1. 程式人生 > >SpringMVC實現頁面和java模型的資料互動以及檔案上傳下載和資料校驗

SpringMVC實現頁面和java模型的資料互動以及檔案上傳下載和資料校驗

1. 專案結構


2.  springMVC-servlet.xml 配置檔案

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
		http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 
		http://www.springframework.org/schema/tx 
		http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
		http://www.springframework.org/schema/context
		http://www.springframework.org/schema/context/spring-context-4.0.xsd
		http://www.springframework.org/schema/mvc
		http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
		<!-- 啟用註解 -->
		<mvc:annotation-driven/>
		<context:component-scan base-package="com.zhq.controller"/>
		<!--配置靜態資源訪問  -->
		<mvc:resources location="/images/" mapping="/images/**"/>
		<mvc:resources location="/css/" mapping="/css/**"/>
		<mvc:resources location="/js/" mapping="/js/**"/>
		<!--檢視分解器,把controller控制器返回的檢視名稱加上字首及字尾,檢視的路徑最終得到/檢視名.jsp  -->
       <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
       		<property name="prefix" value="/"></property>
       		<property name="suffix" value=".jsp"></property>
       </bean>
       <!--校驗器,配置validator  -->
       <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
       		<property name="providerClass" value="org.hibernate.validator.HibernateValidator"/>
       		<property name="validationMessageSource" ref="reloadableResourceBundleMessageSource"/>
       </bean>
       <!-- 配置驗證訊息 -->
       <bean id="reloadableResourceBundleMessageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource"></bean>
	   <!--檔案上傳的引數配置  -->
	   <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
	   		<!--10485760位元組,表示所有檔案大小總和不超過10M  -->
	   		<property name="maxUploadSize" value="10485760"/>
	   		<!--設定上傳檔案時快取區的大小  -->
	   		<property name="maxInMemorySize" value="4096"/>
	   		<!--設定字元編碼  -->
	   		<property name="defaultEncoding" value="UTF-8"/>
	   </bean>
	   <!--檔案上傳超過大小時的異常處理,頁面跳轉  -->
	   <bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
	   		<property name="exceptionMappings">
	   			<props>
	   				<!--配置捕獲異常型別  -->
	   				<prop key="org.springframework.web.multipart.MaxUploadSizeExceededException">/errorFile</prop>	
	   			</props>
	   		</property>
	   </bean>
</beans>
3.  web.xml 主配置檔案
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>SpringMVC_01</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <!--配置springMVC的啟動  -->
  <servlet>
  	<!--可以約束springMVC的主配置檔案如果在預設路徑下時的檔名  -->
  	<servlet-name>springMVC</servlet-name>
  	<!--配置前端控制器  -->
  	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  	<!--當主配置檔案不在預設路徑下,則需要配置檔案的路徑  -->
  	<init-param>
  		<param-name>contextConfigLocation</param-name>
  		<param-value>classpath:config/springMVC-servlet.xml</param-value>
  	</init-param>
  	<!--配置springMVC 隨程式啟動而啟動  -->
  	<load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
  	<servlet-name>springMVC</servlet-name>
  	<!--/:表示攔截所有請求  -->
  	<url-pattern>/</url-pattern>
  </servlet-mapping>
  <!-- springMVC中文亂碼過濾器 -->
  <filter>
  	<filter-name>characterEncodingFilter</filter-name>
  	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  	<!--初始化  encoding forceEncoding引數-->
  	<init-param>
  	 <param-name>encoding</param-name>
  	 <param-value>UTF-8</param-value>
  	</init-param>
  	<init-param>
  	 <param-name>forceEncoding</param-name>
  	 <param-value>true</param-value>
  	</init-param>
  </filter>
  <filter-mapping>
  	<filter-name>characterEncodingFilter</filter-name>
  	<url-pattern>/*</url-pattern>
  </filter-mapping>
  <error-page>
  	<error-code>404</error-code>
  	<location>/error.jsp</location>
  </error-page>
</web-app>
4. com.zhq.entity 
package com.zhq.entity;

import java.util.List;

public class Grade {
 private int gradeId;
 private String gradeName;
 private List<Student> students=null;

public Grade() {
	super();
}

public Grade(int gradeId, String gradeName) {
	super();
	this.gradeId = gradeId;
	this.gradeName = gradeName;
}

public int getGradeId() {
	return gradeId;
}
public void setGradeId(int gradeId) {
	this.gradeId = gradeId;
}
public String getGradeName() {
	return gradeName;
}
public void setGradeName(String gradeName) {
	this.gradeName = gradeName;
}

public List<Student> getStudents() {
	return students;
}
public void setStudents(List<Student> students) {
	this.students = students;
}
@Override
public String toString() {
	return "Grade [gradeId=" + gradeId + ", gradeName=" + gradeName + "]";
}
 
