HTTP Status 500错误 新手问题（jsp+tomcat+sql）
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:   Exception   in   JSP:   /left.jsp:117

114:                             <td   width= "47 "   height= "36 "> &nbsp;名称: </td>
115:                             <td   width= "91 "> <%=warename%> </td>
116:                     </tr>
117:             <tr>  
118:                             <td   height= "29 ">   &nbsp;价格: </td>
119:                             <td   height= "29 "> <%=wareprice%> 元 </td>
120:                       </tr>  

Stacktrace:
  org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:506)
  org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:395)
  org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
  org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


root   cause  

java.lang.NullPointerException
  org.apache.jsp.index_jsp._jspService(index_jsp.java:275)
  org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
  org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
  org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
  org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
  javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


note   The   full   stack   trace   of   the   root   cause   is   available   in   the   Apache   Tomcat/5.5.20   logs.


--------------------------------------------

Apache   Tomcat/5.5.20

------解决方案--------------------
NullPointerException
------解决方案--------------------
空指针错误
也就是你的指针指到了一片空内存
------解决方案--------------------
那就把代码帖详细点 好帮你找找
------解决方案--------------------
P: /left.jsp:117 告诉你这个地方有错误
一般是属于空值异常 ，即
NullPointerException ，很常见的错误。