Image rotator from database
I want to display a couple of rows that will sow about 4 images per row. But images need to be rotated every time the page is refreshed, and the images come from links on the database. Any help will be appreciated. Thanks
This might get you started with the basics
Dynamically populating a JavaScript image slideshow
Here's another one using Bootstrap, PHP and MySQLi *improved*.
http://www.phpgang.com/dynamic-image-slider-using-twitter-bootstrap-php-with-mysql_471.htm l
Nancy O.
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Jasper report on HTML when one image loaded from database and for the other
How to generate jasper report on HTML when one image loaded from database and for the other we give a image path
My code
ByteArrayOutputStream baos = new ByteArrayOutputStream();
exporter = new JRHtmlExporter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, print);
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, baos);
exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, strImageInputDirectory);
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exporter.setParameter(JRHtmlExporterParameter.IS_OUTPUT_IMAGES_TO_DIR, Boolean.TRUE);
exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE);
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byte[] bdata = ((ByteArrayOutputStream) baos).toByteArray();
Can any one help pls
Message was edited by:
ameet.auhey sorry for posting it in this forum.
but do u have sample code for making it work.. since i am able to do it on PDF format(image from Database and another stored in the webserver) using
byte image[] =(byte[]) outData.get("image");
ByteArrayInputStream img = new ByteArrayInputStream(image);
hmimg.put("P_PARAMV3", img);
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Getting image path from database( Remote server) & display in jsp page
hai frnds,
i have one doudt regarding in my web application Development
. I want to Getting image path from database( **Remote server**) & display in jsp page here iam forwarding my control through Servlets
how this will passiable
Thanks in Advance
SonyKamesh
[email protected]hai
I think ur doubt will be...
1) Getting a Image From Remote Server( & U stored a only path name in Data Base)
2) Image r stroed in saparate Drive( Not in Webroot-- where u Created domine )
Please Any Help Will be Appriciated
[email protected]
Edited by: Sonykamesha on Dec 18, 2007 11:02 PM -
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Problem Populating Image Item From Database
Hi All,
I am using Oracle 9i & Forms 6i on Windows platform & working in client/server model. I created a form in which, I am reading an image file from the file system & then saving it into the database. In the Databse, i created the column as BLOB. But, when I query, this does not retrive the saved image in Image Item. But image is actually saved. When I tried, changing the database column to LONG RAW, it is working. I mean its reading the image in the image item from the database.
Can anyone pls tell me, is there any problem like this, as we can retrive from LONG RAW but not from BLOB, or I am missin something here.
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Issues with Image rendering from Database
Maestros,
I have an issue here that I working but can hardly find a plausible solution and would like some help from the community. I'll do my best to explain the my issue in detail that way those of you who are savvy in this domain can jump on it right away.
I am in the process of implementing a shopping grid where products are shown as items on the grid. Each grid contains a custom product tag that contains a product image thumbnail, the description and price. All picture images are stored in a postgres sql database as byte arrays. I retrieve and rendered them on the product grid using a servlet that calls my product service.
The problem I am having is that when products are rendered not all the images are rendered even though they are present. One a refresh is done, some of the ones that previously did not render on renders and some that did go missing. I am using jsf and it looks like the application reaches the render response phase before the images are completely retrieved. I am also implement hibernate ehcache to see if that can help solve the problem, to no avail.
Is my approach the right approach? I know some of you would want to ask why I save images in a database and if you really want to know, the reason is because products are loaded dynamically and one product can have as many images as the e-shop manager wants. If please have another way to solve this problem please feel free to let me know. I am sure there is a better way of retrieving those images and render them without any issues and if you have done anything like that before feel free to send me some directions.
Thanks
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Actually image byte stream is comming back from Servlet to Flex End , but when I want to display it , then it shows the place of the image as black .I think image pixel's are not combining togather ..........Have you any Idea?
