启动报Failed to execute goal org.apache.tomcat.maven:tomcat7-maven-plugin:2.1:run (default-cli) on project jty: Could not start Tomcat: Failed to start component [StandardServer[-1]]: Failed to start component [StandardService[Tomcat]]: Failed to start component [StandardEngine[Tomcat]]: A child container failed during start -> [Help 1]，解决方案是将javax.servlet-api依赖包的scope改为provided，在部署tomcat时也是不需要这个javax.servlet-api的