SpringBoot优化内嵌的Tomcat

SpringBoot测试版本

<parent>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-parent</artifactId>    <version>1.3.3.RELEASE</version></parent><dependencies>    <dependency>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-web</artifactId>    </dependency></dependencies>

SpringBoot默认使用的是Tomcat作为web server

springboot中默认可以通过配置如下参数设置内嵌容器Tomcat的端口，最大线程数等等
server.port=8081
server.tomcat.max-threads=1000

但是，无法设置最大连接数，而最大连接数直接影响到Tomcat的性能，如何调整这个最大连接数呢？

以下有三种方法

一：

package com.web.server;import org.apache.catalina.connector.Connector;import org.apache.coyote.http11.Http11NioProtocol;import org.springframework.boot.context.embedded.EmbeddedServletContainer;import org.springframework.boot.context.embedded.ServletContextInitializer;import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;import org.springframework.stereotype.Component;@Component()public class MyEmbeddedServletContainerFactory extends TomcatEmbeddedServletContainerFactory{public EmbeddedServletContainer getEmbeddedServletContainer(ServletContextInitializer... initializers){//设置端口this.setPort(8081);return super.getEmbeddedServletContainer(initializers);}protected void customizeConnector(Connector connector){super.customizeConnector(connector);Http11NioProtocol protocol = (Http11NioProtocol)connector.getProtocolHandler();//设置最大连接数protocol.setMaxConnections(2000);//设置最大线程数protocol.setMaxThreads(2000);protocol.setConnectionTimeout(30000);}}

二：

package com.web.server;import org.apache.catalina.connector.Connector;import org.apache.coyote.http11.Http11NioProtocol;import org.springframework.boot.context.embedded.EmbeddedServletContainerFactory;import org.springframework.boot.context.embedded.tomcat.TomcatConnectorCustomizer;import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;@Configurationpublic class WebServerConfiguration{@Beanpublic EmbeddedServletContainerFactory createEmbeddedServletContainerFactory(){TomcatEmbeddedServletContainerFactory tomcatFactory = new TomcatEmbeddedServletContainerFactory();tomcatFactory.setPort(8081);tomcatFactory.addConnectorCustomizers(new MyTomcatConnectorCustomizer());return tomcatFactory;}}class MyTomcatConnectorCustomizer implements TomcatConnectorCustomizer{public void customize(Connector connector){Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();//设置最大连接数protocol.setMaxConnections(2000);//设置最大线程数protocol.setMaxThreads(2000);protocol.setConnectionTimeout(30000);}}

三：

package com.web.server;import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;@Configurationpublic class WebServerConfiguration{@Beanpublic EmbeddedServletContainerCustomizer createEmbeddedServletContainerCustomizer(){return new MyEmbeddedServletContainerCustomizer();}}class MyEmbeddedServletContainerCustomizer implements EmbeddedServletContainerCustomizer{public void customize(ConfigurableEmbeddedServletContainer container){TomcatEmbeddedServletContainerFactory tomcatFactory = (TomcatEmbeddedServletContainerFactory)container;tomcatFactory.setPort(8081);//下面的操作可以参照上面的方法}}

最后，如果发现没有生效，就把application.properties配置里面关于Tomcat的一些配置(server.*)全部删掉，就OK了。