docker部署springboot项目，连接mysql容器

入手docker部署springboot项目，记录一下学习过程，过程很简单，主要是部署过程中的收获，下面跟我一起来吧
1.创建一个springboot项目，pom引入maven-docker-plugin依赖

<plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <version>0.4.13</version>
                <configuration>
<!--                    镜像名称-->
                    <imageName>${docker.image.prefix}-docker-demo:0.0.1</imageName>
<!--                    dockerfile地址 -->
                    <dockerDirectory>${project.basedir}/src/main/docker</dockerDirectory>
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <directory>${project.build.directory}</directory>
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                </configuration>
            </plugin>

完成pom如下

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.7.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.tz</groupId>
    <artifactId>docker</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>docker</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
<!--        镜像前缀-->
        <docker.image.prefix>tz</docker.image.prefix>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- 数据库驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!-- springdata jpa -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.8</version>
            <scope>provided</scope>
        </dependency>

    </dependencies>

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

            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <version>0.4.13</version>
                <configuration>
<!--                    镜像名称-->
                    <imageName>${docker.image.prefix}-docker-demo:0.0.1</imageName>
<!--                    dockerfile地址 -->
                    <dockerDirectory>${project.basedir}/src/main/docker</dockerDirectory>
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <directory>${project.build.directory}</directory>
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                </configuration>
            </plugin>
        </plugins>
        <finalName>tz-docker-demo</finalName>
    </build>

</project>

2.编写Dockerfile 文件，文件位置src/main/docker/Dockerfile,文件内容如下

FROM frolvlad/alpine-oraclejdk8:slim
VOLUME /tmp
# 下面jar包的名称为springboot项目打包完成的jar包名称

ADD tz-docker-demo.jar app.jar
EXPOSE 8761
ENTRYPOINT ["java","-jar","/app.jar"]

3.集成jpa，方便测试mysql连通性，pom依赖第一步已经给出，下面是yml文件内容

# server
server:
  port: 8081
  servlet:
    context-path: /boot

# database
spring:
  datasource:
    url: jdbc:mysql://tz_mysql:3306/mystudy
    driver-class-name:  com.mysql.cj.jdbc.Driver
    username: root
    password: root

  # jpa
  jpa:
    hibernate:
      ddl-auto: update  # 建表策略
    show-sql: true  #显示SQL语句

yml文件解析

 jdbc:mysql://tz_mysql:3306/mystudy
 
tz_mysql： 我自己的本地mysql的docker镜像名称，此处注意，一会使用命令启动时连接容器别名要和此处一致
mystudy： 本地mysql数据库

4.编写controller

package com.tz.docker;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Date;
import java.util.List;

/**
 * @author tz
 * @Classname UserController
 * @Description
 * @Date 2019-08-15 21:08
 */
@RestController
public class UserController {
    @Autowired
    private UserInfoRepository userInfoRepository;

    @RequestMapping("/getUserInfo")
    public Object getUserInfo() {
        /*
            这里有一个大坑：使用getOne()的方法，可以查到数据。但是无法默认转化成JSON数据，返回接口直接报错
        */
        //UserInfo userInfo = userInfoRepository.getOne(1);
        for(int i = 0;i<10;i++){
            UserBean userBean = new UserBean();
            userBean.setAge(12);
            userBean.setBirthday(new Date());
            userBean.setCreatedTime(new Date());
            userBean.setJob("3333:"+i);
            userBean.setSex("1");
            userInfoRepository.save(userBean);
        }
        List<UserBean> all = userInfoRepository.findAll();
        return all;
    }
}

5.编写dao

package com.tz.docker;

import org.aspectj.weaver.ast.Var;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

/**
 * @author tz
 * @Classname UserInfoRepository
 * @Description
 * @Date 2019-08-15 21:06
 */
@Repository
public interface UserInfoRepository extends JpaRepository<UserBean, Integer> {
}

6.编写bean

package com.tz.docker;


import lombok.Data;

import javax.persistence.*;
import java.util.Date;

/**
 * @author tz
 * @Classname UserBean
 * @Description
 * @Date 2019-08-15 21:02
 */
@Data
@Entity   //注意包名
@Table(name="user_info")
public class UserBean {
    @Id
    @GeneratedValue(strategy= GenerationType.AUTO)
    private Integer id;

    private String name;
    private Integer age;
    private String sex;
    private String job;
    private Date birthday;
    private Date createdTime;
    private Date updateTime;
}

7.开始镜像容器部署，首先打包应用，如果不打包直接构建镜像会保找不到jar包的错误
打包idea中使用maven工具栏

然后第二步build镜像

用命令就是

mvn clean package docker:build

8.构建成功之后使用docker images查看构建成功的镜像

9.确认mysql容器运行

10.运行我们构建成功的容器

 docker run --rm -p 8081:8081 --name demo  --link tz_mysql:tz_mysql tz-docker-demo:0.0.1

命令解析

--rm 运行完删除容器
-p 端口映射
--name 本镜像名称
--link tz_mysql 第一个参数为mysql的docker镜像名称，tz_mysql 第二个参数为别名，此处和yml文件中连接mysql的地址保持一致 
tz-docker-demo:0.0.1 这个为我们刚刚build的镜像名称

11.好了，docker部署springboot项目就是这么简单，下面看一下成功
浏览器输入 http://localhost:8081/boot/getUserInfo
显示

下面附上项目源码
docker-demo