CODEWITHSUNDEEP
javahtmlservletsrequest
tom
tom

Reputation: 5514

Unable to forward the values form servlet to html

I am trying to Send userName as request to html page as set attribute, But it is not displaying the msgs in FormDemo, Please let me know where i am going wrong.

Login page 

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Login Form</title>
</head>
<body>
<div align="center">
<form name="loginForm" method="post" action="loginServlet">
    Username: <input type="text" name="username"/> <br/>
    Password: <input type="password" name="password"/> <br/>
    <input type="submit" value="Login" />
</form>
</div>
</body>
</html>

Login servlet.java

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 public class LoginServlet extends HttpServlet {

/**
 * 
 */
private static final long serialVersionUID = 1L;

protected void doPost(HttpServletRequest request,
        HttpServletResponse response) throws ServletException, IOException {

    // read form fields
    String username = request.getParameter("username");
    String password = request.getParameter("password");

    System.out.println("username: " + username);
    System.out.println("password: " + password);
    request.setAttribute("userName", username);
         request.getRequestDispatcher("/FormDemo.html").forward(request,response);
}

}

FormDemo.html

   <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
"http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>Form Demo</title>
   </head>
   <body>
   <p> <%= request.getAttribute("userName") %></p>
   </body>
  </html>

Web.xml

  <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
       <display-name>LexisNexis</display-name>
       <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        </welcome-file-list>

           <servlet>
          <servlet-name>LoginServlet</servlet-name>
             <servlet-class>package.LoginServlet</servlet-class>
           <load-on-startup>0</load-on-startup>
           </servlet>

           <servlet-mapping>
          <servlet-name>LoginServlet</servlet-name>
             <url-pattern>/loginServlet</url-pattern>
             </servlet-mapping>

          <servlet>
          <servlet-name>DemoServlet</servlet-name>
               <servlet-class>package.DemoServlet</servlet-class>
           </servlet>

          <servlet-mapping>
               <servlet-name>DemoServlet</servlet-name>
               <url-pattern>/demoServlet</url-pattern>
             </servlet-mapping>

            </web-app>

Upvotes: 0

Views: 501

Answers (2)

Kuldeep Singh
Kuldeep Singh

Reputation: 309

U can not render values from servlet to html. Jsp tags you are using works with JSP only. JSP is also a type of Servlet so when you forward a request from one servlet to JSP, request bring all request and response data to JSP and your attributes will be available in JSP too. So use FormDemo.jsp instead of FormDemo.html. It will work then.

Upvotes: 1

worpet
worpet

Reputation: 3893

There is not a way to write values like this into a plain HTML page. You will need to use a JSP to do this.

Upvotes: 1

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