[求助]这是什么错误 - 编程论坛

#2

limaoyuan2006-11-01 16:59

[IMG]http://bbs.bc-cn.net/P_S_L_77/2006-11/200611116592284592.jpg[/IMG]

#3

limaoyuan2006-11-01 17:00

看不清楚这是图片的联接
 https://bbs.bc-cn.net/P_S_L_77/2006-11/200611116592284592.jpg

#4

limaoyuan2006-11-01 18:02

再看不清楚,图片另存为,然后电脑上看一下...谢谢了

type Exception report

message

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

exception

org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

java.lang.NullPointerException
db.DB.insert(DB.java:27)
org.apache.jsp.aaa_jsp._jspService(aaa_jsp.java:50)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

#5

千里冰封2006-11-01 19:05

空指针异常,是最常见也是最容易排除的错误

#6

limaoyuan2006-11-01 20:12

同时也是最难解决的....因为在调用这个方法之前我用System.out.println完全可以打出传给他的参数有值...

你能帮我看下后面的异常提示能更具体到哪方面吗?

有没有数据库的事儿?因为这个异常就是在数据库DriverManager这里错的..

#7

千里冰封2006-11-01 20:20

对象没有初始化