Failed to execute goal org.apache.tomcat.maven:tomcat7-maven-plugin:2.2:run (default-cli) on project springmvc_03_postandget: Could not start Tomcat

# Failed to execute goal org.apache.tomcat.maven:tomcat7-maven-plugin:2.2:run (default-cli) on project springmvc_03_postandget: Could not start Tomcat
tomcat启动失败，看看servlet的依赖有没有设置为provided，tomcat内置了servlet，运行时会报错，所以使用provided让其运行时不生效。