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Tomcat example source code file (

This example Tomcat source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

httpmessages, httpmessages, string, string, stringbuffer, stringbuffer, stringmanager, stringmanager

The Tomcat source code

 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.

package org.apache.tomcat.util.http;

import org.apache.tomcat.util.res.StringManager;

 * Handle (internationalized) HTTP messages.
 * @author James Duncan Davidson []
 * @author James Todd []
 * @author Jason Hunter []
 * @author Harish Prabandham
 * @author
public class HttpMessages {
    // XXX move message resources in this package
    protected static StringManager sm =
    static String st_200=null;
    static String st_302=null;
    static String st_400=null;
    static String st_404=null;
    /** Get the status string associated with a status code.
     *  No I18N - return the messages defined in the HTTP spec.
     *  ( the user isn't supposed to see them, this is the last
     *  thing to translate)
     *  Common messages are cached.
    public static String getMessage( int status ) {
	// method from Response.
	// Does HTTP requires/allow international messages or
	// are pre-defined? The user doesn't see them most of the time
	switch( status ) {
	case 200:
	    if( st_200==null ) st_200=sm.getString( "sc.200");
	    return st_200;
	case 302:
	    if( st_302==null ) st_302=sm.getString( "sc.302");
	    return st_302;
	case 400:
	    if( st_400==null ) st_400=sm.getString( "sc.400");
	    return st_400;
	case 404:
	    if( st_404==null ) st_404=sm.getString( "sc.404");
	    return st_404;
	return sm.getString("sc."+ status);

     * Filter the specified message string for characters that are sensitive
     * in HTML.  This avoids potential attacks caused by including JavaScript
     * codes in the request URL that is often reported in error messages.
     * @param message The message string to be filtered
    public static String filter(String message) {

	if (message == null)
	    return (null);

	char content[] = new char[message.length()];
	message.getChars(0, message.length(), content, 0);
	StringBuffer result = new StringBuffer(content.length + 50);
	for (int i = 0; i < content.length; i++) {
	    switch (content[i]) {
	    case '<':
	    case '>':
	    case '&':
	    case '"':
	return (result.toString());


Other Tomcat examples (source code examples)

Here is a short list of links related to this Tomcat source code file:

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