Question

JSP：Unable to load class for JSP

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Unable to load class for JSP
org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:599)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:137)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:314)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

root cause

java.lang.ClassNotFoundException: org.apache.jsp.showBookList_jsp
java.net.URLClassLoader$1.run(URLClassLoader.java:200)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(URLClassLoader.java:188)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:131)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63)
org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:597)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:137)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:314)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.27 logs.

急迫，请高手指点呀！555.分不多，请好心人行行好吧。。。

Answer 1

java.lang.ClassNotFoundException属于类名无法找到的异常

是不是你哪个类中没有捕获异常或者是你哪个文件后缀名被改了不能被识别，或者是你要调用的类名字被改掉了或者被删掉了~
总之你要调用的这个类在这里无法被找到，所以报这个错~

Answer 2

java.lang.ClassNotFoundException: org.apache.jsp.showBookList_jsp
-- this file is missing? what's that?

Answer 3

按理说应该自动编译新的jsp文件,
试试删除tomcat/work目录重起一下tomcat

Answer 4

可能性太多了.首先有可能是你的代码哪写的有点小问题.