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I want to retrive value in my jsp page but i dont want show my database query in my jsp page. is there any other method to show value in my jsp page using java class
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November 16, 2010 at 12:31 PM
Hi Friend,
Try the following code:
1)DataServlet.java:
import java.io.*;
import java.util.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class DataServlet extends HttpServlet{
String page="/jsp/data.jsp";
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
String connectionURL = "jdbc:mysql://localhost:3306/test";
Connection connection=null;
ResultSet rs;
response.setContentType("text/html");
List dataList=new ArrayList();
try {
Class.forName("com.mysql.jdbc.Driver");
connection = DriverManager.getConnection(connectionURL, "root", "root");
String sql = "select * from data";
Statement s = connection.createStatement();
s.executeQuery (sql);
rs = s.getResultSet();
while (rs.next ()){
dataList.add(rs.getString("name"));
dataList.add(rs.getString("address"));
}
rs.close ();
s.close ();
}
catch(Exception e){
System.out.println("Exception is ;"+e);
}
request.setAttribute("data",dataList);
RequestDispatcher dispatcher = request.getRequestDispatcher(page);
if (dispatcher != null){
dispatcher.forward(request, response);
}
}
}
2)data.jsp:
<%@page language="java" import="java.util.*" %>
<html>
<head>
<title>Data Page</title>
</head>
<body>
<table border="1" width="303">
<tr>
<td ><b>Name</b></td>
<td><b>Address</b></td>
</tr>
<%Iterator itr;%>
<% List data= (List)request.getAttribute("data");
for (itr=data.iterator(); itr.hasNext(); )
{
%>
<tr>
<td ><%=itr.next()%></td>
<td ><%=itr.next()%></td>
</tr>
<%}%>
</table>
</body>
</html>
3)In web.xml, do the servlet mapping:
<servlet>
<servlet-name>DataServlet</servlet-name>
<servlet-class>DataServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DataServlet</servlet-name>
<url-pattern>/DataServlet</url-pattern>
</servlet-mapping>
Thanks
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