關於<form:select>，formselect
今天寫基於SSM架構的程式，用到了<form:select>。由於一開始遇到了問題，所以在這裡加以記錄，供以後查看。
直接看jsp頁面的代碼
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 8 <title>Insert title here</title> 9 </head>10 <body>11 <form:form method="post" modelAttribute="employee">12 姓名：<form:input path="lastName"/><br>13 郵箱：<form:input path="email"/><br>14 性別：<form:input path="gender"/><br>15 部門：<form:select path="department" items="${departments}" itemValue="id" itemLabel="departmentName"></form:select>16 </form:form>17 </body>18 </html>
1.由於我們要引用Spring封裝的form標籤，所以一開始要配置引用標籤：
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
2.對於
<form:form method="post" modelAttribute="employee">
其modelAttribute="employee"中的employee是 在controller層中跳轉到該頁面的方法中 綁定的對象。 即：
@RequestMapping("/add") public ModelAndView toAddPage(){ ModelAndView mView=new ModelAndView(); mView.addObject("employee",new Employee()); mView.setViewName("add-stu"); mView.addObject("departments", departmentDao.getDepartments()); return mView; }
3對於
部門：<form:select path="department.id" items="${departments}" itemValue="id" itemLabel="departmentName"></form:select>
path="department" 為後續提取本方法中的對象預留了介面（類似於<input type="text" name="email">中的name）
items="${departments}" 表示你要遍曆的列表
itemValue="id" 表示列表選項中的value屬性（當對下拉式清單做出選擇時後台傳遞的資料）【可能有些偏頗，歡迎指教】
itemLabel="departmentName" 表示頁面列表中現實的屬性值
實現結果：
查看頁面源碼：
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