}
package com.zhq.entity;

import java.text.SimpleDateFormat;
import java.util.Date;

import javax.validation.constraints.Size;

import org.hibernate.validator.constraints.Email;
import org.hibernate.validator.constraints.NotEmpty;
import org.hibernate.validator.constraints.Range;
import org.springframework.format.annotation.DateTimeFormat;

import jdk.nashorn.internal.objects.annotations.SpecializedFunction;

public class Student {
	private int studentNo;
	@Size(min=2,max=10,message="學生姓名為2-10")
	private String name;
	private String sex;
	@Range(min=18,max=45,message="年齡18-45")
	private int age;
	@NotEmpty(message="手機不能為空")
	private String phone;
	@NotEmpty(message="地址不能為空")
	private String address;
	@DateTimeFormat(pattern="yyyy-MM-dd")
	private Date birthday;
	@Email(message="郵箱格式不正確")
	private String email;
	private Grade grade;
	
	public Student() {
		super();
	}
	
	public Student(int studentNo, String name, String sex, int age, String phone, String address
			) {
		super();
		this.studentNo = studentNo;
		this.name = name;
		this.sex = sex;
		this.age = age;
		this.phone = phone;
		this.address = address;
	}

	public int getStudentNo() {
		return studentNo;
	}
	public void setStudentNo(int studentNo) {
		this.studentNo = studentNo;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	public Date getBirthday() {
		return birthday;
	}
	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public Grade getGrade() {
		return grade;
	}
	public void setGrade(Grade grade) {
		this.grade = grade;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
	@Override
	public String toString() {
		return "Student [studentNo=" + studentNo + ", name=" + name + ", sex=" + sex + ", age=" + age + ", phone="
				+ phone + ", address=" + address + ", birthday=" +  sdf.format(birthday) + ", email=" + email
				+ "]";
	}
	
}
package com.zhq.entity;

public class Subject {
	private int subjectNo;
	private String subjectName;
	private int classHour;
	private Grade grade;
	public int getSubjectNo() {
		return subjectNo;
	}
	public void setSubjectNo(int subjectNo) {
		this.subjectNo = subjectNo;
	}
	public String getSubjectName() {
		return subjectName;
	}
	public void setSubjectName(String subjectName) {
		this.subjectName = subjectName;
	}
	public int getClassHour() {
		return classHour;
	}
	public void setClassHour(int classHour) {
		this.classHour = classHour;
	}
	public Grade getGrade() {
		return grade;
	}
	public void setGrade(Grade grade) {
		this.grade = grade;
	}
	@Override
	public String toString() {
		return "Subject [subjectNo=" + subjectNo + ", subjectName=" + subjectName + ", classHour=" + classHour
				+ "]";
	}
	
}
5. com.zhq.controller
package com.zhq.controller;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;

