Inserting blob data into database

Question

Hello everybody,
I need insert blob data into database. that data i need to get from form
can i use request.getParameter(""); for getting that file.
Plz help how to get data from form to servlet and through callablestatement i need to insert into database.
regards,
Anil

Answer 1

Hi,
1) first create a form with file element
first.jsp
<form action="GetData" enctype="multipart/form-data" method="post">
<input type="file" name="datafile" size="40">
<input type="submit" value="Send">
<input type="reset" name="Reset" value="Cancel">
</form>
GetData.java
// servlet file
public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
res.setContentType("text/html");
PrintWriter out = response.getWriter();
try {
System.setProperty( "jdbc.drivers", "com.microsoft.jdbc.sqlserver.SQLServerDriver" );
Class.forName( "com.microsoft.jdbc.sqlserver.SQLServerDriver" );
con = DriverManager.getConnection( "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=JAVATEAM;SelectMethod=cursor;User=sa;Password=urpassword" );
PreparedStatement pst = con.prepareStatement("insert into uploads(binaryfile) values(?)");
FileInputStream fis=new FileInputStream(request.getParameter ( "datafile" ) );
byte[] b= new byte[fis.available()+1];
fis.read(b);
pst.setBytes(1,b);
pst.executeUpdate();
pst.close();
con.close();
catch(SQLException e)
out.println ( e);
catch (ClassNotFoundException e)
out.println( e );
}Here in doPost(), i create preparedstatement,
now you to create one procedure for insert
and by using callable statement you just call that procedure and pass this byte b as arguments,
now its in your hands
my idea is over.