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急！求解！《JSP信息系统开发实例精选》物流短信平台调试出错。
发表在JavaWeb图书答疑
2011-05-09
是否精华
是
否
版块置顶:
是
否
将源文件放入tomcat的webapps下，并将数据库文件附加到了SQL Server 2000中。但最后调试出错。
出错显示：
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
com.cargo.db.Waredb.select(Waredb.java:41)
com.cargo.db.Waredb.select(Waredb.java:34)
com.cargo.crotrol.WareAction.View(WareAction.java:125)
com.cargo.crotrol.WareAction.perform(WareAction.java:41)
org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1787)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1586)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
com.cargo.filter.SetCharacterEncoding.doFilter(SetCharacterEncoding.java:37)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
出错显示：
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
com.cargo.db.Waredb.select(Waredb.java:41)
com.cargo.db.Waredb.select(Waredb.java:34)
com.cargo.crotrol.WareAction.View(WareAction.java:125)
com.cargo.crotrol.WareAction.perform(WareAction.java:41)
org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1787)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1586)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
com.cargo.filter.SetCharacterEncoding.doFilter(SetCharacterEncoding.java:37)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
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