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private function getPhotoResultHandler(event:ResultEvent):void{
try{
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How to get images dynamically from database without file paths in the table field
I have a MS-Access database. I am working with ASP.NET. In the database there is product table in which I have "CodeNo" as a field which is a text field, and the product codes like "SM-R-2035". I also have another field "Image" which is also a text field and which have a file path in it corresponding to the particular product Image (e.g. Images\Products\SM-R-2035.jpg). So far every thing is ok. I have to update this site very frequently and lots of images are added each and every time. Its a tedious work to type the paths and file name every time and it also take a lot of time.
What I am asking is : Is it possible to get images from a specific folder at runtime which is referenced by the "code no" itself and not the file path from the database. (Say at run time the "code no" is referenced from the database and the corresponding image is loaded dynamically from the specified folder). In other word I want to avoid the tedious work of typing.
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If the code in your database is SM-R-2035, the file name is SM-R-2035.jpg and the path to the images foilder is Images\Products\SM-R-2035.jpg, Conceptually here is what you need to do:
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I tested this out, and unfortunately, to my surprise, and disappointment, a few images did not display on the page. Though the images are in the database table. I'm a little lost as to why this problem is occurring.
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%>
<img src="go.imageP?imageNumber=<%=products[[0]%>">
<% }//for %>
Sorry for not posting code snippets from my servlet in my first post of this topic....
Here is my servlet snippet - public class ImageProcessingServlet extends HttpServlet {
public Connection conn = null;
public ResultSet rs = null;
public Statement stmt = null;
public PreparedStatement pstmt = null;
public PrintWriter out = null;
public String siteNameReference = "";
int maxFullSizeImageWidth = 600;
int maxSizeImageWidth = 300;
int maxSizeThumbWidth = 140;
int maxImageFields = 4;
String errorMessage = "";
public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
doPost(req,res);
public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
try {
HttpSession session = req.getSession();
siteNameReference = req.getParameter("snr");
String process = req.getParameter("process");
if(process == null) process = "";
Context ctx = new InitialContext();
if(ctx == null )
throw new Exception("Boom - No Context");
DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/imageDB");
conn = ds.getConnection();
stmt = conn.createStatement();
rs = stmt.executeQuery("Select "+imageNumber+" from images");
rs.next();
Blob blobImage = rs.getBlob(1);
getImage(blobImage,"thumb",res);
if(rs != null) { rs.close(); }
rs = null;
if(stmt != null) { stmt.close(); }
stmt = null;
if(pstmt != null) { pstmt.close(); }
pstmt = null;
conn.close();
conn = null;
}//try
catch (Exception e) { }
finally {
if (rs != null) {
try { rs.close(); } catch (SQLException e) { ; }
rs = null;
if (stmt != null) {
try { stmt.close(); } catch (SQLException e) { ; }
stmt = null;
if (pstmt != null) {
try { pstmt.close(); } catch (SQLException e) { ; }
pstmt = null;
if (conn != null) {
try { conn.close(); } catch (SQLException e) { ; }
conn = null;
}//finally
}//post
public void getImage(Blob blobImage, String imageType, HttpServletResponse res) {
try {
//imageType will = Super = 600
// = Large = 300
// = Thumb = 150
res.reset();
res.setContentType("image/jpeg");
BufferedInputStream bis = new BufferedInputStream(blobImage.getBinaryStream());
BufferedOutputStream bos = new BufferedOutputStream(res.getOutputStream());
if(imageType.equals("super")) {
byte[] imageBytes = new byte[(int)blobImage.length()]; //picture size
int length;
while((length = bis.read(imageBytes)) > 0) {
bos.write(imageBytes, 0, length);
bos.flush();
res.flushBuffer();
} else
if(imageType.equals("large")) {
resize(bis,bos,maxSizeImageWidth);
bos.flush();
res.flushBuffer();
} else
if(imageType.equals("thumb")) {
resize(bis,bos,maxSizeThumbWidth);
bos.flush();
res.flushBuffer();
}//if
//close streams
bis.close();
bos.close();
}//try
catch(Exception e) {}
}//end
public void resize(BufferedInputStream bis, BufferedOutputStream bos, int maxImageWidth) {
try {
BufferedImage bufimg = ImageIO.read(bis);
//size of image
int img_width = bufimg.getWidth();
int img_height = bufimg.getHeight();
double scale = (double)maxImageWidth/(double)img_width;
Image sized = getScaledInstanceAWT(bufimg, scale, Image.SCALE_SMOOTH);
//convert image to BufferedImage
BufferedImage resized = toBufferedImage(sized, BufferedImage.TYPE_INT_RGB);
ImageIO.write(resized,"jpeg",bos);
}//try
catch(Exception e){}
}//end
Edited by: webnotick on Apr 13, 2010 12:24 PM
--added a method to the code snippet -- -
Error while Image loading from database
I'am using generic handler for loading Image from data bases. Its work fine when when I hardcode the ImageID in QureyString when call Handler. But it's giving errors of different type when I dynamically pass value to qurey string(from datatable).
