修改数据库表出错！
数据库用的是SQL Server 2005;

我用表名tb_user

ResultSet rsall=db.getRs("select * from tb_user");

可以查询；

修改表名tb_useree

ResultSet rsall=db.getRs("select * from tb_useree");

出错 HTTP Status 500 -

type Exception report

message

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

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /show.jsp at line 22

Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)


root cause

java.lang.NullPointerException
org.apache.jsp.show_jsp._jspService(show_jsp.java:91)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)


note The full stack trace of the root cause is available in the Apache Tomcat/7.0.23 logs.




[解决办法]
rsall为null，所以报NULLException异常，
先在后台查询要查询的语句，
执行成功，在放到查询语句中。
[解决办法]
我想了解下、你是否是在服务器开着的情况下
修改了数据库的表名 然后在jsp页面上改了一些属性比如查询了useree这个表、

如果重新编译呢试试呢、

在数据库中执行下 select * from useree 看是否有数据。
[解决办法]
/show.jsp at line 22 是啥？
我的异常网推荐解决方案：An exception occurred processing JSP page,http://www.myexception.cn/j2se/33144.html
我的异常网推荐解决方案：The server encountered an internal error () that prevented it from fulfilling this request.,http://www.myexception.cn/java-web/317.html