<%  List<Adress> adress2=(List<Adress>)request.getAttribute("adress3"); 
    if(adress2!=null){%>
    <% for(Adress  adress:adress2) %> 
            <tr> 
            <td><%=request.getParameter("name") %></td>
            <td><%=request.getParameter("phone")%></td>
            <td><%=request.getParameter("sex") %></td>
            <td><%=request.getParameter("mail") %></td>
            <td><%=request.getParameter("lei") %></td>
          </tr>
                <%} %>
这是JSP  页面的代码
       
                String  name=request.getParameter("name");
                String phone=request.getParameter("phone");
                String  sex=request.getParameter("sex");
                String  mail=request.getParameter("mail");
                String  lei=request.getParameter("lei");
                System.out.println(name+"name");
                
                Adress  adress=new  Adress();
                AdressDao  dao=new  AdressDaoImpl();
List<Adress>  adress2=(List<Adress>) dao.searchAllAdress(adress);
                request.setAttribute("adress3",adress2);
                request.getRequestDispatcher("comm6.jsp").forward(request, response);
这是Servlet部分的向数据库提取值的代码
严重: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.comm6_jsp._jspService(comm6_jsp.java:105)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675)
at java.lang.Thread.run(Thread.java:619)
这是报的错误  
实在是看不懂了  新手刚刚学着东西   急求帮忙