问题：javax.servlet.ServletException: Wrapper cannot find servlet class vko.userhome.UserHomeServlet or a class it depends on org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877) org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594) org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675) java.lang.Thread.run(Thread.java:662)
root cause
java.lang.ClassNotFoundException: vko.userhome.UserHomeServlet org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877) org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594) org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675) java.lang.Thread.run(Thread.java:662)
解决：servlet的路径不匹配!修改过来ok！
“Error loading WebappClassLoader”，一直报这个错误，从网上也找了好多资料，看到一个高手说的这个方法：查看你的Servlet是否放置到正确的目录，配置是否正确!Web-INF etc！试了下，ok！
这里随手做个笔记！哈哈
本人文档纯属个人总结使用，如有不对的地方，还望亲爱的小伙伴们勿喷!