点击页面的添加超链接实现添加一个员工添加成功 后跳转到显示所有员工的页面要把新添加的这个员工显示出来用java实现
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首先,在添加员工的页面上,需要一个提交按钮,点击提交按钮时,将表单数据发送到服务器端进行处理。
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在服务器端,可以使用Java的Servlet技术来处理表单数据,并将员工信息保存到数据库中。
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添加成功后,可以使用Java的重定向功能将页面跳转到显示所有员工的页面。
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在显示所有员工的页面上,可以使用Java的JDBC技术从数据库中读取所有员工信息,并将其展示在页面上。
 
示例代码如下:
添加员工的页面:
<form action="addEmployee" method="post">
  姓名:<input type="text" name="name"><br/>
  年龄:<input type="text" name="age"><br/>
  性别:<input type="radio" name="gender" value="男">男
        <input type="radio" name="gender" value="女">女<br/>
  部门:<input type="text" name="department"><br/>
  <input type="submit" value="提交">
</form>
处理员工信息的Servlet:
@WebServlet("/addEmployee")
public class AddEmployeeServlet extends HttpServlet {
  private EmployeeDao employeeDao;
  public void init() {
    employeeDao = new EmployeeDao();
  }
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    String name = request.getParameter("name");
    int age = Integer.parseInt(request.getParameter("age"));
    String gender = request.getParameter("gender");
    String department = request.getParameter("department");
    Employee employee = new Employee(name, age, gender, department);
    employeeDao.addEmployee(employee);
    response.sendRedirect("showEmployees");
  }
}
显示员工信息的Servlet:
@WebServlet("/showEmployees")
public class ShowEmployeesServlet extends HttpServlet {
  private EmployeeDao employeeDao;
  public void init() {
    employeeDao = new EmployeeDao();
  }
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    List<Employee> employees = employeeDao.getAllEmployees();
    request.setAttribute("employees", employees);
    request.getRequestDispatcher("showEmployees.jsp").forward(request, response);
  }
}
显示员工信息的JSP页面:
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>显示所有员工</title>
</head>
<body>
  <table border="1">
    <tr>
      <th>姓名</th>
      <th>年龄</th>
      <th>性别</th>
      <th>部门</th>
    </tr>
    <%@ page import="java.util.List" %>
    <%@ page import="com.example.Employee" %>
    <% List<Employee> employees = (List<Employee>) request.getAttribute("employees"); %>
    <% for (Employee employee : employees) { %>
      <tr>
        <td><%= employee.getName() %></td>
        <td><%= employee.getAge() %></td>
        <td><%= employee.getGender() %></td>
        <td><%= employee.getDepartment() %></td>
      </tr>
    <% } %>
  </table>
</body>
</html>
``
原文地址: https://www.cveoy.top/t/topic/hwQ4 著作权归作者所有。请勿转载和采集!