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ServletErrorPage.java
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ServletErrorPage.java
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/*
* Copyright (c) 2007, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
/*
* $Id$
*/
/*
* $URL$ $LastChangedDate$
*/
package com.sun.ts.tests.servlet.api.jakarta_servlet_http.httpservletresponse;
import java.io.IOException;
import java.io.PrintWriter;
import jakarta.servlet.RequestDispatcher;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
/**
* Simple Servlet-based error page that displays error related req attributes.
*/
public class ServletErrorPage extends HttpServlet {
private static final String STATUS_CODE = RequestDispatcher.ERROR_STATUS_CODE; // "jakarta.servlet.error.status_code";
private static final String EXCEPTION_TYPE = RequestDispatcher.ERROR_EXCEPTION_TYPE; //"jakarta.servlet.error.exception_type";
private static final String MESSAGE = RequestDispatcher.ERROR_MESSAGE; //"jakarta.servlet.error.message";
private static final String EXCEPTION = RequestDispatcher.ERROR_EXCEPTION; //"jakarta.servlet.error.exception"
private static final String REQUEST_URI = RequestDispatcher.ERROR_REQUEST_URI; //"jakarta.servlet.error.request_uri";
private static final String SERVLET_NAME = RequestDispatcher.ERROR_SERVLET_NAME; //"jakarta.servlet.error.servlet_name"
private static final String EXP_MESSAGE = "error page invoked";
/**
* Invoked by container
*/
public void service(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
PrintWriter pw = res.getWriter();
// display req attributes
pw.println("Servlet Name: " + req.getAttribute(SERVLET_NAME));
pw.println("Request URI: " + req.getAttribute(REQUEST_URI));
pw.println("Status Code: " + req.getAttribute(STATUS_CODE));
pw.println("Exception Type: " + req.getAttribute(EXCEPTION_TYPE));
pw.println("Exception: " + req.getAttribute(EXCEPTION));
pw.print("Message: ");
if (((String) req.getAttribute(MESSAGE)).indexOf(EXP_MESSAGE) > -1) {
pw.println(EXP_MESSAGE);
}
}
}