[u]谢谢各位大侠了,开发包我也下到了!!!不过出现了新问题,如下:
1、我也安装了开发【jsp项目开发全程实录】第三章想要的包,但还是不能运行,仍然报[strong]HTTP Status 500 -
[/strong]错[/u],情况如下(小弟我是初学者,望各位高手指点迷津):
[strong]type[/strong] Exception report
[strong]message[/strong]
[strong]description[/strong] [u]The server encountered an internal error () that prevented it from fulfilling this request.
[/u][strong]exception [/strong]
org.apache.jasper.JasperException: java.lang.NullPointerException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
[strong]root cause[/strong]
java.lang.NullPointerException
com.wy.dao.GoodsDao.selectMark(GoodsDao.java:52)
org.apache.jsp.index_jsp._jspService(index_jsp.java:70)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.