数据库建表查询不到数据?

package com.itheima.product.servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.itheima.product.domain.Product;
import com.itheima.product.sercice.ProductService;

/**
* 查询所有商品的Servlet
*/
public class ProductFindAllServlet extends HttpServlet {
   private static final long serialVersionUID = 1L;

   protected void doGet(HttpServletRequest request, HttpServletResponse response)
           throws ServletException, IOException {
       /**
       * 调用业务层: 页面跳转:
       */
       try {
           // 调用业务层:
           ProductService productService = new ProductService();
           List<Product> list = productService.findAll();
           // 页面跳转:
           request.setAttribute("list", list);
           request.getRequestDispatcher("/jsp/product_list.jsp").forward(request, response);
       } catch (Exception e) {
           e.printStackTrace();
           throw new RuntimeException();
       }
   }

   protected void doPost(HttpServletRequest request, HttpServletResponse response)
           throws ServletException, IOException {
       doGet(request, response);
   }

}

<%@ page language="java" contentType="text/html; charset=UTF-8"
   pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
   <h1>商品的列表页面</h1>
   <table border="1" width="800">
       <tr>
           <td>序号</td>
           <td>商品名称</td>
           <td>市场价格</td>
           <td>商城价格</td>
           <td>是否热门</td>
           <td>是否下架</td>
           <td>操作</td>
       </tr>
       <c:forEach var="p" items="${ list }">
           <tr>
               <td>序号</td>
               <td>${p.name }</td>
               <td>${p.market_price }</td>
               <td>${p.shop_price }</td>
               <td><c:if test="${p.is_hot == 1 }">
                       是
                   </c:if> <c:if test="${p.is_hot == 0 }">
                       否
                   </c:if></td>
               <td><c:if test="${p.is_hot == 1 }">
                       已下架
                   </c:if> <c:if test="${p.is_hot == 0 }">
                       未下架
                   </c:if></td>
               <td><a href="">修改</a>|<a href="">删除</a></td>
           </tr>
       </c:forEach>
   </table>
</body>
</html>

大家看看哪些错了吗一直连接不上数据库的内容急死人了哎!!

十月 04, 2017 12:35:35 下午
java.lang.ClassNotFoundException: com.itheima.product.servlet.ProductFindAllServlet
   at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1718)
   at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569)
   at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:529)
   at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:511)
   at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:139)
   at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1143)
   at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:864)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:134)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
   at java.lang.Thread.run(Thread.java:744)

慕姐8946757

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数据库建表查询不到数据?

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