毕业设计的程序,本人机器是64位的,下载了64位JDK,环境搭建成功了。运行了毕业设计的程序,可以成功运行。
第二天,再次打开电脑,再次运行就不行了。可以打开网页首页,进入登录页面就出现问题了。错误提示如下:
HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: java.lang.NullPointerException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:541)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:435)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause java.lang.NullPointerException
org.apache.jsp.index_jsp._jspService(index_jsp.java:97)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.13 logs.
--------------------------------------------------------------------------------Apache Tomcat/6.0.13
在网上看了很多类似的解决方案,都没有能够解决问题,希望有高手可以帮忙指导一下。jsp 数据库 无法运行重启后无法运行
第二天,再次打开电脑,再次运行就不行了。可以打开网页首页,进入登录页面就出现问题了。错误提示如下:
HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: java.lang.NullPointerException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:541)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:435)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause java.lang.NullPointerException
org.apache.jsp.index_jsp._jspService(index_jsp.java:97)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.13 logs.
--------------------------------------------------------------------------------Apache Tomcat/6.0.13
在网上看了很多类似的解决方案,都没有能够解决问题,希望有高手可以帮忙指导一下。jsp 数据库 无法运行重启后无法运行
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34: <%
35: ResultSet rs=con.getRs("SELECT a.jobid,b.name,b.school,b.specialty,b.knowledge,a.job,a.emolument FROM tb_sjob AS a,tb_student AS b WHERE a.sname=b.sname and getdate()<=atime ORDER BY ptime DESC");
36: while(rs.next()){
37: %>
38: <tr>
39: <td valign="top"><font id="reg"><<</font><a target="_blank" href="view.jsp?sid=<%=rs.getString(1)%>">[<%=rs.getString(2)%>]毕业于[<%=rs.getString(3)%>,<%=rs.getString(4)%>,<%=rs.getString(5)%>],欲求[<%=rs.getString(6)%>]职位,要求薪水[<%=rs.getString(7)%>]。</a> </td>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:524)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:435)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause java.lang.NullPointerException
org.apache.jsp.index_jsp._jspService(index_jsp.java:97)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.13 logs.
--------------------------------------------------------------------------------Apache Tomcat/6.0.13
SELECT a.jobid,b.name,b.school,b.specialty,b.knowledge,a.job,a.emolument FROM tb_sjob AS a,tb_student AS b WHERE a.sname=b.sname and getdate()<=atime ORDER BY ptime DESC
手动查询,看有结果没有,还有getdate()是什么意思?