SelectionCourseSystem/WebRoot/jsp/admin/selection_add.jsp

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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
	<head>
		<meta charset="utf-8">
		<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/jsp/css/admin.css">
		<script type="text/javascript" src="${pageContext.request.contextPath}/jsp/js/All.js" defer="true"></script>
		<script type="text/javascript" src="${pageContext.request.contextPath}/jsp/js/jquery-3.3.1.min.js"></script>
	
	</head>
	
	<body>
	<s:if test="hasActionErrors()"> 
		<s:iterator value="actionErrors"> 
		<script language="javascript"> 
			alert("<s:property escapeHtml='false'/>") ;
			
		</script> 
		
		</s:iterator> 
	</s:if> 
		
		<div class="search">
			<div class="update_container">
			<table cellpadding="10px" cellspacing="2px">
				<tr>
					<td>
						<input type="text" id="course_id" name="course_id" style="border-radius: 20px;text-indent: 20px;height: 25px;">
					</td>
					<td>
						<button  type="button" onclick="javascript:checkSelectionId();">按课程编号查询</button>
					</td>
					<td>
						<input type="text" id="course_name" name="course_name" style="border-radius: 20px;text-indent: 20px;height: 25px;">
					</td>
					<td>
						<button type="button"  onclick="javascript:checkSelectionName(); ">按课程名称查询</button>
					</td>
				</tr>
			</table>
			</div>
		</div>
		<div class="display_all">
			<div class="display_table_bottom" style="width: 100%;margin-left: 0;"></div>
			<div class="display_container" style="margin-left: 100px;width:100%;">
			<s:if test="%{#session.pb.pageData.size()==0}"><span style="color:red;">数据库暂无该对象数据</span></s:if>
			<s:else>
			
			<table cellpadding="10px" cellspacing="2px" border="1px solid" style="text-align: center;">
				<tr>
					<td>
						课程编号
					</td>
					<td>
						课程名称
					</td>
					<td>
						授课教师
					</td>