org.apache.catalina.util.RequestUtil Maven / Gradle / Ivy
/*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.catalina.util;
import javax.servlet.http.HttpServletRequest;
/**
* General purpose request parsing and encoding utility methods.
*
* @author Craig R. McClanahan
* @author Tim Tye
*/
public final class RequestUtil {
/**
* Build an appropriate return value for
* {@link HttpServletRequest#getRequestURL()} based on the provided
* request object. Note that this will also work for instances of
* {@link javax.servlet.http.HttpServletRequestWrapper}.
*
* @param request The request object for which the URL should be built
*
* @return The request URL for the given request object
*/
public static StringBuffer getRequestURL(HttpServletRequest request) {
StringBuffer url = new StringBuffer();
String scheme = request.getScheme();
int port = request.getServerPort();
if (port < 0) {
// Work around java.net.URL bug
port = 80;
}
url.append(scheme);
url.append("://");
url.append(request.getServerName());
if ((scheme.equals("http") && (port != 80))
|| (scheme.equals("https") && (port != 443))) {
url.append(':');
url.append(port);
}
url.append(request.getRequestURI());
return url;
}
}