docker部署Tomcat，springboot项目

1. docker安装Tomcat

   1. docker pull tomcat
      docker run -p 8080:8080 --name mytomcat tomcat:latest # 提取镜像，生成容器，并命名容器为：mytomcat

   2. docker ps
2. docker安装jdk
   1. 拷贝本地jdk到docker 

      docker cp *****.gz mytomcat:/root

   2. 进入容器配置环境变量

      docker exec -it mytomcat bash
      apt-get update
      apt-get install vim
      export JAVA_HOME=/usr/local/java/jdk1.8.0_211
      export PATH=$JAVA_HOME/bin:$PATH
      刷新配置：source ~/.bashrc，并用java -version测试是否安装成功。

3. 部署web应用
   1. 上传war包

      docker cp atp.war mytomcat:/usr/local/tomcat/webapps或者安装rz
      docker restart mytomcat

   2. 建立镜像

      docker commit -a 'cbj' -m 'first version' mytomcat mytomcat:v1
      #docker  commit -m  “提交说明文字”  -a  “作者”   要提交的容器名  提交后的镜像名：提交后的镜像tag名  

   3. 打包成功后，需要打标签，完成后，推入私有库，拉取仓库

      docker tag mytomcat 112.126.64.183:5000/mytomcat
      tag语法：[容器ID|容器名称][仓库][标签]
      docker push 112.126.64.183:5000/mytomcat
      docker pull 112.126.64.183:5000/mytomcat
      docker run -p 8080:8080 --name mytomcat 112.126.64.183:5000/mytomcat:v1

   4. 仓库安装见上一篇
4. 遇到的问题
   1. Tomcat9.0以上无法访问8080
      1. 这是tomcat版本问题，webapps下是空的，所以访问不到首页，我默认最新版latest，是tomcat9，后面换成了8.0.52，就有用了。。。
      2. 发现旁边还有个webapps.dist的文件,进入才发现原本应该在webapps文件中的文件都在webapps.dist文件中,现在也不知道为什么。将webapps.dist重命名成webapps即可,原来的webapps(空文件)可以删除或者命名成其他的名字既:mv webapps.dist webapps
   2. web项目无法启动
      1. 报错信息：

         Description:
         
         An attempt was made to call a method that does not exist. The attempt was made from the following location:
         
             org.hibernate.validator.internal.xml.config.ValidationBootstrapParameters.<init>(ValidationBootstrapParameters.java:63)
         
         The following method did not exist:
         
             javax.validation.BootstrapConfiguration.getClockProviderClassName()Ljava/lang/String;
         
         The method's class, javax.validation.BootstrapConfiguration, is available from the following locations:
         
             jar:file:/D:/Dev/repositories/javax/javaee-api/7.0/javaee-api-7.0.jar!/javax/validation/BootstrapConfiguration.class
             jar:file:/D:/Dev/repositories/javax/validation/validation-api/2.0.1.Final/validation-api-2.0.1.Final.jar!/javax/validation/BootstrapConfiguration.class
         
         It was loaded from the following location:
         
             file:/D:/Dev/repositories/javax/javaee-api/7.0/javaee-api-7.0.jar
         
         

         原因是javaee版本问题，升级为8.0就可以了

          <dependency>
              <groupId>javax</groupId>
              <artifactId>javaee-api</artifactId>
              <version>8.0</version>
         </dependency>
         

          

   3. springboot项目修改
      1. 启动类要继承SpringBootServletInitializer接口
      2. 剔除依赖

         public class Application extends SpringBootServletInitializer {
         
             @Override
             protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
                 return builder.sources(Application.class);
             }
         
             public static void main(String[] args) {
                 new SpringApplicationBuilder(Application.class).web(true).run(args);
             }
         }

         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-start-tomcat</artifactId>
             <scope>provided</scope>
         </dependency>

         未完待续……