k_archana
Posts: 2
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| Posted: 01/11/2008, 3:28 AM |
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hai iam new to this topic plz help me..
i have a problem in setting the values of the database on the textfield present in the web page iam sending the code plesa help me..
JSP program (student.jsp) :
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Student</title>
</head>
<body>
<form action="Student" method="post">
<h1>Student</h1>
StudentName : <input type="text" name= "stuname" value="" /><br>
StudentRoll : <input type="text" name= "sturoll" value="" /><br>
Student Marks1: <input type="text" name= "stumarks1" value="" /><br>
Student Marks2: <input type="text" name= "stumarks2" value="" /><br><br><br>
<input type="submit" name = "button" value="Save" />
<input type="submit" name = "button" value="Delete" />
<input type="submit" name = "button" value="Update" />
<input type="submit" name = "button" value="Find" />
</body>
</html>
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web.xml is :
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">;
<servlet>
<servlet-name>Student_2</servlet-name>
<servlet-class>Student</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Student_2</servlet-name>
<url-pattern>/Student</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>
student.jsp
</welcome-file>
</welcome-file-list>
</web-app>
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Student.java is
import java.io.*;
import java.net.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Student extends HttpServlet {
Connection con;
private String servname;
private int servroll;
private float servmarks1;
private float servmarks2;
private String servbutton;
private PreparedStatement pstsave;
private String servbutton1;
private String servbutton2;
private String servbutton3;
private PreparedStatement pstdel;
private PreparedStatement pstup;
private String servbutton4;
private PreparedStatement pstfind;
private String findbutton;
ResultSet rsfind;
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try
{
System.out.println("entered try");
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
con = DriverManager.getConnection("jdbc:sqlserver://Terragon20;databasename=Student1","sa","sa@1234");
servbutton = request.getParameter("button");
System.out.println("button =" + servbutton);
if(servbutton.equals("Save"))
{
System.out.println("entered save");
servname = request.getParameter("stuname");
System.out.println("the stuname ="+servname);
servroll = Integer.parseInt(request.getParameter("sturoll"));
System.out.println("the roll no" + servroll);
servmarks1 = Float.parseFloat(request.getParameter("stumarks1"));
System.out.println("the marks1 =" + servmarks1);
servmarks2 = Float.parseFloat(request.getParameter("stumarks2"));
System.out.println("marks2 =" + servmarks2);
pstsave = con.prepareStatement("insert into stu_details(sname,srollno,smarks1,smarks2)values(?,?,?,?)");
pstsave.setString(1,servname);
System.out.println("name");
pstsave.setInt(2,servroll);
System.out.println("roll");
pstsave.setFloat(3,servmarks1);
System.out.println("m1");
pstsave.setFloat(4,servmarks2);
System.out.println("m2");
pstsave.executeUpdate();
System.out.println("Save is success");
}
else if(servbutton.equals("Delete" ))
{
System.out.println("entered delete");
servroll = Integer.parseInt(request.getParameter("sturoll"));
System.out.println("the roll no" + servroll);
pstdel = con.prepareStatement("delete from stu_Details where srollno=?");
pstdel.setInt(1,servroll);
pstdel.executeUpdate();
System.out.println("delete is success");
}
else if(servbutton.equals("Update"))
{
servroll = Integer.parseInt(request.getParameter("sturoll"));
servname = request.getParameter("stuname");
servmarks1 = Float.parseFloat(request.getParameter("stumarks1"));
servmarks2 = Float.parseFloat(request.getParameter("stumarks2"));
pstup = con.prepareStatement("update stu_details set sname=?,srollno=?,smarks1=?,smarks2=? where srollno = ?");
pstup.setString(1,servname);
pstup.setInt(2,servroll);
pstup.setFloat(3,servmarks1);
pstup.setFloat(4,servmarks2);
pstup.setInt(5,servroll);
pstup.executeUpdate();
System.out.println("update is success");
}
if(servbutton.equals("Find"))
{
System.out.println("entered find");
servroll = Integer.parseInt(request.getParameter("sturoll"));
pstfind = con.prepareStatement("select sname,smarks1,smarks2 from stu_details
pstfind.setInt(1,servroll);
rsfind = pstfind.executeQuery();
while(rsfind.next())
{
// here iam confused and unable to write the code please help me...
}
}
}
catch(Exception e)
{
e.printStackTrace();
}
out.close();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/** Returns a short description of the servlet.
*/
public String getServletInfo() {
return "Short description";
}
}
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if servbutton = Find then i should get the student details from the database and should print in the text fields of the web page , iam not getting it please help me.....
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archana |
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