SpringBoot 2.0.0新版和SpringBoot1.5.2版本中Tomcat配置的差别（坑）

2018年春SpringBoot 2.0.0 新版本有了很多新的改变，其中Tomcat配置上也有了很大改变

1、之前老的版本TomcatEmbeddedServletContainerFactory取的是这个类

2、在SpringBoot 2.0.0框架中，已经没有类TomcatEmbeddedServletContainerFactory了

3、在老版本的Tomcat配置中，构造tomcatFactory的bean

    @Bean
    public TomcatEmbeddedServletContainerFactory tomcatFactory() {
        TomcatEmbeddedServletContainerFactory tomcatFactory = new TomcatEmbeddedServletContainerFactory();
        tomcatFactory.addConnectorCustomizers(new GwsTomcatConnectionCustomizer());
        return tomcatFactory;
    }

4、那么早SpringBoot 2.0.0中该怎么构建呢？
去到SpringBoot官方文档这里写链接内容、找到Tomcat配置

5、最新的已经有了全新的类了

6、事例

7、那么就可以用全新的ServletWebServerFactory类来构造Tomcat的配置了

    @Bean
    public ServletWebServerFactory servletContainer() {
        TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory();
        tomcat.addConnectorCustomizers(new GwsTomcatConnectionCustomizer());
        return tomcat;
    }

8、最后附上全新的Tomcat配置

package com.gws.configuration;

import org.apache.catalina.connector.Connector;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.web.embedded.tomcat.TomcatConnectorCustomizer;
import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.servlet.MultipartConfigFactory;
import org.springframework.boot.web.servlet.server.ServletWebServerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.servlet.MultipartConfigElement;


/**
 * 使用tomcat配置
 *
 * @version 
 * @author 
 * 
 */
@Configuration
public class TomcatConfig {

    @Value("${spring.server.port}")
    private String port;
    @Value("${spring.server.acceptorThreadCount}")
    private String acceptorThreadCount;
    @Value("${spring.server.minSpareThreads}")
    private String minSpareThreads;
    @Value("${spring.server.maxSpareThreads}")
    private String maxSpareThreads;
    @Value("${spring.server.maxThreads}")
    private String maxThreads;
    @Value("${spring.server.maxConnections}")
    private String maxConnections;
    @Value("${spring.server.protocol}")
    private String protocol;
    @Value("${spring.server.redirectPort}")
    private String redirectPort;
    @Value("${spring.server.compression}")
    private String compression;
    @Value("${spring.server.connectionTimeout}")
    private String connectionTimeout;

    @Value("${spring.server.MaxFileSize}")
    private String MaxFileSize;
    @Value("${spring.server.MaxRequestSize}")
    private String MaxRequestSize;

    @Bean
    public ServletWebServerFactory servletContainer() {
        TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory();
        tomcat.addConnectorCustomizers(new GwsTomcatConnectionCustomizer());
        return tomcat;
    }

    @Bean
    public MultipartConfigElement multipartConfigElement() {
        MultipartConfigFactory factory = new MultipartConfigFactory();
        //  单个数据大小
        factory.setMaxFileSize(MaxFileSize); // KB,MB
        /// 总上传数据大小
        factory.setMaxRequestSize(MaxRequestSize);
        return factory.createMultipartConfig();
    }

    /**
     *
     * 默认http连接
     *
     * @version
     * @author liuyi  2016年7月20日 下午7:59:41
     *
     */
    public class GwsTomcatConnectionCustomizer implements TomcatConnectorCustomizer {

        public GwsTomcatConnectionCustomizer() {
        }

        @Override
        public void customize(Connector connector) {
            connector.setPort(Integer.valueOf(port));
            connector.setAttribute("connectionTimeout", connectionTimeout);
            connector.setAttribute("acceptorThreadCount", acceptorThreadCount);
            connector.setAttribute("minSpareThreads", minSpareThreads);
            connector.setAttribute("maxSpareThreads", maxSpareThreads);
            connector.setAttribute("maxThreads", maxThreads);
            connector.setAttribute("maxConnections", maxConnections);
            connector.setAttribute("protocol", protocol);
            connector.setAttribute("redirectPort", "redirectPort");
            connector.setAttribute("compression", "compression");
        }
    }
}

9、最后在application.properties，进行配置

#嵌入tomcat配置
spring.server.port=8095
#和CPU数
spring.server.acceptorThreadCount=4
spring.server.minSpareThreads=50
spring.server.maxSpareThreads=50
spring.server.maxThreads=1000
spring.server.maxConnections=10000
#10秒超时
spring.server.connectionTimeout=10000
spring.server.protocol=org.apache.coyote.http11.Http11Nio2Protocol
spring.server.redirectPort=443
spring.server.compression=on
#文件请求大小
spring.server.MaxFileSize=300MB
spring.server.MaxRequestSize=500MB

10、好了，搞定了