Unload to load class hello.Namehandler(200分)

绝对菜鸟，实在没法进行下去了，望指教

A Servlet Exception Has Occurred
Exception Report:
org.apache.jasper.JasperException: Unable to load class hello.NameHandler
at org.apache.jasper.compiler.BeanRepository.getBeanType(BeanRepository.java:183)
at org.apache.jasper.compiler.GetPropertyGenerator.generate(GetPropertyGenerator.java:102)
at org.apache.jasper.compiler.JspParseEventListener$GeneratorWrapper.generate(JspParseEventListener.java:820)
at org.apache.jasper.compiler.JspParseEventListener.generateAll(JspParseEventListener.java:242)
at org.apache.jasper.compiler.JspParseEventListener.endPageProcessing(JspParseEventListener.java:197)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:225)
at org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:478)
at org.apache.jasper.servlet.JasperLoader12.loadJSP(JasperLoader12.java:146)
at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:449)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:159)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:171)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:328)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:407)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:251)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:977)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:196)
at org.apache.catalina.valves.ValveBase.invokeNext(ValveBase.java:242)
at org.apache.catalina.authen
ticator.Authen
ticatorBase.invoke(Authen
ticatorBase.java:464)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:975)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2041)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.valves.ValveBase.invokeNext(ValveBase.java:242)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:414)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:975)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:159)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:977)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:818)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:897)
at java.lang.Thread.run(Thread.java:484)
Root Cause:
java.lang.ClassNotFoundException: Unable to load class hello.NameHandler
at org.apache.jasper.servlet.JasperLoader.findClass(JasperLoader.java:223)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:147)
at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
at org.apache.jasper.compiler.BeanRepository.getBeanType(BeanRepository.java:181)
at org.apache.jasper.compiler.GetPropertyGenerator.generate(GetPropertyGenerator.java:102)
at org.apache.jasper.compiler.JspParseEventListener$GeneratorWrapper.generate(JspParseEventListener.java:820)
at org.apache.jasper.compiler.JspParseEventListener.generateAll(JspParseEventListener.java:242)
at org.apache.jasper.compiler.JspParseEventListener.endPageProcessing(JspParseEventListener.java:197)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:225)
at org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:478)
at org.apache.jasper.servlet.JasperLoader12.loadJSP(JasperLoader12.java:146)
at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:449)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:159)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:171)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:328)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:407)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:251)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:977)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:196)
at org.apache.catalina.valves.ValveBase.invokeNext(ValveBase.java:242)
at org.apache.catalina.authen
ticator.Authen
ticatorBase.invoke(Authen
ticatorBase.java:464)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:975)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2041)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.valves.ValveBase.invokeNext(ValveBase.java:242)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:414)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:975)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:159)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:977)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:818)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:897)
at java.lang.Thread.run(Thread.java:484)

应该是配置问题吧，Servlet找不到，你用什么服务器？
使用环境写清楚点

可以了，感谢大虾关怀