"There is already an open DataReader associated with this Command which must be closed first."
OR
"There is already an open DataReader associated with this Command which must be closed first."
here is a code of Handler
public void ProcessRequest(HttpContext context)
Int64 id = Convert.ToInt64(HttpContext.Current.Request.QueryString["adid"]);
// dt = obj_dalayer.GetRecpDetailsByID(id);
dt=GetRecpDetailsByID(id);
if (dt.Rows.Count > 0)
//context.Response.ContentType = "image/jpeg";
context.Response.BinaryWrite((byte[])dt.Rows[0][2]);
public DataTable GetRecpDetailsByID(Int64 reid)
try
obj_DB.Open();
obj_sqlcmd = new SqlCommand("GetRecpDetailsByID", obj_DB.GetDBConnection());
obj_sqlcmd.CommandType = CommandType.StoredProcedure;
obj_sqlcmd.Parameters.Add(new SqlParameter("@rid", reid));
obj_sqlda = new SqlDataAdapter();
obj_dt = new DataTable();
obj_sqlda.SelectCommand = obj_sqlcmd;
obj_sqlda.Fill(obj_dt);
return obj_dt;
finally
obj_DB.Close();
And here is a HTML and ServerSide code on ASPX page of call handler.
<img id="img2" alt="Image" runat="server" src='<%#"~/ImageReqHandler.ashx?adid="+Eval("ReID")%>' width="179" height="148" /
I'm using Eval("ReID") to get ID of Image from datatable.Ayez,
This is the VB forum, try it in the C# form.
http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral
However, there they will probably tell you that although your problem is C#, it is ASP.Net some programmers become scared if it is Web you know.
Success
Cor -
Image Retrevial From Database throws error
Can anyone point out what i'm doing wrong with the code below please..
It all works perfectly and returns the image. The probelm is that it causes
java.lang.IllegalStateException: getOutputStream() has already been called for this response
to be thrown in the site's logfile.
It all works perfectly by causes the log file to fill up as visitors access the image.
<%@ page import="java.io.*" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.DriverManager" %>
<%
Connection connectiongalleryimage = null;
Statement statementgalleryimage = null;
InputStream sImage = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
connectiongalleryimage = DriverManager.getConnection("jdbc:mysql://cluster_01:3306/site_db", "xxxxxx", "xxxxxxx");
statementgalleryimage = connectiongalleryimage.createStatement();
ResultSet rs = statementgalleryimage.executeQuery("select main_image from galleryobj where galobj_id=5 and rec_status='ACTIVE'");
rs.first();
byte[] bytearray = new byte[4096];
int size=0;
sImage = rs.getBinaryStream(1);
response.reset();
response.setContentType("image/jpeg");
response.addHeader("Content-Disposition","filename=getimage.jpeg");
OutputStream outputStream = response.getOutputStream();
while((size=sImage.read(bytearray))!=-1) {outputStream.write(bytearray,0,size);}
} catch (Exception e) {
out.println("<!-- Error getting requested image: "+e+"-->");
} finally {
response.flushBuffer();
sImage.close();
statementgalleryimage.close();
connectiongalleryimage.close();
%>Google has lot of examples: http://www.google.com/search?q=imageservlet+code+example
At least here is one: http://balusc.blogspot.com/2007/04/imageservlet.html -
How can i display an image item (BLOB) of oracle database on an HTML page using JAVA servlets?
