首先看一下結果：
在首頁main-form設置Student Form鏈接
進入student/showForm編輯姓名，由於建立了student類保存和獲取姓、名，所以在studentController中的建立student對象，使用@modelAttribute將編輯文本框中的內容和(student)theStudent.lastName，theStudent.firstName綁定，再通過這個StudentController將student-confirmation傳到頁面的時候顯示出來。
下面是代碼：
Student 類
public class Student {
private String firstName;
private String lastName;
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public Student() {
}
}
StudentController
@Controller
@RequestMapping("/student")
public class StudentController {
@RequestMapping("/showForm")
public String showForm(Model theModel) {
//create a student object
Student theStudent = new Student();
//add student object to the model
theModel.addAttribute("student",theStudent);
return "student-form";
}
@RequestMapping("/processForm")
public String processForm(@ModelAttribute("student") Student theStudent) {
System.out.println("theStudent:" + theStudent.getFirstName()
+" "+theStudent.getLastName());
return "student-confirmation";
}
}
@Controller
public class HomeController {
@RequestMapping("/")
public String showPage() {
return "main-menu";
}
}
/spring-mvc-demo/WebContent/WEB-INF/view/main-menu.jsp
<!DOCTYPE>
<html>
<body>
<h2>Spring MVC Demo - Home Page</h2>
<hr>
<a href="hello/showForm">Hello World Form</a>
<br><br>
<a href="student/showForm">Student Form</a>
</body>
</html>
/spring-mvc-demo/WebContent/WEB-INF/view/student-form.jsp
<!DOCTYPE HTML>
<html>
<head>
<title>Student Registration Form</title>
</head>
<body>
<form:form action="processForm" modelAttribute="student">
First Name: <form:input path="firstName" />
<br><br>
Last Name: <form:input path="lastName" />
<br><br>
<input type = "submit" value="Submit" />
</form:form>
</body>
</html>
/spring-mvc-demo/WebContent/WEB-INF/view/student-confirmation.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<title>Student Confirmation</title>
</head>
<body>
The student is confirmed: ${student.firstName} ${student.lastName}
</body>
</html>
下拉列表（一） //在JSP網頁上編輯
Drop-Down Lists的實現其實只需要在student類添加country的attribute，在student-form.jsp裏面把下拉列表的code加進去，然後在student-confirmation頁面添加顯示country屬性就可以了。
student類
private String country;
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
student-form.jsp
Last Name: <form:input path="lastName" />
<br><br>
Country:
<form:select path="country">
<form:option value="China" label="China" />
<form:option value="France" label="France" />
<form:option value="India" label="India" />
<form:option value="Germany" label="Germany" />
</form:select
<br><br>
student-confirmation.jsp
<br><br>
Country: ${student.country}
下拉列表（一） //在java code裏面實現
實現方法只需要在student類裏面編輯一個hashmap保存各個國家的值，然後在student-form.jsp裏面調用就行。
student類
private LinkedHashMap<String,String> countryOptions;
public Student() {
// populate country options : used ISO country code
countryOptions = new LinkedHashMap<>();
countryOptions.put("BR","Brazil"); //(key,value)
countryOptions.put("FR","France");
countryOptions.put("DE","Gremany");
countryOptions.put("IN","India");
}
public LinkedHashMap<String, String> getCountryOptions() {
return countryOptions;
}
student-form.jsp
<form:select path="country">
<form:options items="${student.countryOptions}" />
</form:select>