Servlet Request

Servlet Tutorials

Request and Response

Session Management

Servlet Filter

Servlet Projects

The objective of a Servlet is to handle client request. There are two interfaces present in Servlet API, javax.servlet.ServletRequest and javax.servlet.http.HttpServletRequest to encapsulate client request. An object of ServletRequest is used to provide the client request information to a servlet such as content type, content length, parameter names and values, header informations, attributes etc .

Let's see an example to demonstrate the Servlet Request

index.html

<html>
<body>
    <form action="MyServlet" method="post">
        Name <input type="text" name="uname">
        <input type="submit" value="ok">
    </form>
</body>
</html>

MyServlet.java

MyServlet.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class MyServlet extends HttpServlet {

  protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
    response.setContentType("text/html");
    PrintWriter pw = response.getWriter();
    String s=request.getParameter("uname");
    pw.println("Welcome"+s);
    }
}

web.xml

<servlet>
    <servlet-name>abc</servlet-name>
    <servlet-class>com.javarace.MyServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name> abc</servlet-name>
    <url-pattern>/MyServlet</url-pattern>
</servlet-mapping>

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