public static void main(String[] args) {
try {
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
;
Connection conn =
DriverManager.getConnection(
"jdbc:oracle:thin:@192.168.117.110:1521:WFZF", "qzkj", "qzkj");
conn.setAutoCommit(false);
;
BLOB blob = null;
PreparedStatement pstmt =
conn.prepareStatement("insert into sys_file(uuid,content,name) values(?,empty_blob(),?)");
String uuid = Tool.getStringUUid();
pstmt.setString(1, uuid);
pstmt.setString(2, "test.flv");
pstmt.executeUpdate();
pstmt.close();
pstmt = conn.prepareStatement("select content from sys_file where uuid= ? for update");
pstmt.setString(1, uuid);
ResultSet rset = pstmt.executeQuery();
;
if (rset.next()) blob = (BLOB) rset.getBlob(1);
;
String fileName = "test.flv";
File f =
new File(
"C://Documents and Settings//Administrator//桌面//FlvPlayer201002//FlvPlayer201002//"
+ fileName);
FileInputStream fin = new FileInputStream(f);
;
System.out.println("file size = " + fin.available());
pstmt = conn.prepareStatement("update sys_file set content=? where uuid=?");
;
OutputStream out = blob.getBinaryOutputStream();
;
int count = -1, total = 0;
byte[] data = new byte[(int) fin.available()];
fin.read(data);
;
out.write(data);
;
/*
byte[] data = new byte[blob.getBufferSize();]; 另一种实现方法,节省内存
while ((count = fin.read(data);); != -1); {
total += count;
out.write(data, 0, count);;
}
*/
fin.close();
;
out.close();
;
pstmt.setBlob(1, blob);
;
pstmt.setString(2, uuid);
pstmt.executeUpdate();
;
pstmt.close();
;
conn.commit();
;
conn.close();
;
} catch (SQLException e) {
System.err.println(e.getMessage());
;
e.printStackTrace();
} catch (IOException e) {
System.err.println(e.getMessage());
;
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// Variable initializations.
HttpSession session = request.getSession();
FileItem image_file = null;
int record_id = 0;
int image_id;
// Check if a record ID has been entered.
if (request.getParameter("recordID") == null || request.getParameter("recordID").equals("")) {
// If no ID has been entered, send message to jsp.
response_message =
"<p><font color=FF0000>No Record ID Detected, Please Enter One.</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();
// Will get multiple image files if that happens and can be accessed through FileItems.
List<FileItem> FileItems = fu.parseRequest(request);
// Connect to the database and create a statement.
conn = getConnected(drivername, dbstring, username, password);
stmt = conn.createStatement();
// Process the uploaded items, assuming only 1 image file uploaded.
Iterator<FileItem> i = FileItems.iterator();
while (i.hasNext()) {
FileItem item = (FileItem) i.next();
// Test if item is a form field and matches recordID.
if (item.isFormField()) {
if (item.getFieldName().equals("recordID")) {
// Covert record id from string to integer.
record_id = Integer.parseInt(item.getString());
String sql = "select count(*) from radiology_record where record_id = " + record_id;
int count = 0;
try {
rset = stmt.executeQuery(sql);
while (rset != null && rset.next()) {
count = (rset.getInt(1));
}
} catch (SQLException e) {
response_message = e.getMessage();
}
// Check if recordID is in the database.
if (count == 0) {
// Invalid recordID, send message to jsp.
response_message =
"<p><font color=FF0000>Record ID Does Not Exist In Database.</font></p>";
session.setAttribute("msg", response_message);
// Close connection.
conn.close();
response.sendRedirect("UploadImage.jsp");
}
}
} else {
image_file = item;
if (image_file.getName().equals("")) {
// No file, send message to jsp.
response_message = "<p><font color=FF0000>No File Selected For Record ID.</font></p>";
session.setAttribute("msg", response_message);
// Close connection.
conn.close();
response.sendRedirect("UploadImage.jsp");
}
}
}
// Get the image stream.
InputStream instream = image_file.getInputStream();
BufferedImage full_image = ImageIO.read(instream);
BufferedImage thumbnail = shrink(full_image, 10);
BufferedImage regular_image = shrink(full_image, 5);
// First, to generate a unique img_id using an SQL sequence.
rset1 = stmt.executeQuery("SELECT image_id_sequence.nextval from dual");
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";
rset = stmt.executeQuery(cmd);
rset.next();
BLOB myblobFull = ((OracleResultSet) rset).getBLOB(5);
BLOB myblobThumb = ((OracleResultSet) rset).getBLOB(3);
BLOB myblobRegular = ((OracleResultSet) rset).getBLOB(4);
// Write the full size image to the blob object.
OutputStream fullOutstream = myblobFull.getBinaryOutputStream();
ImageIO.write(full_image, "jpg", fullOutstream);
// Write the thumbnail size image to the blob object.
OutputStream thumbOutstream = myblobThumb.getBinaryOutputStream();
ImageIO.write(thumbnail, "jpg", thumbOutstream);
// Write the regular size image to the blob object.
OutputStream regularOutstream = myblobRegular.getBinaryOutputStream();
ImageIO.write(regular_image, "jpg", regularOutstream);
// Commit the changes to database.
stmt.executeUpdate("commit");
response_message = "<p><font color=00CC00>Upload Successful.</font></p>";
session.setAttribute("msg", response_message);
instream.close();
fullOutstream.close();
thumbOutstream.close();
regularOutstream.close();
// Close connection.
conn.close();
response.sendRedirect("UploadImage.jsp");
instream.close();
fullOutstream.close();
thumbOutstream.close();
regularOutstream.close();
// Close connection.
conn.close();
} catch (Exception ex) {
response_message = ex.getMessage();
}
}