JavaWeb——课程管理系统（1）jsp界面---18.11.29
作者：互联网
add.jsp
<%@page import="com.jaovo.msg.Util.ValidateUtil"%><%@page import="com.jaovo.msg.Util.UserException"%>
<%@page import="com.jaovo.msg.dao.UserDaoImpl"%>
<%@page import="com.jaovo.msg.model.User"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<%
//接收客户端传递过来的参数
String name = request.getParameter("name");
String time = request.getParameter("time");
String jieci =request.getParameter("jieci");
String college =request.getParameter("college");
String tid =request.getParameter("tid");
String tname =request.getParameter("tname");
String number =request.getParameter("number");
boolean validate = ValidateUtil.validateNull(request, new String[]{"name","time","jieci","college","tid","tname","number"});
if(!validate){
%>
<jsp:forward page="addInput.jsp"></jsp:forward>
<%
}
User user = new User();
user.setName(name);
user.setTime(time);
user.setJieci(jieci);
user.setCollege(college);
user.setTid(tid);
user.setTname(tname);
user.setNumber(number);
UserDaoImpl userDao = new UserDaoImpl();
try{
userDao.add(user);
//重定向
response.sendRedirect("index.jsp");//跳转
%>
<%
}catch(UserException e){
%>
<h2 style="color:red ; font-size:50px">发生错误 : <%=e.getMessage() %></h2>
<%
}
%>
</html> addInput.jsp <%@page import="com.jaovo.msg.Util.ValidateUtil"%>
<%@page import="java.util.Map"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>用户添加页面</title>
</head>
<body>
<%-- <%Map<String,String> errorMsg = (Map<String,String>)request.getAttribute("errorMsg"); --%>
<%-- %> --%>
<form action="add.jsp" method="get">
<table align="center" border="1" width="500">
<tr>
<td>课程名称 : </td>
<td>
<input type="text" name="name" />
<%
// if(errorMsg != null){
// if(errorMsg.get("name") != null){
// out.println( errorMsg.get("name"));
// }
// }
%>
<%=ValidateUtil.showError(request, "name") %>
</td>
</tr>
<tr>
<td>上课时间:</td>
<td>
<input type="text" name="time" />
<%
// if(errorMsg != null){
// if(errorMsg.get("time") != null){
// out.println( errorMsg.get("time"));
// }
// }
%>
<%=ValidateUtil.showError(request, "time") %>
</td>
</tr>
<tr>
<td>课程节次:</td>
<td>
<input type="text" name="jieci" />
<%
// if(errorMsg != null){
// if(errorMsg.get("jieci") != null){
// out.println( errorMsg.get("jieci"));
// }
// }
%>
<%=ValidateUtil.showError(request, "jieci") %>
</td>
</tr>
<tr>
<td>所属学院:</td>
<td>
<input type="text" name="college" />
<%
// if(errorMsg != null){
// if(errorMsg.get("college") != null){
// out.println( errorMsg.get("college"));
// }
// }
%>
<%=ValidateUtil.showError(request, "college") %>
</td>
</tr>
<tr>
<td>教师工号:</td>
<td>
<input type="text" name="tid" />
<%
// if(errorMsg != null){
// if(errorMsg.get("tid") != null){
// out.println( errorMsg.get("tid"));
// }
// }
%>
<%=ValidateUtil.showError(request, "tid") %>
</td>
</tr>
<tr>
<td>教师姓名:</td>
<td>
<input type="text" name="tname" />
<%
// if(errorMsg != null){
// if(errorMsg.get("tname") != null){
// out.println( errorMsg.get("tname"));
// }
// }
%>
<%=ValidateUtil.showError(request, "tname") %>
</td>
</tr>
<tr>
<td>限制人数:</td>
<td>
<input type="text" name="number" />
<%
// if(errorMsg != null){
// if(errorMsg.get("number") != null){
// out.println( errorMsg.get("number"));
// }
// }
%>
<%=ValidateUtil.showError(request, "number") %>
</td>
</tr>
<tr align="center">
<td colspan="2">
<input type="submit" value="提交" />
<input type="reset" value="重置" />
</td>
</tr>
</table>
</form>
</body>
</html> delete.jsp <%@page import="com.jaovo.msg.Util.DaoFactory"%>
<%@page import="com.jaovo.msg.dao.UserDaoImpl"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%
int id = Integer.parseInt(request.getParameter("id"));
//工厂模式
UserDaoImpl userDao = DaoFactory.getDaoImpl();
userDao.delete(id);
response.sendRedirect("./index.jsp");
%> index.jsp <%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>首页</title>
<style>
.a{
font-size: 26px;
margin-top: 20px;
}
</style>
</head>
<body>
<div align="center">
<h1 style="color: red;">欢迎来到课程系统</h1>
<div class="a">
<a href="addInput.jsp">增</a>
</div>
<div class="a">
<a href="list.jsp">删</a>
