它在汲取了Tomcat 6.0.x优点的基础上，实现了对于Servlet 3.0、JSP 2.2和EL 2.2等特性的支持。(On the basis of the advantages of Tomcat 6.0.x, it implements support for features such as Servlet 3, JSP 2.2, and EL 2.2.)