Docker 部署spring web项目

1.项目打包为war包

2.启动一个tomcat容器，具体如下：

root@iZuf6axmuekh1n14dwcufmZ:~# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

f3b0f76293f9 tomcat:latest "catalina.sh run" 8 hours ago Up About an hour 0.0.0.0:8080->8080/tcp tomcat1

4ce1634ce6f1 mysql:latest "docker-entrypoint..." 4 weeks ago Up 4 weeks 0.0.0.0:3306->3306/tcp mysql1

root@iZuf6axmuekh1n14dwcufmZ:~# docker run --name tomcat2 -d -p 8083:8080 tomcat:latest

91ebdd8d5c652b465cc15f86cdc1c41167e211aaae9f1e42ab1032e7db8d3854

root@iZuf6axmuekh1n14dwcufmZ:~# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

91ebdd8d5c65 tomcat:latest "catalina.sh run" 9 seconds ago Up 9 seconds 0.0.0.0:8083->8080/tcp tomcat2

f3b0f76293f9 tomcat:latest "catalina.sh run" 8 hours ago Up About an hour 0.0.0.0:8080->8080/tcp tomcat1

4ce1634ce6f1 mysql:latest "docker-entrypoint..." 4 weeks ago Up 4 weeks 0.0.0.0:3306->3306/tcp mysql1

root@iZuf6axmuekh1n14dwcufmZ:~#

关键命令：docker run --name tomcat2 -d -p 8083:8080 tomcat:latest

这里，将宿主的8083端口映射到tomcat容器的8080端口，启动后别名为tomcat2。

（此时，访问ip:8083就可以访问到此tomcat了）

3.上传war包到服务器上，然后复制到此tomcat容器的webapps目录下，具体如下：

root@iZuf6axmuekh1n14dwcufmZ:~# rz

rz waiting troot@iZuf6axmuekh1n14dwcufmZ:~# rz

root@iZuf6axmuekh1n14dwcufmZ:~# ls

tmall2.war

如何上传本地文件到服务器，点击这里

4.将此文件复制到刚才启动的tomcat2容器的webapps下，具体如下：

root@iZuf6axmuekh1n14dwcufmZ:~# docker cp tmall2.war 91ebdd8d5c652b465cc15f86cdc1c41167e211aaae9f1e42ab1032e7db8d3854:usr/local/tomcat/webapps

    root@iZuf6axmuekh1n14dwcufmZ:~# docker exec -it tomcat2 /bin/bash 进入容器

    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 tmall2 tmall2.war

    root@91ebdd8d5c65:/usr/local/tomcat/webapps# exit

91ebdd8d5c652b465cc15f86cdc1c41167e211aaae9f1e42ab1032e7db8d3854，为此容器的id的全称，如果不知道，获取命令为：

docker inspect -f '{{.Id}}' tomcat2

root@iZuf6axmuekh1n14dwcufmZ:~# docker inspect -f '{{.Id}}' tomcat2

91ebdd8d5c652b465cc15f86cdc1c41167e211aaae9f1e42ab1032e7db8d3854

5.重启tomcat2

root@iZuf6axmuekh1n14dwcufmZ:~# docker restart tomcat2

tomcat2

6.去浏览器访问：

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

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<packaging>war</packaging>

移除springBoot内置的tomcat，添加servlet-api

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<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-servlet-api</artifactId>
<version>8.0.36</version>
<scope>provided</scope>
</dependency>

在build中添加项目访问路径

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<finalName>tweb</finalName>

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<build>
<finalName>tweb</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

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)

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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

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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

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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

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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

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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

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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

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root@iZuf6axmuekh1n14dwcufmZ:~# docker restart tomcat2
tomcat2

查看状态，我这里启动时端口映射为8083

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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

Docker 部署spring web项目

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