/**
* Checks to see if a valid record id has been entered.
*
* @param record_id the record id
* @return True if the id is valid. False otherwise.
*/
public boolean isValidID(int record_id) {
db = new Database();
db.connect();
conn = db.getConnection();
String sql = "select count(*) from radiology_record where record_id = " + record_id;
int count = 0;
try {
stmt = conn.createStatement();
rset = stmt.executeQuery(sql);
while (rset != null && rset.next()) {
count = (rset.getInt(1));
}
} catch (SQLException e) {
response_message = e.getMessage();
} finally {
db.close(conn, stmt, null, rset);
}
if (count == 0) {
return false;
}
return true;
}
@SuppressWarnings({"unchecked", "deprecation"})
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response_message = "";
HttpSession session = request.getSession();
FileItem image_file = null;
int record_id = 0;
int image_id;
InputStream instream = null;
OutputStream full_outstream = null;
OutputStream thumb_outstream = null;
OutputStream regular_outstream = null;
// Check if there is any input in the record id field
if (request.getParameter("recordID") == null || request.getParameter("recordID").equals("")) {
response_message = "<p><font color=ff0000>No ID entered!</font></p>";
session.setAttribute("msg", response_message);
response.sendRedirect("uploadImage.jsp");
}
try {
// Parse the HTTP request to get the image stream
DiskFileUpload fu = new DiskFileUpload();
List<FileItem> FileItems = fu.parseRequest(request);
// Process the uploaded items, assuming only 1 image file uploaded
Iterator<FileItem> i = FileItems.iterator();
while (i.hasNext()) {
FileItem item = (FileItem) i.next();
if (item.isFormField()) {
if (item.getFieldName().equals("recordID")) {
record_id = Integer.parseInt(item.getString());
if (!isValidID(record_id)) {
response_message = "<p><font color=ff0000>Invalid record id!</font></p>";
session.setAttribute("msg", response_message);
response.sendRedirect("uploadImage.jsp");
}
}
// out.println(item.getFieldName() + ": " +
// item.getString());
} else {
image_file = item;
if (image_file.getName().equals("")) {
response_message = "<p><font color=ff0000>No file selected!</font></p>";
session.setAttribute("msg", response_message);
response.sendRedirect("uploadImage.jsp");
}
}
}
// Get the image stream
instream = image_file.getInputStream();
BufferedImage full_image = ImageIO.read(instream);
BufferedImage thumbnail = shrink(full_image, THUMBNAIL_SHRINK);
BufferedImage regular_image = shrink(full_image, REGULAR_SHRINK);
// Connect to the database
db = new Database();
db.connect();
conn = db.getConnection();
stmt = conn.createStatement();
/*
* First, to generate a unique pic_id using an SQL sequence
*/
ResultSet rset1 = stmt.executeQuery(SQL_IMAGE_ID);
rset1.next();
image_id = rset1.getInt(1);
// Insert an empty blob into the table first. Note that you have to
// use the Oracle specific function empty_blob() to create an empty
// blob
stmt.execute(
"INSERT INTO pacs_images VALUES("
+ record_id
+ ","
+ image_id
+ ", empty_blob(), empty_blob(), empty_blob())");
// to retrieve the lob_locator
// Note that you must use "FOR UPDATE" in the select statement
String cmd = "SELECT * FROM pacs_images WHERE image_id = " + image_id + " FOR UPDATE";
ResultSet rset = stmt.executeQuery(cmd);
rset.next();
BLOB thumb = ((OracleResultSet) rset).getBLOB("thumbnail");
BLOB regular = ((OracleResultSet) rset).getBLOB("regular_size");
BLOB full = ((OracleResultSet) rset).getBLOB("full_size");
// Write the image to the blob object
full_outstream = full.getBinaryOutputStream();
ImageIO.write(full_image, "jpg", full_outstream);
thumb_outstream = thumb.getBinaryOutputStream();
ImageIO.write(thumbnail, "jpg", thumb_outstream);
regular_outstream = regular.getBinaryOutputStream();
ImageIO.write(regular_image, "jpg", regular_outstream);
stmt.executeUpdate("commit");
response_message = "<p>Upload OK!</p>";
session.setAttribute("msg", response_message);
response.sendRedirect("uploadImage.jsp");
} catch (Exception ex) {
response_message = ex.getMessage();
} finally {
if (instream != null) {
instream.close();
}
if (full_outstream != null) {
full_outstream.close();
}
if (thumb_outstream != null) {
thumb_outstream.close();
}
if (regular_outstream != null) {
regular_outstream.close();
}
db.close(conn, stmt, null, rset);
}
}