如何查看eclipse中servlet跟jsp的版本

打开tomcat的lib 目录下，有两个JAR文件： jsp-api.jar servlet-api.jar 。如果没有，那可能是你没有添加进来。解压这两个文件，用记事本分别打开META-INF下的MAINMEFT.MF文件。

JSP的版本信息：

Manifest-Version: 1.0

Ant-Version: Apache Ant 1.8.0

Created-By: 1.6.0_27-b07 (Sun Microsystems Inc.)

X-Compile-Source-JDK: 1.6

X-Compile-Target-JDK: 1.6

Name: javax/servlet/jsp/

Specification-Title: Java API for JavaServer Pages

Specification-Version: 2.2

Specification-Vendor: Sun Microsystems, Inc.

Implementation-Title: javax.servlet.jsp

Implementation-Version: 2.2.FR

Implementation-Vendor: Apache Software Foundation

Servlet版本：

Manifest-Version: 1.0

Ant-Version: Apache Ant 1.8.0

Created-By: 1.6.0_27-b07 (Sun Microsystems Inc.)

X-Compile-Source-JDK: 1.6

X-Compile-Target-JDK: 1.6

Name: javax/servlet/

Specification-Title: Java API for Servlets

Specification-Version: 3.0

Specification-Vendor: Sun Microsystems, Inc.

Implementation-Title: javax.servlet

Implementation-Version: 3.0.FR

Implementation-Vendor: Apache Software Foundation