所有访问的jsp页面都报不能编译jsp，这个有遇到的么，怎么修复？

[xiatiansong]

org.apache.jasper.JasperException: Unable to compile class for JSP
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:572)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
root cause

java.lang.NullPointerException
org.apache.jasper.compiler.Validator$ValidateVisitor.(Validator.java:516)
org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1819)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:219)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:375)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:355)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:342)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:557)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

[HonestManXin]

不好意思！以前的jsp页面是由公司的web组开发的，我们只是负责提供接口，所以对这块我不是很熟！
On 2013年12月18日, at 下午12:10, 夏天松 notifications@github.com wrote:

org.apache.jasper.JasperException: Unable to compile class for JSP
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:572)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
root cause

java.lang.NullPointerException
org.apache.jasper.compiler.Validator$ValidateVisitor.(Validator.java:516)
org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1819)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:219)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:375)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:355)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:342)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:557)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

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[paopaofish]

你检查下webapp文件夹下面是不是少一些工程，tomcat自己的一些

[yanzhifa]

这个问题还有解决办法吗？

[zhaofei1193]

按文档，在Eclipse中右击start-tomcat.launch这个文件，点Debug As可以调试Tomcat，浏览器输入127.0.0.1:8080页面报错：Unable to compile class for JSP。