</div>
<div class="a">
<a href="list.jsp">改</a>
</div>
<div class="a">
<a href="list.jsp">查</a>
</div>
</div>
</body>
</html> list.jsp <%@page import="com.jaovo.msg.model.User"%>
<%@page import="java.util.List"%>
<%@page import="com.jaovo.msg.dao.UserDaoImpl"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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=UTF-8">
<title>用户展示界面</title>
</head>
<%
UserDaoImpl userDao = new UserDaoImpl();
List<User> users = userDao.load();
%>
<body>
<table align="center" border="1" width="500">
<tr>
<td>课程编号</td>
<td>课程名称</td>
<td>开课时间</td>
<td>开课节次</td>
<td>所属学院</td>
<td>教师工号</td>
<td>教师名称</td>
<td>限制人数</td>
</tr>
<%
for( User user : users ){
%>
<tr>
<td> <%=user.getId() %></td>
<td> <%=user.getName() %></td>
<td> <%=user.getTime() %></td>
<td> <%=user.getJieci() %></td>
<td> <%=user.getCollege() %></td>
<td> <%=user.getTid() %></td>
<td> <%=user.getTname() %></td>
<td> <%=user.getNumber() %></td>
<td> <a href="delete.jsp?id=<%=user.getId() %>" >删除</a></td>
<td> <a href="updateInput.jsp?id=<%=user.getId() %>" >修改</a></td>
</tr>
<%
}
%>
</table>
</body>
</html> update.jsp <%@page import="com.jaovo.msg.model.User"%>
<%@page import="com.jaovo.msg.Util.DaoFactory"%>
<%@page import="com.jaovo.msg.dao.IUserDao"%>
<%@page import="com.jaovo.msg.Util.ValidateUtil"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%
//获取客户端传递过来的参数
int id = Integer.parseInt(request.getParameter("id"));
String time = request.getParameter("time");
String jieci = request.getParameter("jieci");
String college = request.getParameter("college");
String tid = request.getParameter("tid");
String tname = request.getParameter("tname");
String number = request.getParameter("number");
boolean validate = ValidateUtil.validateNull(request, new String[]{"age","major"});
if(!validate){
%>
<jsp:forward page="updateInput.jsp"></jsp:forward>
<%
}
IUserDao userDao = DaoFactory.getDaoImpl();
User user = userDao.load(id);
user.setTime(time);
user.setJieci(jieci);
user.setCollege(college);
user.setTid(tid);
user.setTname(tname);
user.setNumber(number);
userDao.update(user);
response.sendRedirect("index.jsp");
%> updateInput.jsp <%@page import="com.jaovo.msg.Util.ValidateUtil"%>
<%@page import="com.jaovo.msg.model.User"%>
<%@page import="com.jaovo.msg.Util.DaoFactory"%>
<%@page import="com.jaovo.msg.dao.IUserDao"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>用户修改页面</title>
</head>
<body>
<%
//获取客户端传递过来的参数
int id = Integer.parseInt(request.getParameter("id"));
IUserDao userDao = DaoFactory.getDaoImpl();
User user = userDao.load(id);
%>
<form action="update.jsp" method="get">
<table align="center" border="1" width="500">
<input type="hidden" name="id" value="<%=user.getId() %>" />
<tr>
<td>课程名称 : </td>
<td>
<input type="text" name="name" value="<%=user.getName() %>" />
<%=ValidateUtil.showError(request, "name") %>
</td>
</tr>
<tr>
<td>开课时间:</td>
<td>
<input type="text" name="time" value="<%=user.getTime() %>" />
<%=ValidateUtil.showError(request, "time") %>
</td>
<tr>
<td>开课节次 : </td>
<td>
<input type="text" name="jieci" value="<%=user.getJieci() %>" />
<%=ValidateUtil.showError(request, "jieci") %>
</td>
</tr>
<tr>
<td>所属学院 : </td>
<td>
<input type="text" name="college" value="<%=user.getCollege() %>" />
<%=ValidateUtil.showError(request, "college") %>
</td>
</tr>
<tr>
<td>教师工号 : </td>
<td>
<input type="text" name="tid" value="<%=user.getTid() %>" />
<%=ValidateUtil.showError(request, "tid") %>
</td>
</tr>
<tr>
<td>教师姓名 : </td>
<td>
<input type="text" name="tname" value="<%=user.getTname() %>" />
<%=ValidateUtil.showError(request, "tname") %>
</td>
</tr>
<tr>
<td>限制人数 : </td>
<td>
<input type="text" name="number" value="<%=user.getNumber() %>" />
<%=ValidateUtil.showError(request, "number") %>
</td>
</tr>
<tr align="center">
<td colspan="2">
<input type="submit" value="提交" />
<input type="reset" value="重置" />
</td>
</tr>
</table>
</form>
</body>
</html>
标签：18.11,JavaWeb,get,errorMsg,request,29,getParameter,user,String 来源： https://www.cnblogs.com/mitang0-0/p/10308316.html