@Controller
@RequestMapping("/file")
public class FileController {
	//檔案上傳
	@RequestMapping("springUpload")
	public String springUpload(HttpServletRequest request) {
		//將當前上下文初始化給CommonsMultipartResolver(多部分解析器)
		CommonsMultipartResolver multipartResolver=new CommonsMultipartResolver(request.getSession().getServletContext());
		//檢查form中是否有multipart/form-data
		if(multipartResolver.isMultipart(request)) {
			//將request變成多部分request
			MultipartHttpServletRequest multiRequest=(MultipartHttpServletRequest) request;
			//獲取multiRequest中所有檔名
			Iterator iter=multiRequest.getFileNames();
			//遍歷所有檔案
			while(iter.hasNext()) {
				MultipartFile file=multiRequest.getFile(iter.next().toString());
				if(file!=null&&file.getOriginalFilename()!="") {
					String path=request.getSession().
							getServletContext().getRealPath("/userfile")+"/"+
							file.getOriginalFilename();
					//上傳
					try {
						file.transferTo(new File(path));
						System.out.println(path);
						request.setAttribute("msg", "上傳成功!");
					} catch (IllegalStateException e) {		
						e.printStackTrace();
					} catch (IOException e) {
						e.printStackTrace();
					}
				}
			}
		}else {
			request.setAttribute("msg", "上傳失敗!");
		}
		return "uploadMsg";
	}
	//獲取下載檔名列表
	@RequestMapping("springFilelist")
	public String springFilelist(HttpServletRequest request) {
		//實現思路:先獲取userfile目錄下所有檔案的檔名,儲存,然後跳轉到downloadFile.jsp展示
		//建立集合Map<包含唯一標記的檔名,簡短檔名>
		Map<String,String> fileNames=new HashMap<String,String>();
		//獲取上傳目錄,以及其下所有的檔名
		String basePath=request.getSession().getServletContext().getRealPath("/userfile")+"/";
		//目錄
		File file=new File(basePath);
		//目錄下,所有檔名
		String list[]=file.list();
		//遍歷,封裝
		if(list!=null&&list.length>0) {
			for(int i=0;i<list.length;i++) {
				//全名
				String fileName=list[i];
				//短名
				String shortName=fileName.substring(fileName.lastIndexOf("\\")+1);
				//封裝
				fileNames.put(fileName, shortName);
			}
		}
		//儲存到request域
		try {
			request.setCharacterEncoding("UTF-8");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		request.setAttribute("fileNames", fileNames);
		return "downloadFile";	
	}
	//根據檔名下載檔案
	@RequestMapping("springDownload")
	public void springDownload(HttpServletRequest request,HttpServletResponse response) {
		//獲取下載檔名稱
		String fileName=request.getParameter("fileName");
		//GET方式獲得的漢字需要轉碼,框架已經設定所以此處不用
        /*fileName = new String(fileName.getBytes("ISO8859-1"),"UTF-8");*/
		//先獲取上傳目錄路徑
		String basePath=request.getSession().getServletContext().getRealPath("/userfile")+"/";
		try {
			//獲取一個檔案流
			InputStream in = new FileInputStream(new File(basePath,fileName));
			// 如果檔名是中文,需要進行url編碼
	        fileName = URLEncoder.encode(fileName, "UTF-8");
			// 設定下載的響應頭
	        response.setHeader("content-disposition", "attachment;fileName=" + fileName);
	        //獲取response位元組流
	        OutputStream out = response.getOutputStream();
	        byte[] b = new byte[1024];
	        int len = -1;
	        while ((len = in.read(b)) != -1){
	            out.write(b, 0, len);
	        }
	        // 關閉
	        out.close();
	        in.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}	
	}

}
package com.zhq.controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.zhq.entity.Grade;

@Controller
@RequestMapping("/grade")
public class GradeController {
	//方式一傳遞資料到前端
	@RequestMapping("/list/map")//預設返回grade/list/map.jsp
	public Map<String,Grade> gradeList(){
		Map<String,Grade> map=new HashMap<String, Grade>();
		Grade grade=new Grade();
		grade.setGradeName("一年級");
		map.put("a", grade);
		return map;
	}
	//方式二傳遞資料到前端
	@RequestMapping("/list")
	public String gradeList(Model model){
		List<Grade> gradelist=new ArrayList<Grade>();
		Grade grade=new Grade();
		grade.setGradeName("二年級");
		gradelist.add(grade);
		model.addAttribute("gradelist", gradelist);
		return "grade/gradelist";//返回檢視grade/gradelist.jsp
	}
}
package com.zhq.controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/*import javax.servlet.http.HttpServletRequest;*/

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.zhq.entity.Grade;
import com.zhq.entity.Student;

@Controller
@RequestMapping(value= {"/student","/stu"})
public class StudentController {
	@RequestMapping("/list")
	public ModelAndView list() {
		List<Student> list=new ArrayList<Student>();
		list.add(new Student(1000, "張三", "男", 20, "13125283736", "廣東廣州"));
		list.add(new Student(1001, "李四", "男", 21, "13838384388", "廣東珠海"));
		list.add(new Student(1002, "王婷", "女", 22, "15238384499", "廣東中山"));
		return new ModelAndView("studentList","data",list);
	}
	//method=RequestMethod.GET表示只接收GET請求,一般要初始化資料時呼叫
	@RequestMapping(value={"/add","/add1"},method=RequestMethod.GET)
	public ModelAndView add() {
		List<Grade> list=new ArrayList<Grade>();//初始化年級下拉框資料
		list.add(new Grade(1, "一年級"));
		list.add(new Grade(2, "二年級"));
		list.add(new Grade(3, "三年級"));
		return new ModelAndView("studentAdd","glist",list);
	}
	//method=RequestMethod.POST表示只接收POST請求
	//@Validated作用就是將pojo內的註解資料校驗規則生效,BindingResult用於獲取校驗失敗資訊
	@RequestMapping(value={"/add","/add2"},method=RequestMethod.POST)
	public ModelAndView add(@Validated Student student,BindingResult result,Model model) {
		//傳參取值有三種方式(前兩種標籤名和引數名要相同):
		//1.ModelAndView add(Student student)自動封裝成物件
		//2.ModelAndView add(String name, int gradeId)自動匹配引數
		//3.ModelAndView add(HttpServletRequest request)獲取請求
		if(result.hasErrors()) {
			model.addAttribute("msg", "驗證資訊錯誤!");
			Map<String,String> errors=new HashMap<String,String>();
			for(FieldError err:result.getFieldErrors()) {//遍歷錯誤提示將錯誤資訊存入Map
				errors.put(err.getField(), err.getDefaultMessage());
			}
			model.addAttribute("errors", errors);
			List<Grade> list=new ArrayList<Grade>();//年級下拉框資訊
			list.add(new Grade(1, "一年級"));
			list.add(new Grade(2, "二年級"));
			list.add(new Grade(3, "三年級"));
			model.addAttribute("glist", list);
			return new ModelAndView("studentAdd");
			/*return new ModelAndView("forward:/student/add1");*/
		}else {
			//轉發到/student/list方法或者使用redirect:/student/list
			return new ModelAndView("redirect:/student/list");
		}
		
