The goal you specified requires a project to execute but there is no POM in this directory

我的命令是

mvn install:install-file -Dfile=D:\cao\gofastdfs-2.0.jar  -DgroupId=com.aaa-DartifactId=gofastdfs -Dversion=2.0 

找遍了百度才找到正确写法：参数需要用引号引起来

mvn install:install-file "-Dfile=D:\cao\gofastdfs-2.0.jar"  "-DgroupId=com.aaa" "-DartifactId=gofastdfs" "-Dversion=2.0" 

执行以后果然没报这个错了，但是却报了另外一个错误：

Failed to execute goal org.apache.maven.plugins:maven-install-plugin:2.4:install-file 
(default-cli) on project standalone-pom: The artifact information is incomplete or not valid:

![在这里插入图片描述](https://img-blog.csdnimg.cn/3e87813a98e4476ab7558ad5861941a4.png
后面才发现需要加上 “-Dpackaging=jar”

完整的命令为：

mvn install:install-file "-Dfile=D:\cao\gofastdfs-2.0.jar"  "-DgroupId=com.aaa" "-DartifactId=gofastdfs" "-Dversion=2.0" "-Dpackaging=jar

完美解决！