使用javaBean时遇到的问题？已经折腾了好几天了，请帮忙解决！（在线）

[xiaofengking]

使用Bean时，显示如下的错误信息！
HTTP Status 500 -

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type Exception report

message

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

exception

org.apache.jasper.JasperException: /useBeans.jsp(1,1) Page directive has invalid attribute: contenttype
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:83)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:402)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:236)
org.apache.jasper.compiler.JspUtil.checkAttributes(JspUtil.java:348)
org.apache.jasper.compiler.Validator$DirectiveVisitor.visit(Validator.java:144)
org.apache.jasper.compiler.Node$PageDirective.accept(Node.java:578)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2180)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2230)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2236)
org.apache.jasper.compiler.Node$Root.accept(Node.java:485)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2180)
org.apache.jasper.compiler.Validator.validate(Validator.java:1481)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:247)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:456)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:553)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:291)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)


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


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[feiyuwen]

jsp compile error

[剑事]

没打包么

[Philzzf]

贴出源程序

[顽皮小熊]

你的JAVA服务器把JSP编译成servlet时出现的错误。

[purejd]

不是javabean的问题,是你的jsp页面的问题.把<%@page...%>中的contentType写成了contenttype,没有区分大小写:)

[火柴头9527]

我认为：
exception

org.apache.jasper.JasperException: /useBeans.jsp(1,1) Page directive has invalid attribute: contenttype
。。。
把“contenttype”改为“contentType” 就像jsp:usebean错，而 jsp:useBean正确一样，注意大小写问题！

[yangchenzhuo]

把源码粘出来吧，错误信息不准确的，用开发工具做断点跟踪，错误就会出来了