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Cattle framework webmvc component pom
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/*
 * Copyright (C) 2018 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.cattleframework.webmvc;

import java.time.Duration;
import java.util.List;

import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.cattleframework.aop.utils.ReflectionsFactory;
import org.cattleframework.aop.utils.SimpleReflectUtils;
import org.cattleframework.web.WebProperties;
import org.cattleframework.web.WebProperties.StaticResource;
import org.cattleframework.web.WebProperties.StaticResourceCache;
import org.cattleframework.web.annotation.MethodArgumentResolver;
import org.springframework.http.CacheControl;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * Web Mvc配置
 * 
 * @author orange
 *
 */
class CattleWebMvcConfigurer implements WebMvcConfigurer {

    private final WebProperties webProperties;

    public CattleWebMvcConfigurer(WebProperties webProperties) {
	this.webProperties = webProperties;
    }

    @Override
    public void addArgumentResolvers(List resolvers) {
	List> methodArgumentResolverClasses = ReflectionsFactory
		.getTypesAnnotatedWith(MethodArgumentResolver.class);
	if (CollectionUtils.isNotEmpty(methodArgumentResolverClasses)) {
	    methodArgumentResolverClasses.forEach(methodArgumentResolverClass -> resolvers
		    .add((HandlerMethodArgumentResolver) SimpleReflectUtils.instance(methodArgumentResolverClass)));
	}
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
	List staticResources = webProperties.getStaticResources();
	if (CollectionUtils.isEmpty(staticResources)) {
	    return;
	}
	StaticResourceCache cache = webProperties.getStaticResourceCache();
	CacheControl cacheControl = null;
	if (cache != null) {
	    Duration maxAge = cache.getMaxAge();
	    if (maxAge != null) {
		if (maxAge.getSeconds() > 0L) {
		    cacheControl = CacheControl.maxAge(maxAge);
		    if (cache.isMustRevalidate()) {
			cacheControl = cacheControl.mustRevalidate();
		    }
		} else if (maxAge.getSeconds() == 0L) {
		    cacheControl = cache.isNoStore() ? CacheControl.noStore() : CacheControl.noCache();
		}
	    }
	    if (cacheControl != null) {
		if (cache.isCachePrivate()) {
		    cacheControl = cacheControl.cachePrivate();
		}
		if (cache.isCachePublic()) {
		    cacheControl = cacheControl.cachePublic();
		}
		if (cache.isNoTransform()) {
		    cacheControl = cacheControl.noTransform();
		}
	    }
	}
	for (StaticResource staticResource : staticResources) {
	    if (StringUtils.isNotBlank(staticResource.getUrlPattern())
		    && CollectionUtils.isNotEmpty(staticResource.getDirectoryLocations())) {
		ResourceHandlerRegistration registration = registry.addResourceHandler(staticResource.getUrlPattern())
			.addResourceLocations(staticResource.getDirectoryLocations().toArray(new String[0]));
		if (cacheControl != null) {
		    registration.setCacheControl(cacheControl);
		}
	    }
	}
    }
}