Question

我是JSP和servlets的新手。我试图使用eclipse juno和tomcat 7运行servlet。但是我收到以下错误：

HTTP Status 404 - /JSPPagination/EmployeeServlet
type Status report

message /JSPPagination/EmployeeServlet

description The requested resource (/JSPPagination/EmployeeServlet) is not available.

这是我的servlet

package com.theopentutorials.servlets;
import javax.servlet.annotation.WebServlet;
import java.io.IOException;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.theopentutorials.dao.EmployeeDAO;
import com.theopentutorials.to.Employee;

/**
 * Servlet implementation class EmployeeServlet
 */
@WebServlet("/EmployeeServlet")
public class EmployeeServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    public EmployeeServlet() {
            super();
    }

    public void doGet(HttpServletRequest request, 
            HttpServletResponse response) 
            throws ServletException, IOException {
        int page = 1;
        int recordsPerPage = 5;
        if(request.getParameter("page") != null)
            page = Integer.parseInt(request.getParameter("page"));
        EmployeeDAO dao = new EmployeeDAO();
        List<Employee> list = dao.viewAllEmployees((page-1)*recordsPerPage,
                                 recordsPerPage);
        int noOfRecords = dao.getNoOfRecords();
        int noOfPages = (int) Math.ceil(noOfRecords * 1.0 / recordsPerPage);
        request.setAttribute("employeeList", list);
        request.setAttribute("noOfPages", noOfPages);
        request.setAttribute("currentPage", page);
        RequestDispatcher view = request.getRequestDispatcher("displayEmployee.jsp");
        view.forward(request, response);
    }
}

我已经省略了web.xml，因为我正在使用tomcat 7。有人能给我一个我需要在构建路径中添加的jar文件列表吗？

这是我的JSP代码

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ 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=ISO-8859-1">
<title>Employees</title>
</head>
<body>
    <table border="1" cellpadding="5" cellspacing="5">
        <tr>
            <th>Emp ID</th>
            <th>Emp Name</th>
            <th>Salary</th>
            <th>Dept Name</th>
        </tr>

        <c:forEach var="employee" items="${employeeList}">
            <tr>
                <td>${employee.employeeId}</td>
                <td>${employee.employeeName}</td>
                <td>${employee.salary}</td>
                <td>${employee.deptName}</td>
            </tr>
        </c:forEach>
    </table>

    <%--For displaying Previous link except for the 1st page --%>
    <c:if test="${currentPage != 1}">
        <td><a href="employee.do?page=${currentPage - 1}">Previous</a></td>
    </c:if>

    <%--For displaying Page numbers. 
    The when condition does not display a link for the current page--%>
    <table border="1" cellpadding="5" cellspacing="5">
        <tr>
            <c:forEach begin="1" end="${noOfPages}" var="i">
                <c:choose>
                    <c:when test="${currentPage eq i}">
                        <td>${i}</td>
                    </c:when>
                    <c:otherwise>
                        <td><a href="employee.do?page=${i}">${i}</a></td>
                    </c:otherwise>
                </c:choose>
            </c:forEach>
        </tr>
    </table>

    <%--For displaying Next link --%>
    <c:if test="${currentPage lt noOfPages}">
        <td><a href="employee.do?page=${currentPage + 1}">Next</a></td>
    </c:if>

</body>
</html>

无法在tomcat 7和eclipse juno中运行servlet

0 个答案: