/**
* Parses the input stream and partitions the parsed items into a set of form fields and a set of
* file items.
*
* @param request The multipart request wrapper.
* @param servletContext Our ServletContext object
* @return multipart processed request
* @throws HdivMultipartException if an unrecoverable error occurs.
*/
public HttpServletRequest handleMultipartRequest(
RequestWrapper request, ServletContext servletContext) throws HdivMultipartException {
DiskFileUpload upload = new DiskFileUpload();
upload.setHeaderEncoding(request.getCharacterEncoding());
// Set the maximum size before a FileUploadException will be thrown.
upload.setSizeMax(getSizeMax());
// Set the maximum size that will be stored in memory.
upload.setSizeThreshold((int) getSizeThreshold());
// Set the the location for saving data on disk.
upload.setRepositoryPath(getRepositoryPath(servletContext));
List<FileItem> items = null;
try {
items = upload.parseRequest(request);
} catch (DiskFileUpload.SizeLimitExceededException e) {
if (log.isErrorEnabled()) {
log.error("Size limit exceeded exception");
}
// Special handling for uploads that are too big.
throw new HdivMultipartException(e);
} catch (FileUploadException e) {
if (log.isErrorEnabled()) {
log.error("Failed to parse multipart request", e);
}
throw new HdivMultipartException(e);
}
// Process the uploaded items
Iterator<FileItem> iter = items.iterator();
while (iter.hasNext()) {
FileItem item = iter.next();
if (item.isFormField()) {
this.addTextParameter(request, item);
} else {
this.addFileParameter(request, item);
}
}
return request;
}
/**
* Adds a regular text parameter to the set of text parameters for this request. Handles the case
* of multiple values for the same parameter by using an array for the parameter value.
*
* @param request The request in which the parameter was specified.
* @param item The file item for the parameter to add.
*/
public void addTextParameter(RequestWrapper request, FileItem item) {
String name = item.getFieldName();
String value = null;
boolean haveValue = false;
String encoding = request.getCharacterEncoding();
if (encoding != null) {
try {
value = item.getString(encoding);
haveValue = true;
} catch (Exception e) {
// Handled below, since haveValue is false.
}
}
if (!haveValue) {
try {
value = item.getString("ISO-8859-1");
} catch (java.io.UnsupportedEncodingException uee) {
value = item.getString();
}
haveValue = true;
}
String[] oldArray = (String[]) request.getParameterValues(name);
String[] newArray;
if (oldArray != null) {
newArray = new String[oldArray.length + 1];
System.arraycopy(oldArray, 0, newArray, 0, oldArray.length);
newArray[oldArray.length] = value;
} else {
newArray = new String[] {value};
}
request.addParameter(name, newArray);
}
