四:javaee会议管理系统实现过程之注册审批功能的代码(完整详细有注释)
作者：互联网
1.只有管理员有注册审批这个权限,因此第一步是要显示待审核状态的员工
1.EmployeeDAO类
/**
* 方法四:查询所有员工信息，返回到集合中
* @return
*/
public List<Employee> selectAllEmployee(){
conn=ConnectionFactory.getConnection();
List<Employee> employeeslist=new ArrayList<Employee>();
Employee employee=null;
try {
PreparedStatement st=null;
//只查询已注册且未审批 且 角色是员工的
String sql="select * from employee where role='2' and status='0'";
st = conn.prepareStatement(sql);
ResultSet rs =st.executeQuery(sql);
while(rs.next()){
employee=new Employee();
employee.setEmployeeid(rs.getInt("employeeid"));
employee.setEmployeename(rs.getString("employeename"));
employee.setUsername(rs.getString("username"));
employee.setPhone(rs.getString("phone"));
employee.setEmail(rs.getString("email"));
employee.setStatus(rs.getString("status"));
employee.setDepartmentid(rs.getInt("departmentid"));
employee.setPassword(rs.getString("password"));
employee.setRole(rs.getString("role"));
employeeslist.add(employee);
}
} catch (SQLException e) {
e.printStackTrace();
}finally{
//最后总要关闭连接
ConnectionFactory.closeConnection();
}
return employeeslist;
}
2.修改
新增一个
ViewAllEmployeesServlet类
package com.meeting.servlet;
import java.io.IOException;
import java.io.PrintWriter;
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.meeting.dao.EmployeeDAO;
import com.meeting.vo.Employee;
public class ViewAllEmployeesServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request,response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String code=request.getParameter("code");
//新建一个DAO去调用刚才写的selectAllEmployee()方法
EmployeeDAO dao=new EmployeeDAO();
List<Employee> employeesList=dao.selectAllEmployee();
//把查询得到的集合存起来叫employeesList,并且请求转发到approveaccount.jsp
request.setAttribute("employeesList", employeesList);
if(code!=null&code.equals("approve")){
request.getRequestDispatcher("approveaccount.jsp").forward(request, response);
}
}
}
新增一个approveaccount.jsp
<%@ page language="java" import="java.util.*,com.meeting.vo.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<html>
<head>
<title>CoolMeeting会议管理系统</title>
<link rel="stylesheet" href="styles/common03.css"/>
</head>
<body>
<div class="page-content">
<div class="content-nav">
人员管理 > 注册审批
</div>
<table class="listtable">
<caption>所有待审批注册信息：</caption>
<!-- 取出刚刚存起来的待审批的员工列表 -->
<%List<Employee> employeesList=(List<Employee>)request.getAttribute("employeesList"); %>
<tr class="listheader">
<th>姓名</th>
<th>账号名</th>
<th>联系电话</th>
<th>电子邮件</th>
<th>操作</th>
</tr>
<!-- 循环迭代这个列表 -->
<%for(Employee e:employeesList){ %>
<tr>
<td><%=e.getEmployeename()%></td>
<td><%=e.getUsername()%></td>
<td><%=e.getPhone()%></td>
<td><%=e.getEmail()%></td>
<td>
<input type="button" class="clickbutton" value="通过"/>
<input type="button" class="clickbutton" value="不通过"/>
</td>
</tr>
<%}%>
</table>
</div>
<div class="page-footer">
<hr/>
更多问题，欢迎联系<a href="mailto:webmaster@eeg.com">管理员</a>
<img src="images/footer.png" alt="CoolMeeting"/>
</div>
</body>
</html>
web.xml
<servlet>
<servlet-name>ViewAllEmployeesServlet</servlet-name>
<servlet-class>com.meeting.servlet.ViewAllEmployeesServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ViewAllEmployeesServlet</servlet-name>
<url-pattern>/ViewAllEmployeesServlet</url-pattern>
</servlet-mapping>
测试:
登录一个管理员的账号
可以看到,待审批的员工会显示出来
2.实现审批的操作:实现通过/不通过这个按钮
1.修改数据逻辑EmployeeDAO
新增一个更新用户状态的方法updateStatus()
/**
* 方法五:
* 向表employee中插入记录，其中status和role使用默认值
* @param employeeid 传入的员工id
* @param status 传入的员工状态
*/
public void updateStatus(int employeeid,String status){
conn=ConnectionFactory.getConnection();
String sql="update employee set status='"+status+"'where employeeid="+employeeid;
try {
PreparedStatement pstmt = conn.prepareStatement(sql);
pstmt.executeUpdate();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
ConnectionFactory.closeConnection();
}
}
2.写一个新的审批的servlet
ApproveServlet.java
package com.meeting.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.meeting.dao.EmployeeDAO;
public class ApproveServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request,response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//得到需要审批的员工id
int employeeid=Integer.parseInt(request.getParameter("employeeid"));
//用oper来知道审批的操作是通过还是不通过
String oper =request.getParameter("oper");
EmployeeDAO dao=new EmployeeDAO();
if(oper!=null&&oper.equals("yes")){
//通过
dao.updateStatus(employeeid,"1");
}
if(oper!=null&&oper.equals("no")){
//不通过
dao.updateStatus(employeeid,"2");
}
//请求转发跳转到
request.getRequestDispatcher("ViewAllEmployeesServlet?code=approve").forward(request, response);
}
}
3.修改approveaccount.jsp
修改通过与不通过的按钮
测试一下:
按通过
再改回0
按不通过按钮
成功!
标签：employeeid,管理系统,request,rs,javaee,注释,employee,import,servlet 来源： https://blog.csdn.net/wudingan/article/details/99712907