聊聊springboot2的embeded container的配置改动

序

本文主要研究下springboot2的embeded container的配置改动

springboot 1.x

import org.apache.catalina.connector.Connector;
import org.apache.coyote.ProtocolHandler;
import org.apache.coyote.http11.Http11NioProtocol;
import org.apache.tomcat.util.threads.ThreadPoolExecutor;
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.boot.web.servlet.ErrorPage;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;


@Component
public class EmbeddedTomcatConfig implements EmbeddedServletContainerCustomizer{

    @Override
    public void customize(ConfigurableEmbeddedServletContainer container) {
        TomcatEmbeddedServletContainerFactory factory = (TomcatEmbeddedServletContainerFactory)container;
        factory.addConnectorCustomizers(new TomcatConnectorCustomizer() {
            @Override
            public void customize(Connector connector) {
                Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();
                protocol.setMaxConnections(200);
                protocol.setMaxThreads(200);
                protocol.setSelectorTimeout(3000);
                protocol.setSessionTimeout(3000);
                protocol.setConnectionTimeout(3000);
            }
        });
    }
}

通过实现org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer的customize方法来实现自定义

springboot 2.x

import org.apache.catalina.connector.Connector;
import org.apache.coyote.ProtocolHandler;
import org.apache.coyote.http11.Http11NioProtocol;
import org.apache.tomcat.util.threads.ThreadPoolExecutor;
import org.springframework.boot.web.embedded.tomcat.TomcatConnectorCustomizer;
import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;


@Component
public class EmbeddedTomcatConfig implements WebServerFactoryCustomizer {

    @Override
    public void customize(ConfigurableServletWebServerFactory factory) {
        ((TomcatServletWebServerFactory)factory).addConnectorCustomizers(new TomcatConnectorCustomizer() {
            @Override
            public void customize(Connector connector) {
                Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();
                protocol.setMaxConnections(200);
                protocol.setMaxThreads(200);
                protocol.setSelectorTimeout(3000);
                protocol.setSessionTimeout(3000);
                protocol.setConnectionTimeout(3000);
            }
        });
    }
}

在2.x版本改为实现org.springframework.boot.web.server.WebServerFactoryCustomizer接口的customize方法

小结

springboot1.x的相关类如下：

• org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer
• org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer
• org.springframework.boot.context.embedded.tomcat.TomcatConnectorCustomizer
• org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory

springboot2.x的相关类如下：

• org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory
• org.springframework.boot.web.server.WebServerFactoryCustomizer
• org.springframework.boot.web.embedded.tomcat.TomcatConnectorCustomizer
• org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory

对比一下可以清楚看到相关的改动

doc

• boot-features-programmatic-embedded-container-customization