Put an IMG tag into the HTML page.
Let the URL be your servlet. Do not forget to set the content type. -
Image Loaded From Database not Visible in JLabel
import java.sql.*;
import javax.swing.*;
import java.awt.*;
public class consqlimage
public consqlimage()
try
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Connection con = DriverManager.getConnection("jdbc:odbc:dsn","sa","manshu");
Statement stat = con.createStatement();
ResultSet rs = stat.executeQuery("Select pic from t_image");
byte b[];
b = new byte[1000];
while(rs.next())
b= rs.getBytes("pic");
for(int a=0;a!=b.length;a++)
System.out.println(b[a]);
JFrame f = new JFrame();
ImageIcon i1 = new ImageIcon(b+"jpeg");
JLabel l1=new JLabel("january",i1,SwingConstants.LEFT);
f.getContentPane().add(l1);
f.getContentPane().setLayout(new FlowLayout(FlowLayout.LEFT));
f.setSize(500,500);
f.setVisible(true);
con.close();
catch(Exception e)
System.out.println(e);
public static void main(String args[])
new consqlimage();
}Any reason why you are adding the "jpeg" to the end of the byte array?
You should only have to pass the byte array to the ImageIcon constructor. -
Displaying image from database in report
I need to include a picture (company logo) in numerous reports. This logo will be stored in an MS SQL Image field in a table (this bit I have already sorted out).
What I'm wondering is, what is the best way to retrieve this image from the database? Do I just include it in the view the report runs off? I'm hesitant to do this, as the view may return back hundreds of records, which means (I think) it will be sending the image along with it hundreds in time.
In short:
1) What is the best way to pass an image to a report.
2) If I include the Image field in a view which returns back hundreds of line, will the image be returned also hundreds of time, causing network congestion/performance issues?
3) If so (2), is there a way of sending the image only once, no matter how many rows are in the returned view?
Thanks.Hi Shanon,
We can display the image by making it a local copy on your machine.
If it is possible to get the image saved on local copy.
If we place the image in detail section then it would return one record.
As the image is from Database, so it would hit the database very time when you refresh the report and place it in Report Header or report fotter.
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I get error message each time I try to retrieve image (BLOB) from Oracle
Can anyone help me?
I am working with Servlet and JDBC with Oracle database. I can insert an image (GIF file) in a Oracle
table in a BLOB field. But everytime I want to retrieve it
I got an error "AbstractMethodError". My retrieve program (only the main part) is as below:
String dbURL="jdbc:oracle:thin:@200.200.100.2:1521:tvm";
String db_username="PROJ1"; String db_password="PROJ1";
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
}catch(ClassNotFoundException e1){ }
try{
Connection c=DriverManager.getConnection(dbURL,db_username,db_password);
// Retrieving image file from database
RandomAccessFile raf=new RandomAccessFile("//Davison/jakarta/webapps/examples/images/a10.gif","rw");
PreparedStatement pstmt2=c.prepareStatement("Select fname,photo From testtable1 where fname=?");
pstmt2.setString(1,"rere100");
ResultSet rs=pstmt2.executeQuery();
while(rs.next()){
Blob blobImage=rs.getBlob("photo");
int length=(int)blobImage.length();
byte[] blobArray=blobImage.getBytes1,length);
raf.write(blobArray);
raf.close();
Please help me soon, my email is: [email protected]
Bye , ReaProbably a bit late, but I just got the same problem.
Oracle seems to instantiate a class which is not fully defined-
oracle.sql.BLOB. This class has abstract methods, and is therefore
an abstract class.
In short, Oracle are stupid fools. How they managed to instantiate
an abstract class in the first place should be of concern to the
Java gurus, however. Native code in the OCI driver perhaps?
If you still need help, you could try uning the Thin driver- or
a database with a JDBC driver which actually meets the spec. There
are third party Oracle drivers which might fit the bill- they
usually cost money, however.
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