Spring Boot---(9)SpringBoot项目发布到docker的tomcat容器

SpringBoot项目发布到服务器,是一件很简单的事情,但是发布到服务器上docker启动的tomcat容器中,有一些坑,需要注意。

下面完整的介绍一下:将SpringBoot web项目发布到docker启动的tomcat容器中。

Spring项目发布,请参考:docker---(3)docker 发布spring web项目

SpringBoot入门,请参考:SpringBoot--从0开始学SpringBoot

Docker入门,请参考: Docker---从零开始学Docker

1.pom.xml

将打包方式改为war包

war
移除springBoot内置的tomcat,添加servlet-api

		
			org.springframework.boot
			spring-boot-starter-web
			
			
				
					org.springframework.boot
					spring-boot-starter-tomcat
				
			
		
		
		
			org.apache.tomcat
			tomcat-servlet-api
			8.0.36
			provided
		
在build中添加项目访问路径
tweb

(我第一次发布时,看了不下30篇文章,没有提到这一点,发布了20多次都没成功)

	
		
		tweb
		
			
				org.springframework.boot
				spring-boot-maven-plugin
			
		
	
2.自定义一个Servletinitializer类,继承SpringBootServletInitializer,用来启动上下文

(和启动类目录同级)

package com.jd;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

/**
 * Date 2018/1/30
 * Description:启动spring的上下文
 */

public class Servletinitializer extends SpringBootServletInitializer{

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(TwebApplication.class);
    }
}


3.添加一个测试接口,供测试访问使用

package com.jd;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

/**
 * 启动类
 */
@SpringBootApplication
@RestController
public class TwebApplication {

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


	@RequestMapping(value = "hello",method = RequestMethod.GET)
	public String testGood(String name){
		return "Welcome to tweb Mr."+ name;
	}

	@RequestMapping(value = "test",method = RequestMethod.GET)
	public String test(){
		return "Welcome to tweb";
	}
}


然后,maven clean package,打包完成后,项目的target目录下就会有此war包。

此时,项目就准备好了,接下来,就是服务器上的docker的使用了。

4.把war包上传至服务器

看tomcat下有没有其他项目,有就删除,没有就拉倒,我这里有项目,我先删除一下

不熟悉docker基本命令的,可以参考:docker---(1)常用命令

root@iZuf6axmuekh1n14dwcufmZ:~# docker exec -it tomcat2 /bin/bash
root@91ebdd8d5c65:/usr/local/tomcat# cd webapps/
root@91ebdd8d5c65:/usr/local/tomcat/webapps# ls
ROOT  docs  examples  host-manager  manager  tweb  tweb.war
root@91ebdd8d5c65:/usr/local/tomcat/webapps# rm tweb.war 
root@91ebdd8d5c65:/usr/local/tomcat/webapps# rm -rf tweb
root@91ebdd8d5c65:/usr/local/tomcat/webapps# ls
ROOT  docs  examples  host-manager  manager

然后,将war包上传至服务器

rz用不了,看这里:阿里云---阿里云服务器ECS安装jdk环境

root@iZuf6axmuekh1n14dwcufmZ:~# rz 
root@iZuf6axmuekh1n14dwcufmZ:~# ls
tweb.war
获取tomcat容器的id,我这里启动时名字叫tomcat2

root@iZuf6axmuekh1n14dwcufmZ:~# docker inspect -f '{{.Id}}' tomcat2
91ebdd8d5c652b465cc15f86cdc1c41167e211aaae9f1e42ab1032e7db8d3854
复制war包到tomcat容器的webapps下,然后查看是否复制成功

root@iZuf6axmuekh1n14dwcufmZ:~# docker cp tweb.war 91ebdd8d5c652b465cc15f86cdc1c41167e211aaae9f1e42ab1032e7db8d3854:usr/local/tomcat/webapps
root@iZuf6axmuekh1n14dwcufmZ:~# docker exec -it tomcat2 /bin/bash
root@91ebdd8d5c65:/usr/local/tomcat# ls
LICENSE  NOTICE  RELEASE-NOTES	RUNNING.txt  bin  conf	include  lib  logs  native-jni-lib  temp  webapps  work
root@91ebdd8d5c65:/usr/local/tomcat# cd webapps/
root@91ebdd8d5c65:/usr/local/tomcat/webapps# ls
ROOT  docs  examples  host-manager  manager  tweb  tweb.war
root@91ebdd8d5c65:/usr/local/tomcat/webapps# exit
exit
root@iZuf6axmuekh1n14dwcufmZ:~# 
复制成功后,重启tomcat即可

root@iZuf6axmuekh1n14dwcufmZ:~# docker restart tomcat2
tomcat2
查看状态,我这里启动时端口映射为8083

root@iZuf6axmuekh1n14dwcufmZ:~# docker ps -a
CONTAINER ID        IMAGE                COMMAND                  CREATED             STATUS                      PORTS                                                                                   NAMES
996ff5cc0db6        webcenter/activemq   "/app/run.sh"            24 hours ago        Up 16 hours                 1883/tcp, 5672/tcp, 0.0.0.0:8161->8161/tcp, 61613-61614/tcp, 0.0.0.0:61616->61616/tcp   activemq
35350de323ca        tomcat:latest        "catalina.sh run"        41 hours ago        Up 44 minutes               0.0.0.0:8085->8080/tcp                                                                  tweb_tomcat
de67495c8a87        redis:latest         "docker-entrypoint..."   12 days ago         Exited (255) 22 hours ago   0.0.0.0:6379->6379/tcp                                                                  redis1
91ebdd8d5c65        tomcat:latest        "catalina.sh run"        2 weeks ago         Up 28 seconds               0.0.0.0:8083->8080/tcp                                                                  tomcat2
f3b0f76293f9        tomcat:latest        "catalina.sh run"        2 weeks ago         Exited (255) 16 hours ago   0.0.0.0:8080->8080/tcp                                                                  tomcat1
4ce1634ce6f1        mysql:latest         "docker-entrypoint..."   6 weeks ago         Exited (255) 16 hours ago   0.0.0.0:3306->3306/tcp                                                                  mysql1
root@iZuf6axmuekh1n14dwcufmZ:~# ^C
去浏览器访问












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