有没有更简单的方法将mysql驱动程序加载到类路径？

Question

我正在尝试使用命令行类路径方法，但是docker run继续提供未找到的类错误？有没有更简单的方法将mysql驱动程序加载到类路径？

错误：错误：找不到或加载主类com.smartworks.client.RDSConnectionTest引起原因：java.lang.ClassNotFoundException：

FROM openjdk

COPY src src

WORKDIR src

运行mkdir -p目标

COPY target / mysql-connector-java-8.0.20.jar / target /

运行javac ./com/smartworks/client / *。java

ENTRYPOINT [“ java”，“-cp”，“ mysql-connector-java-8.0.20.jar：target / *”，“ com.smartworks.client.RDSConnectionTest”]

如果我从入口点删除驱动程序类路径，它会为com.mysql.cj.jdbc.Driver提供未找到的类！

Answer 1

正如我所看到的，您的Dockerfile中存在问题，请在Dockerfile下查看并根据其进行更改。

FROM openjdk

WORKDIR src # Good to define WORKDIR before any operation

COPY src . # As you are only copying src and change dest to Current directory which is src by default as WORKDIR is mentioned above

RUN mkdir -p target

RUN ls -lart #Add a debug to see if everyfile is present
COPY target/mysql-connector-java-8.0.20.jar target/ # Instead of /target , you have to copy to target

RUN javac ./com/smartworks/client/*.java 

ENTRYPOINT ["java","-cp", "mysql-connector-java-8.0.20.jar:target/*","com.smartworks.client.RDSConnectionTest"]