Failed to execute goal org.codehaus.mojo

Maven 构建失败：

　　报错：Failed to execute goal org.codehaus.mojo:tomcat-maven-plugin:1.1:redeploy (default-cli) on project poc: Cannot invoke Tomcat manager: Connection refused -> [Help 1]

 

　　原因：Maven构建前需手动启Tomcat，先启动Tomcat再构建