com.github.spring.mvc.util.handler.UriMatchingHandlerInterceptorInterceptor.java Source code

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Here is the source code for com.github.spring.mvc.util.handler.UriMatchingHandlerInterceptorInterceptor.java

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/**
 * Copyright 2011 Ricardo Gladwell
 *
 * 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.github.spring.mvc.util.handler;

import java.lang.reflect.Method;

import javax.servlet.http.HttpServletRequest;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.servlet.HandlerInterceptor;

public class UriMatchingHandlerInterceptorInterceptor implements MethodInterceptor {

    private static final Log log = LogFactory.getLog(UriMatchingHandlerInterceptorInterceptor.class);

    @Override
    public Object invoke(MethodInvocation invocation) throws Throwable {
        boolean proceed = false;

        for (Method method : HandlerInterceptor.class.getMethods()) {
            if (MethodUtils.isOverriden(method, invocation.getMethod())) {
                proceed = true;
                break;
            }
        }

        if (proceed) {
            Includes includes = invocation.getThis().getClass().getAnnotation(Includes.class);
            Excludes excludes = invocation.getThis().getClass().getAnnotation(Excludes.class);

            String uri = null;
            for (Object argument : invocation.getArguments()) {
                if (argument instanceof HttpServletRequest) {
                    HttpServletRequest request = (HttpServletRequest) argument;
                    uri = request.getRequestURI();
                    break;
                }
            }

            if (excludes != null) {
                for (String excludePath : excludes.value()) {
                    if (HandlerUtils.servletUrlPatternMatch(excludePath, uri)) {
                        if (log.isTraceEnabled()) {
                            log.trace("Found matching exclude=[" + excludePath + "] for uri=[" + uri
                                    + "]: halt processing");
                        }

                        return true;
                    }
                }
            }

            if (includes != null) {
                for (String includePath : includes.value()) {
                    if (HandlerUtils.servletUrlPatternMatch(includePath, uri)) {
                        if (log.isTraceEnabled()) {
                            log.trace("Found matching include=[" + includePath + "] for uri=[" + uri
                                    + "]: continue processing");
                        }

                        return invocation.proceed();
                    }
                }
            }

        }

        return invocation.proceed();
    }

}