Passing Strings from JSP to Servlet

[sharvey99]

I am using the RequestDispatcher to pass control from a controling servlet to JSP pages when user output is required. In all cases when a JSP page containing a form is submitted all values are passed in to the servlet and all works well. I don't seem to be able to do the same in reverse. My servlet does a mySQL lookup based on a submitted value but I don't seem to be able to pass these vars to a jsp page to display them.

I have tried using request.setAttribute() but this seems not to work. Any ideas ? here's an extract

else if (state.equals("new&quot){

String target = "/displayinfo.jsp";

//existing session new

//Open Connection

try {

Class.forName("org.gjt.mm.mysql.Driver"
} catch(java.lang.ClassNotFoundException e) {
System.err.print("ClassNotFoundException: "
System.err.println(e.getMessage());
}

try {

Connection cons = DriverManager.getConnection
("jdbc:mysql:///moreinfo", "username", "password"

Statement stmts = cons.createStatement();
String queryStrs = "Select * from details where code = '" + code + "'";

ResultSet rss = stmts.executeQuery(queryStrs);
while (rss.next()){

replace rep = new replace();
String oldDetails = rss.getString("details"
String details = rep.replace(oldDetails,&quot;\n&quot;,&quot;<BR>&quot;

String serial = rss.getString(&quot;serial&quot;
String title = rss.getString(&quot;title&quot;
String summary = rss.getString(&quot;summary&quot;

}

} catch (java.sql.SQLException e){
System.err.print(&quot;SQLException: &quot;
System.err.println(e.getMessage());
}

request.setAttribute (&quot;serial&quot;, serial);
request.setAttribute (&quot;title&quot;, title);
request.setAttribute (&quot;summary&quot;, summary);
request.setAttribute (&quot;details&quot;, details);

RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(target);
dispatcher.forward(request, response );

}

 

[Hattusas]

Correct me if I have misunderstanding.You forward your servlet into JSP by RequestDispatcher class.This JSP has a form.When this form is submitted it leads to a servlet or same servlet.But when you type request.getParameter(<the form element name>) in your servlet.It returns null.Is this the case? Salih Sipahi
Software Engineer.
City of Istanbul Turkey
openyourmind77@yahoo.com

 

[Nebse]

You seem to have done averything right - so are you sure the if(state.equals(&quot;new&quot) evaluates to true????

I don't know anything about your servlet but if it dosn't and you redirect to &quot;/displayinfo.jsp&quot; later in the code anyway you wouldn't have retrieved the data - try writing &quot;true&quot; instead and se if it work ... and if it does find out why state.equals(&quot;new&quot doesn't ... mayby equalsIgnoreCase will?

Nebse