public
void sendError(int sc, String msg) throws IOException
Sends
an error response to the client using the specified status and
message provided in the argument and clears the buffer. If
the response was committed before this method call, then
IllegalStateException thrown. The server will preserve cookies and
may clear or update any headers needed to serve the error page as a
valid response.
Main.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>send Error</title> </head> <body> <form method="get" action="/servlet/SendError"> <input type="submit" value ="Get Data"> </form> </body> </html>
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"> <servlet> <servlet-name>SendError</servlet-name> <servlet-class>SendError</servlet-class> </servlet> <servlet-mapping> <servlet-name>SendError</servlet-name> <url-pattern>/SendError</url-pattern> </servlet-mapping> </web-app>
SendError.java
import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class SendError extends HttpServlet { @Override public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException{ res.sendError(404, "Requested resource not found"); } }
Output
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