在Spring Boot中添加Tomcat服务器的LifeCycleListener可以通过以下步骤实现:
import org.apache.catalina.Lifecycle;
import org.apache.catalina.LifecycleEvent;
import org.apache.catalina.LifecycleListener;
public class MyLifecycleListener implements LifecycleListener {
@Override
public void lifecycleEvent(LifecycleEvent event) {
if (event.getType().equals(Lifecycle.START_EVENT)) {
// 在服务器启动时执行的逻辑
System.out.println("Server started");
} else if (event.getType().equals(Lifecycle.STOP_EVENT)) {
// 在服务器停止时执行的逻辑
System.out.println("Server stopped");
}
}
}
import org.apache.catalina.core.StandardServer;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
import org.springframework.boot.context.embedded.tomcat.TomcatConnectorCustomizer;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
import org.springframework.context.annotation.Bean;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Bean
public EmbeddedServletContainerCustomizer containerCustomizer() {
return new EmbeddedServletContainerCustomizer() {
@Override
public void customize(ConfigurableEmbeddedServletContainer container) {
if (container instanceof TomcatEmbeddedServletContainerFactory) {
TomcatEmbeddedServletContainerFactory tomcat = (TomcatEmbeddedServletContainerFactory) container;
tomcat.addConnectorCustomizers(new TomcatConnectorCustomizer() {
@Override
public void customize(Connector connector) {
// 添加自定义的LifecycleListener
StandardServer server = (StandardServer) connector.getService().getServer();
server.addLifecycleListener(new MyLifecycleListener());
}
});
}
}
};
}
}
在上述代码中,我们创建了一个EmbeddedServletContainerCustomizer的Bean,并在customize方法中判断容器类型是否为Tomcat,如果是,则获取TomcatEmbeddedServletContainerFactory,并通过addConnectorCustomizers方法添加TomcatConnectorCustomizer。在TomcatConnectorCustomizer的customize方法中,我们获取Tomcat的Server对象,并通过addLifecycleListener方法添加自定义的LifecycleListener。
这样,在Spring Boot应用启动时,Tomcat服务器会调用自定义的LifecycleListener的lifecycleEvent方法,并执行相应的逻辑。
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