spring WebFilterHandler 源码
springboot WebFilterHandler 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/servlet/WebFilterHandler.java
/*
* Copyright 2012-2021 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
*
* https://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.boot.web.servlet;
import java.util.Arrays;
import java.util.EnumSet;
import java.util.Map;
import jakarta.servlet.DispatcherType;
import jakarta.servlet.annotation.WebFilter;
import org.springframework.beans.factory.annotation.AnnotatedBeanDefinition;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.util.StringUtils;
/**
* Handler for {@link WebFilter @WebFilter}-annotated classes.
*
* @author Andy Wilkinson
*/
class WebFilterHandler extends ServletComponentHandler {
WebFilterHandler() {
super(WebFilter.class);
}
@Override
public void doHandle(Map<String, Object> attributes, AnnotatedBeanDefinition beanDefinition,
BeanDefinitionRegistry registry) {
BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(FilterRegistrationBean.class);
builder.addPropertyValue("asyncSupported", attributes.get("asyncSupported"));
builder.addPropertyValue("dispatcherTypes", extractDispatcherTypes(attributes));
builder.addPropertyValue("filter", beanDefinition);
builder.addPropertyValue("initParameters", extractInitParameters(attributes));
String name = determineName(attributes, beanDefinition);
builder.addPropertyValue("name", name);
builder.addPropertyValue("servletNames", attributes.get("servletNames"));
builder.addPropertyValue("urlPatterns", extractUrlPatterns(attributes));
registry.registerBeanDefinition(name, builder.getBeanDefinition());
}
private EnumSet<DispatcherType> extractDispatcherTypes(Map<String, Object> attributes) {
DispatcherType[] dispatcherTypes = (DispatcherType[]) attributes.get("dispatcherTypes");
if (dispatcherTypes.length == 0) {
return EnumSet.noneOf(DispatcherType.class);
}
if (dispatcherTypes.length == 1) {
return EnumSet.of(dispatcherTypes[0]);
}
return EnumSet.of(dispatcherTypes[0], Arrays.copyOfRange(dispatcherTypes, 1, dispatcherTypes.length));
}
private String determineName(Map<String, Object> attributes, BeanDefinition beanDefinition) {
return (String) (StringUtils.hasText((String) attributes.get("filterName")) ? attributes.get("filterName")
: beanDefinition.getBeanClassName());
}
}
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- 本文标签： Spring Boot Java Spring
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