SpringBoot从入门到精通教程（五）- 内嵌Tomcat自定义配置用法

ゝ一世哀愁。 2022-01-15 02:13 430阅读 0赞

# 需求背景 #

> 针对框架内嵌的Tomcat，实现自定义配置用法：
> 
> 1. 可以通过application.yml文件实现
> 
> 2. 可以通过代码，实现自定义配置

# 技术点 #

两个技术点

**1. .yml文件格式用法**

配置Tomcat参数，框架自动识别和加载

**2. TomcatServletWebServerFactory对象**

自定义实现Tomcat配置

# 功能介绍 #

功能技术点：

> 1. Tomcat容器配置用法，使用.yml文件方式  
> 2. 设置tomcat的最大连接数和最大并发数  
> 3. Springboot1和Springboot2版本之间的差异用法

# 代码演示 #

**1. Tomcat容器配置用法，使用.yml文件方式**

# tomcat
    server:
      tomcat: 
        # 最大线程数
        max-threads: 2
        # 最大连接数
        max-connections: 10
      # 监听端口
      port: 9090

**2. Springboot2代码实现**

package com.md.demo;
    
    import org.apache.catalina.connector.Connector;
    import org.apache.coyote.http11.Http11NioProtocol;
    import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
    import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    /**
     * 自定义实现Tomcat配置
     * 
     * @author Minbo
     * 
     */
    @Configuration
    public class MyTomcatCustomizer {
    
    	@Bean
    	public ConfigurableServletWebServerFactory configurableServletWebServerFactory() {
    		TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory();
    		tomcat.addAdditionalTomcatConnectors(createConnector());
    		return tomcat;
    	}
    
    	private Connector createConnector() {
    		Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
    		Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();
    		connector.setPort(8090);
    		// 最大线程数
    		protocol.setMaxThreads(2);
    		// 最大连接数
    		protocol.setMaxConnections(10);
    		return connector;
    	}
    }

注：为了验证两者的差别，我故意把端口分别用了8090和9090端口

**验证参数配置是否生效：**

我这里故意设置了maxThreads为2，可以调用接口，验证配置是否生效，如下图

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70][]

**3. 其他参数说明**

可以进入源码查看

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70 1][]

附加其他实现

**4. Springboot1代码实现**

package com.yfax.webapi;
    
    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.tomcat.TomcatEmbeddedServletContainerFactory;
    import org.springframework.boot.web.servlet.ServletContextInitializer;
    import org.springframework.stereotype.Component;
    
    @Component
    public class WebEmbedContainer extends TomcatEmbeddedServletContainerFactory {
    
    	public EmbeddedServletContainer getEmbeddedServletContainer(ServletContextInitializer... initializers) {
    		return super.getEmbeddedServletContainer(initializers);
    	}
    
    	protected void customizeConnector(Connector connector) {
    		super.customizeConnector(connector);
    		Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();
    		// 设置最大线程数
    		protocol.setMaxThreads(350);
    		// 设置最大连接数
    		protocol.setMaxConnections(500);
    		protocol.setAcceptorThreadCount(500);
    		protocol.setMinSpareThreads(350);
    		// 设置超时时间
    		protocol.setConnectionTimeout(5000);
    		protocol.setKeepAliveTimeout(5000);
    	}
    }

# 完整源码下载 #

我的[Github源码地址：][Github]

[https://github.com/hemin1003/spring-boot-study/tree/master/spring-boot2-study/spring-boot2-parent][Github]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70 2][]

# 官方资料 #

![20190614183140896.png][]

官方代码[链接地址][Link 1]，代码如下

@Bean
    public ServletWebServerFactory servletContainer() {
    	TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory();
    	tomcat.addAdditionalTomcatConnectors(createSslConnector());
    	return tomcat;
    }
    
    private Connector createSslConnector() {
    	Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
    	Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();
    	try {
    		File keystore = new ClassPathResource("keystore").getFile();
    		File truststore = new ClassPathResource("keystore").getFile();
    		connector.setScheme("https");
    		connector.setSecure(true);
    		connector.setPort(8443);
    		protocol.setSSLEnabled(true);
    		protocol.setKeystoreFile(keystore.getAbsolutePath());
    		protocol.setKeystorePass("changeit");
    		protocol.setTruststoreFile(truststore.getAbsolutePath());
    		protocol.setTruststorePass("changeit");
    		protocol.setKeyAlias("apitester");
    		return connector;
    	}
    	catch (IOException ex) {
    		throw new IllegalStateException("can't access keystore: [" + "keystore"
    				+ "] or truststore: [" + "keystore" + "]", ex);
    	}
    }

# 下一章教程 #

[SpringBoot从入门到精通教程（六）- Mysql和Mybatis+XML用法详解][SpringBoot_- Mysql_Mybatis_XML]

# 该系列教程 #

[SpringBoot从入门到精通教程][SpringBoot]

至此，全部介绍就结束了

\------------------------------------------------------

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[我的开源项目集Github][Github 1]

期望和大家一起学习，共同进步，共勉，O(∩\_∩)O谢谢

欢迎交流问题，可加个人QQ 469580884，

或者，加我的群号 **751925591**，一起探讨交流问题

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![20180411181545874][]

如果觉得内容赞，您可以请我喝杯咖啡：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9oZW1pbi5ibG9nLmNzZG4ubmV0_size_16_color_FFFFFF_t_70][]        ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9oZW1pbi5ibG9nLmNzZG4ubmV0_size_16_color_FFFFFF_t_70 1][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70]: /images/20220114/a9ec2f4c4e0e4466b557d6c0ee7838c6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70 1]: /images/20220114/b959a97d047a4358840eba86643f2903.png
[Github]: https://github.com/hemin1003/spring-boot-study/tree/master/spring-boot2-study/spring-boot2-parent
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70 2]: /images/20220114/8a021bd23d904a7b880bc8b646255fcb.png
[20190614183140896.png]: /images/20220114/7e687e1e104c44de80fb9ab75144dad9.png
[Link 1]: https://docs.spring.io/spring-boot/docs/2.0.6.RELEASE/reference/html/howto-embedded-web-servers.html#howto-enable-multiple-connectors-in-tomcat
[SpringBoot_- Mysql_Mybatis_XML]: https://blog.csdn.net/hemin1003/article/details/93123524
[SpringBoot]: https://hemin.blog.csdn.net/column/info/40170
[Link 2]: http://heminit.com/about/
[Github 1]: https://github.com/hemin1003
[20180411181545874]: /images/20220114/af5cf108c6424022bcb3057db692b799.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9oZW1pbi5ibG9nLmNzZG4ubmV0_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20190816110426562.jpeg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9oZW1pbi5ibG9nLmNzZG4ubmV0,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9oZW1pbi5ibG9nLmNzZG4ubmV0_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20190816110923699.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9oZW1pbi5ibG9nLmNzZG4ubmV0,size_16,color_FFFFFF,t_70