spring WebListenerHandler 源码
springboot WebListenerHandler 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/servlet/WebListenerHandler.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.Map;
import jakarta.servlet.annotation.WebListener;
import org.springframework.beans.factory.annotation.AnnotatedBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
/**
* Handler for {@link WebListener @WebListener}-annotated classes.
*
* @author Andy Wilkinson
*/
class WebListenerHandler extends ServletComponentHandler {
WebListenerHandler() {
super(WebListener.class);
}
@Override
protected void doHandle(Map<String, Object> attributes, AnnotatedBeanDefinition beanDefinition,
BeanDefinitionRegistry registry) {
BeanDefinitionBuilder builder = BeanDefinitionBuilder
.rootBeanDefinition(ServletComponentWebListenerRegistrar.class);
builder.addConstructorArgValue(beanDefinition.getBeanClassName());
registry.registerBeanDefinition(beanDefinition.getBeanClassName() + "Registrar", builder.getBeanDefinition());
}
static class ServletComponentWebListenerRegistrar implements WebListenerRegistrar {
private final String listenerClassName;
ServletComponentWebListenerRegistrar(String listenerClassName) {
this.listenerClassName = listenerClassName;
}
@Override
public void register(WebListenerRegistry registry) {
registry.addWebListeners(this.listenerClassName);
}
}
}
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- 本文标签： Spring Boot Spring Java
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