这是我为使您的应用程序运行所要做的。

FolderStructure（文件夹结构的图像）
ApplicationExample（应用程序运行示例）

创建2个新的Java包

（1）Servlet（2）列表

向列表添加2个类（1）Visit.java（2）VisitListVariables.java向Servlet添加1个类（1）Servlet.java

内部Visit.java

package lists;

import java.util.ArrayList;
import java.util.List;


 public class Visit{
      public static List<VisitListVariables> BuildVisitList(){

        List<VisitListVariables> BuildVisitList = new ArrayList<>(); //creates List to return
        try{
          //Database connection variables
          //Connection conn = DriverManager.getConnection("jdbc:postgresql://localhost:5432/postgres", "postgres", "password");
          //Statement stm;
          //stm = conn.createStatement();
          //String sql = "Select * From Customer";
          //ResultSet rs;
          //rs = stm.executeQuery(sql);


            //while(rs.next()){
              VisitListVariables buildList = new VisitListVariables(); //Gets variables needed for list
              //String visitDate = rs.getString("visitDate"); 
              String dateOfTheVisit = "today";
              buildList.setDateOfTheVisit(dateOfTheVisit);
              buildList.setCategory("Doctor Visit");
              buildList.setIdClient("666");
              buildList.setIdInsrurer("999");
              buildList.setIdDoctor("1001");
              buildList.setIdVisit("001");
              buildList.setAccepted("yes");

              BuildVisitList.add(buildList);
            //}
            //rs.close();stm.close();conn.close();

        }catch(Exception e){}




        return BuildVisitList;

      }
    }

内部VisitListVariables.java

package lists;

public class VisitListVariables {
    private String dateOfTheVisit;
    private String category;
    private String idClient;
    private String idInsrurer;
    private String idDoctor;
    private String idVisit;
    private String accepted;

  public String getDateOfTheVisit() {
    return dateOfTheVisit;
  }

  public void setDateOfTheVisit(String dateOfTheVisit) {
    this.dateOfTheVisit = dateOfTheVisit;
  }

  public String getCategory() {
    return category;
  }

  public void setCategory(String category) {
    this.category = category;
  }

  public String getIdClient() {
    return idClient;
  }

  public void setIdClient(String idClient) {
    this.idClient = idClient;
  }

  public String getIdInsrurer() {
    return idInsrurer;
  }

  public void setIdInsrurer(String idInsrurer) {
    this.idInsrurer = idInsrurer;
  }

  public String getIdDoctor() {
    return idDoctor;
  }

  public void setIdDoctor(String idDoctor) {
    this.idDoctor = idDoctor;
  }

  public String getIdVisit() {
    return idVisit;
  }

  public void setIdVisit(String idVisit) {
    this.idVisit = idVisit;
  }

  public String getAccepted() {
    return accepted;
  }

  public void setAccepted(String accepted) {
    this.accepted = accepted;
  }


}

在Servlet.java内部

package 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 lists.Visit;
import lists.VisitListVariables;


public class Servlet extends HttpServlet {

  /**
   * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
   * methods.
   *
   * @param request servlet request
   * @param response servlet response
   * @throws ServletException if a servlet-specific error occurs
   * @throws IOException if an I/O error occurs
   */
  protected void processRequest(HttpServletRequest request, HttpServletResponse response)
          throws ServletException, IOException {

      List<VisitListVariables> visit = Visit.BuildVisitList();
      request.setAttribute("visitParam", visit); // Will be available as ${visitParam} in JSP
      request.getRequestDispatcher("/test.jsp").forward(request, response);

  }

  // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
  /**
   * Handles the HTTP <code>GET</code> method.
   *
   * @param request servlet request
   * @param response servlet response
   * @throws ServletException if a servlet-specific error occurs
   * @throws IOException if an I/O error occurs
   */
  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
          throws ServletException, IOException {
    processRequest(request, response);
  }

  /**
   * Handles the HTTP <code>POST</code> method.
   *
   * @param request servlet request
   * @param response servlet response
   * @throws ServletException if a servlet-specific error occurs
   * @throws IOException if an I/O error occurs
   */
  @Override
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
          throws ServletException, IOException {
    processRequest(request, response);
  }

  /**
   * Returns a short description of the servlet.
   *
   * @return a String containing servlet description
   */
  @Override
  public String getServletInfo() {
    return "Short description";
  }// </editor-fold>

}

在jsp中，我命名为test.jsp

<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
    <TITLE>The tableName Database Table </TITLE>
</head>

<body>


    <H1>The tableName Database Table </H1>

    <table BORDER="1">
        <tr>
            <th>Date</th>
            <th>Category</th>
            <th>IdClient</th>
            <th>IdInsurer</th>
            <th>IdDoctor</th>
            <th>Accepted</th>
            <th>ID</th>
        </tr>
        <tbody>
            <c:forEach items="${visitParam}" var="visit">
                <tr>
                    <td><c:out value="${visit.dateOfTheVisit}"/></td>
                    <td><c:out value="${visit.category}"/></td>  
                    <td><c:out value="${visit.idClient}"/></td>
                    <td><c:out value="${visit.idInsrurer}"/></td> 
                    <td><c:out value="${visit.idDoctor}"/></td>
                    <td><c:out value="${visit.idVisit}"/></td> 
                    <td><c:out value="${visit.accepted}"/></td> 
                </tr>
            </c:forEach>
        </tbody>
    </table>


</body>
</html>

Web.xml（通常，您将拥有一个带有链接的索引页，该链接 <a href='/Servlet'>Visits</a>将指向您的servlet，但是为了进行测试，您可以将servlet输入url //
localhost：8080 / ProjectName / Servlet）

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">
    <servlet>
        <servlet-name>Servlet</servlet-name>
        <servlet-class>Servlet.Servlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>Servlet</servlet-name>
        <url-pattern>/Servlet</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>Servlet</welcome-file>
    </welcome-file-list>
</web-app>