netbeans运行java web程序总是出错
HTTPStatus500-typeExceptionreportmessagedescriptionTheserverencounteredaninternalerro...
HTTP Status 500 -
type Exception report
message
descriptionThe server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: java.lang.NullPointerException
root cause
java.lang.NullPointerException
note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 3.1.2.2 logs. 展开
type Exception report
message
descriptionThe server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: java.lang.NullPointerException
root cause
java.lang.NullPointerException
note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 3.1.2.2 logs. 展开
2个回答
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glassfish 可能出问题了，重装glassfish试下
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空指针异常 用debug 或者输出语句在你觉得可能出现空对象调用的地方输出来看看就知道了
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