Hello everyone hope you having a good day,because i'm not xD , i'm new to the web programming and i've started with JSP and Servelts to do web operation my problem is when i click on "delete" it triggers the servlet but nothing happen the row doesn't get deleted and the value ( pw.print(name) ) doesn't show up. these are my codes.
DeleteServlet.java
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class deleteuser extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter pw=response.getWriter();
try {
Connection con=Connecter.obtenirconnexion();
Statement st=con.createStatement();
String name=request.getParameter("id");
String Query="delete from users where name ='"+ name+"'";
st.executeUpdate(Query);
pw.print(name);
} catch (SQLException ex) {
Logger.getLogger(deleteuser.class.getName()).log(Level.SEVERE, null, ex);
}
request.getRequestDispatcher("users.jsp").forward(request, response);
}
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}
Users.jsp
<%@page import="java.sql.ResultSet"%>
<%@page import="java.sql.PreparedStatement"%>
<%@page import="login.Connecter"%>
<%@page import="java.sql.Connection"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Users</title>
<style> table,td,th
{
border:1px black solid;
} </style>
</head>
<body>
<h1>Hello World</h1>
<%
Connection con = Connecter.obtenirconnexion();
String req = "select * from users";
PreparedStatement pst = con.prepareStatement(req);
ResultSet cur = pst.executeQuery();
out.println("<table ><tr><th>Name</th> <th>Password </th><th>Rank </th><th>Delete </th>");
while (cur.next()) {
out.println("<tr><td>" + cur.getString(1) + "</td><td>" + cur.getString(2) + "</td><td>" + cur.getString(3) + "</td><td> <a href=deleteuser id='"+cur.getString(1)+"'> delete </a></td></tr>");
}
out.println("</table>");
out.close();
%>
</body>
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