/*
* Copyright 2002-2010 the original author or authors.
*
* Licensed 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.springframework.web.servlet.mvc.annotation;
import java.util.Iterator;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.springframework.http.MediaType;
import org.springframework.util.ObjectUtils;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.util.WebUtils;
/**
* Helper class for annotation-based request mapping.
*
* @author Juergen Hoeller
* @author Arjen Poutsma
* @since 2.5.2
*/
abstract class ServletAnnotationMappingUtils {
/**
* Check whether the given request matches the specified request methods.
* @param methods the HTTP request methods to check against
* @param request the current HTTP request to check
*/
public static boolean checkRequestMethod(RequestMethod[] methods, HttpServletRequest request) {
if (ObjectUtils.isEmpty(methods)) {
return true;
}
for (RequestMethod method : methods) {
if (method.name().equals(request.getMethod())) {
return true;
}
}
return false;
}
/**
* Check whether the given request matches the specified parameter conditions.
* @param params the parameter conditions, following
* {@link org.springframework.web.bind.annotation.RequestMapping#params() RequestMapping.#params()}
* @param request the current HTTP request to check
*/
public static boolean checkParameters(String[] params, HttpServletRequest request) {
if (!ObjectUtils.isEmpty(params)) {
for (String param : params) {
int separator = param.indexOf('=');
if (separator == -1) {
if (param.startsWith("!")) {
if (WebUtils.hasSubmitParameter(request, param.substring(1))) {
return false;
}
}
else if (!WebUtils.hasSubmitParameter(request, param)) {
return false;
}
}
else {
boolean negated = separator > 0 && param.charAt(separator - 1) == '!';
String key = !negated ? param.substring(0, separator) : param.substring(0, separator - 1);
String value = param.substring(separator + 1);
if (!value.equals(request.getParameter(key))) {
return negated;
}
}
}
}
return true;
}
/**
* Check whether the given request matches the specified header conditions.
* @param headers the header conditions, following
* {@link org.springframework.web.bind.annotation.RequestMapping#headers() RequestMapping.headers()}
* @param request the current HTTP request to check
*/
public static boolean checkHeaders(String[] headers, HttpServletRequest request) {
if (!ObjectUtils.isEmpty(headers)) {
for (String header : headers) {
int separator = header.indexOf('=');
if (separator == -1) {
if (header.startsWith("!")) {
if (request.getHeader(header.substring(1)) != null) {
return false;
}
}
else if (request.getHeader(header) == null) {
return false;
}
}
else {
boolean negated = separator > 0 && header.charAt(separator - 1) == '!';
String key = !negated ? header.substring(0, separator) : header.substring(0, separator - 1);
String value = header.substring(separator + 1);
if (isMediaTypeHeader(key)) {
List<MediaType> requestMediaTypes = MediaType.parseMediaTypes(request.getHeader(key));
List<MediaType> valueMediaTypes = MediaType.parseMediaTypes(value);
boolean found = false;
for (Iterator<MediaType> valIter = valueMediaTypes.iterator(); valIter.hasNext() && !found;) {
MediaType valueMediaType = valIter.next();
for (Iterator<MediaType> reqIter = requestMediaTypes.iterator();
reqIter.hasNext() && !found;) {
MediaType requestMediaType = reqIter.next();
if (valueMediaType.includes(requestMediaType)) {
found = true;
}
}
}
if (!found) {
return negated;
}
}
else if (!value.equals(request.getHeader(key))) {
return negated;
}
}
}
}
return true;
}
private static boolean isMediaTypeHeader(String headerName) {
return "Accept".equalsIgnoreCase(headerName) || "Content-Type".equalsIgnoreCase(headerName);
}
}
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