问题在最末尾
<%@ page contentType="text/html;charset=utf-8"%>
<%@ taglib uri ="http://java.sun.com/jsp/jstl/core" prefix ="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix = "fmt" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>员工列表</title>
<link href="css/bootstrap.css" type="text/css" rel="stylesheet"></link>
<script type="text/javascript" src="js/jquery-1.11.1.min.js"></script>
<script type="text/javascript" src="js/bootstrap.js"></script>
<style type="text/css">
.pagination {
margin: 0px
}
.pagination > li > a, .pagination > li > span {
margin: 0 5px;
border: 1px solid #dddddd;
}
.glyphicon {
margin-right: 3px;
}
.form-control[readonly] {
cursor: pointer;
background-color: white;
}
#dlgPhoto .modal-body{
text-align: center;
}
.preview{
max-width: 500px;
}
</style>
<script>
$(function () {
$("#btnAdd").click(function () {
$('#dlgForm').modal()
});
})
</script>
</head>
<body>
<div class="container">
<div class="row">
<h1 style="text-align: center">IMOOC员工信息表</h1>
<div class="panel panel-default">
<div class="clearfix panel-heading ">
<div class="input-group" style="width: 500px;">
<button class="btn btn-primary" id="btnAdd"><span class="glyphicon glyphicon-zoom-in"></span>新增
</button>
</div>
</div>
<table class="table table-bordered table-hover">
<thead>
<tr>
<th>序号</th>
<th>员工编号</th>
<th>姓名</th>
<th>部门</th>
<th>职务</th>
<th>工资</th>
<th> </th>
</tr>
</thead>
<tbody>
<c:forEach items = "${applicationScope.employees}" var="emp" varStatus="idx">
<tr>
<td>${idx.index+1}</td>
<td>${emp.empno}</td>
<td>${emp.ename}</td>
<td>${emp.department}</td>
<td>${emp.job}</td>
<td style="color:red;font-weight: bold">￥
<fmt:formatNumber value="${emp.salary}" pattern="0,000.00"></fmt:formatNumber>
</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</div>
<!-- 表单 -->
<div class="modal fade" tabindex="-1" role="dialog" id="dlgForm">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span>
</button>
<h4 class="modal-title">新增员工</h4>
</div>
<div class="modal-body">
<form action="/employee/create" method="post" >
<div class="form-group">
<label for="empno">员工编号</label>
<input type="text" name="empno" class="form-control" id="empno" placeholder="请输入员工编号">
</div>
<div class="form-group">
<label for="ename">员工姓名</label>
<input type="text" name="ename" class="form-control" id="ename" placeholder="请输入员工姓名">
</div>
<div class="form-group">
<label>部门</label>
<select id="dname" name="department" class="form-control">
<option selected="selected">请选择部门</option>
<option value="市场部">市场部</option>
<option value="研发部">研发部</option>
<option value="后勤部">后勤部</option>
</select>
</div>
<div class="form-group">
<label>职务</label>
<input type="text" name="job" class="form-control" id="sal" placeholder="请输入职务">
</div>
<div class="form-group">
<label for="sal">工资</label>
<input type="text" name="salary" class="form-control" id="sal" placeholder="请输入工资">
</div>
<div class="form-group" style="text-align: center;">
<button type="submit" class="btn btn-primary">保存</button>
</div>
</form>
</div>
</div><!-- /.modal-content -->
</div><!-- /.modal-dialog -->
</div><!-- /.modal -->
</body>
</html>package com.imooc.employee;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/create")
public class CreateServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public CreateServlet() {
super();
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
String empno = request.getParameter("empno");
String ename = request.getParameter("ename");
String department = request.getParameter("department");
String job = request.getParameter("job");
String salary = request.getParameter("salary");
System.out.println("empno");
Employee emp = new Employee(Integer.parseInt(empno),ename,department,job,salary);
ServletContext context = request.getServletContext();
List employees = (List)context.getAttribute("employees");
employees.add(emp);
context.setAttribute("employees", employees);
request.getRequestDispatcher("/employee.jsp").forward(request, response);
}
}package com.imooc.employee;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/list")
public class ListServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public ListServlet() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
ServletContext context = request.getServletContext();
if(context.getAttribute("employees")==null){
List list = new ArrayList();
Employee emp = new Employee(666,"李海","市场部","客户代表","10000");
list.add(emp);
list.add(new Employee(777,"张明","研发部","运维工程师","8000"));
context.setAttribute("employees", list);
}
request.getRequestDispatcher("/employee.jsp").forward(request, response);
}
}package com.imooc.employee;
public class Employee {
private int empno;
private String ename;
private String department;
private String job;
private String salary;
public Employee(int empno, String ename, String department, String job, String salary) {
super();
this.empno = empno;
this.ename = ename;
this.department = department;
this.job = job;
this.salary = salary;
}
public int getEmpno() {
return empno;
}
public void setEmpno(int empno) {
this.empno = empno;
}
public String getEname() {
return ename;
}
public void setEname(String ename) {
this.ename = ename;
}
public String getDepartment() {
return department;
}
public void setDepartment(String department) {
this.department = department;
}
public String getJob() {
return job;
}
public void setJob(String job) {
this.job = job;
}
public String getSalary() {
return salary;
}
public void setSalary(String salary) {
this.salary = salary;
}
}
1、改完employee.jsp之后，页面的css修饰效果失效，表现为：添加表单不能隐藏，显示出来的表单排版改变
2、新建Employee对象时，工资属性金额加上f之后报错，
35
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8回答
同学你好，Tomcat的webapps目录下存放的是我们的web应用。当启动Tomcat时，会将项目WebContent下的所有内容部署到webapps下，如下：
不会部署WebContent。所以不需要加WebContent。
祝学习愉快~
好帮手慕阿慧
2020-08-25 16:49:51
同学你好，
1、你的代码测试没有问题，页面排版不会改变。页面的css样式失效可能是css文件路径错误，同学可以使用绝对路径试试。
以bootstrap.css为例，参考代码如下：
<link href="${pageContext.request.contextPath }/css/bootstrap.css" type="text/css" rel="stylesheet"></link>
2、在本项目中，需要先访问/list，将employees集合存储到ServletContext作用域。添加员工时，会将员工对象添加到了employees集合中，所以可以不重新放进去，可以不调用setAttribute()方法。这是因为employees集合在servletContext作用域中，页面上遍历的是作用域中employees集合中的数据。
如下：
3、一般到学习了SSM，MyBatis框架，SpringBoot后看源码比较好。
如果我的回答解决了你的疑惑，请采纳！祝学习愉快！
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