/*
* Copyright (c) 2002-2012 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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 com.alibaba.citrus.webx.util;
import static com.alibaba.citrus.util.BasicConstant.*;
import static com.alibaba.citrus.util.CollectionUtil.*;
import static com.alibaba.citrus.util.ObjectUtil.*;
import static com.alibaba.citrus.util.StringUtil.*;
import java.util.List;
import java.util.regex.Pattern;
import javax.servlet.http.HttpServletRequest;
import com.alibaba.citrus.util.ToStringBuilder;
import com.alibaba.citrus.util.regex.PathNameWildcardCompiler;
/**
* 用来匹配和过滤<code>request.getRequestURI()</code>。
*
* @author Michael Zhou
*/
public class RequestURIFilter {
private final String[] uris;
private final Pattern[] patterns;
public RequestURIFilter(String uris) {
List<String> names = createLinkedList();
List<Pattern> patterns = createLinkedList();
for (String uri : split(defaultIfNull(uris, EMPTY_STRING), ", \r\n")) {
uri = trimToNull(uri);
if (uri != null) {
names.add(uri);
patterns.add(PathNameWildcardCompiler.compilePathName(uri));
}
}
if (!patterns.isEmpty()) {
this.uris = names.toArray(new String[names.size()]);
this.patterns = patterns.toArray(new Pattern[patterns.size()]);
} else {
this.uris = EMPTY_STRING_ARRAY;
this.patterns = null;
}
}
public boolean matches(HttpServletRequest request) {
if (patterns != null) {
String requestURI = request.getRequestURI();
for (Pattern pattern : patterns) {
if (pattern.matcher(requestURI).find()) {
return true;
}
}
}
return false;
}
@Override
public String toString() {
return new ToStringBuilder().append("FilterOf").append(uris).toString();
}
}