get thumbnail interceptors to catch this file thumbnail. Create a class that implements " +
"OnThumbnailFileInterceptor to deliver the thumbnail.");
}
else
{
intercepters.forEach(a ->
{
OnThumbnailFileInterceptor obj = GuiceContext.get(a);
Pair is = obj.onThumbnailGet(filename);
//String mimeType = new Tika().detect(is.getKey());
response.setContentType("application/json");
response.setHeader("Content-Disposition", "inline; filename=\"" + is.getKey() + "\"");
try
{
IOUtils.copyLarge(is.getValue(), response.getOutputStream());
is.getValue()
.close();
}
catch (IOException e)
{
AngularFileServlet.log.log(Level.SEVERE, "Unable to deliver file when input stream is transferred to output stream", e);
}
});
}
}
private void processUploadedFile(boolean completed, Long totalS, FileItem item, JsonFilesArray filesArray) throws IOException
{
String fileUploadIdentifier = item.getName() + "|" + totalS + "|" + item.getFieldName();
if (!AngularFileServlet.stringFileMap.containsKey(fileUploadIdentifier))
{
File tempFile = File.createTempFile("jwebswing_fileUpload_", "-ul");
AngularFileServlet.stringFileMap.put(fileUploadIdentifier, tempFile);
}
File tempFile = AngularFileServlet.stringFileMap.get(fileUploadIdentifier);
if (!completed)
{
FileUtils.writeByteArrayToFile(tempFile, item.get(), true);
}
else
{
JsonFile file = new JsonFile();
file.setName(item.getName());
file.setSize(tempFile.length());
try (FileInputStream fis = new FileInputStream(tempFile))
{
file.setContent(fis);
file.setType(item.getContentType());
file.setDownloadUrl(SessionHelper.getServerPath() + BlueImpFileUploadBinderGuiceSiteBinder.BLUEIMP_FILEUPLOAD_SERVLETURL + "?getfile=" + item.getName());
file.setThumbnailUrl(SessionHelper.getServerPath() + BlueImpFileUploadBinderGuiceSiteBinder.BLUEIMP_FILEUPLOAD_SERVLETURL + "?getthumb=" + item.getName());
file.setDeleteUrl(SessionHelper.getServerPath() + BlueImpFileUploadBinderGuiceSiteBinder.BLUEIMP_FILEUPLOAD_SERVLETURL + "?delfile=" + item.getName());
filesArray.getAllFiles()
.add(file);
Set> intercepters = new HashSet(GuiceContext.instance().getScanResult()
.getSubclasses(OnFileUploadInterceptor.class.getCanonicalName()).loadClasses());
if (intercepters == null || intercepters.isEmpty())
{
AngularFileServlet.log.warning(
"There are no file upload interceptors to catch this file upload. Create a class that implements " + "OnFileUploadInterceptor to use this file.");
}
else
{
intercepters.forEach(a ->
{
OnFileUploadInterceptor obj = GuiceContext.get(a);
obj.onUploadCompleted(file);
});
}
}
if (!tempFile.delete())
{
AngularFileServlet.log.warning("Unable to delete temporary file : " + tempFile);
}
AngularFileServlet.stringFileMap.remove(fileUploadIdentifier);
}
}
}
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