(023) Spring Boot of three ways to modify the embedded tomcat

　　springboot tomcat embedded container 3 can be modified in a manner by tomcat.

(1) Modify application.properties file attributes, such as:

server.port=8081
server.address=127.0.0.1
server.tomcat.accesslog.enabled=true
server.tomcat.accesslog.directory=d\:/springboot/logs

　　Port: 8081

　　Binding IP: The above configuration can only enter localhost in the browser: 127.0.0.1 8081 or visit

　　Start tomcat access log

　　tomcat access log path: D: \ springboot \ logs \ access_log.2019-12-05.log, (2019-12-05 running time)

　　Other configurations can look at the source code: org.springframework.boot.autoconfigure.web.ServerProperties

(2) achieve WebServerFactoryCustomizer interface and spring fitted into a container, as follows:

　　pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.edu.spring</groupId>
    <artifactId>springboot_web</artifactId>
    <version>1.0.0</version>

    <name>springboot_web</name>
    <!-- FIXME change it to the project's website -->
    <url>http://www.example.com</url>
    <parent> 
        <groupId>org.springframework.boot</groupId> 
        <artifactId>spring-boot-starter-parent</artifactId> 
        <version>2.0.4.RELEASE</version> 
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

</project>

View Code

　　MyWebServerFactoryCustomizer.java

package com.edu.spring.springboot;

import java.io.File;

import org.apache.catalina.connector.Connector;
import org.apache.catalina.valves.AccessLogValve;
import org.apache.coyote.http11.Http11NioProtocol;
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.stereotype.Component;


@Component
public class MyWebServerFactoryCustomizer implementsWebServerFactoryCustomizer <TomcatServletWebServerFactory> { 

    @Override 
    public  void Customize (TomcatServletWebServerFactory Factory) { 
        factory.setPort ( 8888); // Tomcat port 
        factory.setBaseDirectory ( new new File ( "D: / TEMP / Tomcat")); // cache path 
        factory. addContextValves (getLogAccessLogValue ()); // set the log 
        factory.addConnectorCustomizers ( new new MyTomcatConnectorCustomizer ()); // Tomcat custom access connections 
    } 
    
    Private AccessLogValve getLogAccessLogValue () { 
        AccessLogValve log = new newAccessLogValve (); 
        log.setDirectory ( "D: / TEMP / logs"); // log path 
        log.setEnabled ( to true ); // Enable Logging 
        log.setPattern ( "Common"); // Input log format 
        log.setPrefix ( "springboot-Access-log"); // log name 
        log.setSuffix ( "TXT."); // log suffix 
        return log; 
    } 

} 

class MyTomcatConnectorCustomizer the implements TomcatConnectorCustomizer { 

    @Override 
    public  void Customize (Connector Connector) { 
        Http11NioProtocol Protocal =(Http11NioProtocol) connector.getProtocolHandler (); 
        protocal.setMaxConnections ( 20000); // Maximum number of connections 
        protocal.setMaxThreads (500); // maximum number of threads 
    } 
    
}

View Code

　　UserController.java

package com.edu.spring.springboot;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {

    @RequestMapping("/user/home")
    public String home(){
        System.out.println("============home=============");
        return "user home1";
    }

}

View Code

　　App.java

package com.edu.spring.springboot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class App    
{ 
    public static void main(String[] args) {
         SpringApplication.run(App.class, args); 
    }
} 

View Code

　　Start your browser and enter: http://192.168.43.53:8888/user/home

(3) create TomcatServletWebServerFactory of bean, as follows:

　　WebServerConfiguration.java

package com.edu.spring.springboot;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;

import org.apache.catalina.valves.AccessLogValve;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.server.ErrorPage;
import org.springframework.boot.web.servlet.ServletContextInitializer;
import org.springframework.boot.web.servlet.server.AbstractServletWebServerFactory;
import org.springframework.context.annotation.Bean;
importorg.springframework.http.HttpStatus; 

@SpringBootConfiguration 
public  class WebServerConfiguration { 
 
    @Bean 
    public AbstractServletWebServerFactory createServletWebServerFactory () { 
        TomcatServletWebServerFactory Factory = new new TomcatServletWebServerFactory (); 
        factory.setPort ( 10008); // Tomcat port 
        factory.addErrorPages ( new new the ErrorPage (HttpStatus. NOT_FOUND, "/ 404.html")); // set the status code corresponds to an error page 
        factory.addContextValves (getLogAccessLogValue ()); // set the log 
        factory.addInitializers ( new newMyServletContext ()); // perform initialization container tomcat 
        return Factory; 
    } 
    
    Private AccessLogValve getLogAccessLogValue () { 
        AccessLogValve log = new new AccessLogValve (); 
        log.setDirectory ( "D: / TEMP / logs"); // log path 
        log. setEnabled ( to true ); // enable logging 
        log.setPattern ( "the Common"); // input log formats 
        log.setPrefix ( "springboot-Access-log"); // log name 
        log.setSuffix ( "txt."); // log suffix 
        return log; 
    } 
} 

class MyServletContext implements ServletContextInitializer{

    @Override
    public void onStartup(ServletContext servletContext)
            throws ServletException {
        // TODO Auto-generated method stub
        System.out.println("------------servletContext start------------");
    }

    
}

View Code

　　Start your browser and enter: HTTP: // localhost: 10008 / the User / Home