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java web 典型模块大全的22章论坛的问题
发表在JavaWeb图书答疑
2009-07-27
是否精华
是
否
版块置顶:
是
否
按照要求设置后，出现登录界面，一点登录就出错了：
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
com.toolsbean.DB.getRs(DB.java:70)
com.dao.CategoryDao.getCategoryMap(CategoryDao.java:133)
com.servlet.IndexServlet.doPost(IndexServlet.java:27)
com.servlet.IndexServlet.doGet(IndexServlet.java:20)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
com.filter.CookieFilter.doFilter(CookieFilter.java:43)
com.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:24)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.20 logs.
请指点是什么错了
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
com.toolsbean.DB.getRs(DB.java:70)
com.dao.CategoryDao.getCategoryMap(CategoryDao.java:133)
com.servlet.IndexServlet.doPost(IndexServlet.java:27)
com.servlet.IndexServlet.doGet(IndexServlet.java:20)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
com.filter.CookieFilter.doFilter(CookieFilter.java:43)
com.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:24)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.20 logs.
请指点是什么错了
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