1、进入tomcat的lib目录
2、找到 jsp-api.jar 和 servlet-api.jar两个jar包
3、复制出来，解压
4、进入META-INF目录，找到 MANIFEST.MF文件，记事本打开
servlet版本为4.0
Manifest-Version: 1.0 Ant-Version: Apache Ant 1.9.14 Bnd-LastModified: 1575736991076 Bundle-ManifestVersion: 2 Bundle-Name: tomcat-servlet-api Bundle-SymbolicName: org.apache.tomcat-servlet-api Bundle-Version: 9.0.30 Created-By: 1.8.0_232 (AdoptOpenJDK) DSTAMP: 20191207 Export-Package: javax.servlet;uses:="javax.servlet.annotation,javax.se rvlet.descriptor",javax.servlet.annotation;uses:="javax.servlet",java x.servlet.descriptor,javax.servlet.http;uses:="javax.servlet",javax.s ervlet.resources Import-Package: javax.servlet,javax.servlet.annotation,javax.servlet.d escriptor,org.apache.catalina.connector Originally-Created-By: 1.8.0_232-b09 () Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=1.8))" TODAY: December 7 2019 Tool: Bnd-4.2.0.201903051501 TSTAMP: 1642 X-Compile-Source-JDK: 8 X-Compile-Target-JDK: 8 Name: javax/servlet/ Implementation-Title: javax.servlet Implementation-Vendor: Apache Software Foundation Implementation-Version: 4.0.FR Specification-Title: Java API for Servlets Specification-Vendor: Sun Microsystems, Inc. Specification-Version: 4.0
jsp版本为2.3
Name: javax/servlet/jsp/ Implementation-Title: javax.servlet.jsp Implementation-Vendor: Apache Software Foundation Implementation-Version: 2.3.FR Specification-Title: Java API for JavaServer Pages Specification-Vendor: Sun Microsystems, Inc. Specification-Version: 2.3