	}
	//佔位符方式傳遞引數/del/100
	@RequestMapping("/del/{id:\\d+}")//\\d+表示只匹配數字
	public ModelAndView delete(@PathVariable(value="id") Integer id) {
		System.out.println(id);
		return new ModelAndView("redirect:/student/list","id",id);
	}
	//預設傳遞引數方式/find?id=100
	@RequestMapping("/find")
	public ModelAndView findStudentByid(Integer id) {
		System.out.println(id);
		return new ModelAndView("studentAdd","id",id);
	}
}
6.  頁面
<%@ 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>Insert title here</title>
<link rel="stylesheet" href="css/index.css" />
</head>
<body>
	<img src="images/ws.gif"><br>
	<a href="${pageContext.request.contextPath}/student/list">學生資訊列表</a><br>
	<a href="${pageContext.request.contextPath}/student/add">新增學生</a><br>
	<a href="${pageContext.request.contextPath}/grade/list/map">年級列表1</a><br>
	<a href="${pageContext.request.contextPath}/grade/list">年級列表2</a><br>
	<a href="${pageContext.request.contextPath}/uploadFile.jsp">多檔案上傳</a><br>
	<a href="${pageContext.request.contextPath}/file/springFilelist">檔案下載</a><br>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>Insert title here</title>
<style type="text/css">
	table {border-collapse:collapse;}
	table,th,td {border: 1px solid black;}
</style>
</head>
<body>
	歡迎!
	<table>
		<tr>
			<th>姓名</th>
			<th>性別</th>
			<th>年齡</th>
			<th>電話</th>
			<th>地址</th>
			<th>操作</th>
		</tr>
		<c:forEach items="${data}" var="student" >
		<tr>
			<td>${student.name}</td>
			<td>${student.sex}</td>
			<td>${student.age}</td>
			<td>${student.phone}</td>
			<td>${student.address}</td>
			<td><a href="${pageContext.request.contextPath}/student/del/${student.studentNo}" onclick="return confirm('你確定要刪除嗎?')">刪除</a></td>
		</tr>
		</c:forEach>
	</table>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>Insert title here</title>
</head>
<body>
	新增頁面!
	<form action="${pageContext.request.contextPath}/student/add" method="post">
		<p>姓名:<input name="name">${errors.name}<br></p>
		<p>年齡:<input name="age">${errors.age}<br></p>
		<p>性別:
			<select name="sex">
				<option value="男">男</option>
				<option value="女">女</option>
			</select>
		</p>
		<p>地址:<input name="address">${errors.address}<br></p>
		<p>班級:
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>Insert title here</title>
</head>
<body>
	新增頁面!
	<form action="${pageContext.request.contextPath}/student/add" method="post">
		<p>姓名:<input name="name">${errors.name}<br></p>
		<p>年齡:<input name="age">${errors.age}<br></p>
		<p>性別:
			<select name="sex">
				<option value="男">男</option>
				<option value="女">女</option>
			</select>
		</p>
		<p>地址:<input name="address">${errors.address}<br></p>
		<p>班級:
			<select name="grade.gradeId">
			<c:forEach items="${glist}" var="grade">
				<option value="${grade.gradeId}">${grade.gradeName}</option>
			</c:forEach>
			</select><br>
		</p>
		<p><input type="submit" value="儲存">${msg}<br></p>	
	</form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>Insert title here</title>
</head>
<body>
	<c:forEach items="${map}" var="entry">
		${entry.key}:${entry.value.gradeName}<br>
	</c:forEach>
	
		${a.gradeName}<br>

</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>Insert title here</title>
</head>
<body>
	<c:forEach items="${gradelist}" var="grade">
		${grade.gradeName}<br>
	</c:forEach>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
	<h2>多檔案上傳</h2>
	<form action="${pageContext.request.contextPath}/file/springUpload" name="uploadFile" enctype="multipart/form-data" method="post">
		<p><input type="file" name="file1"></p>
		<p><input type="file" name="file2"></p>
		<p><input type="file" name="file3"></p>
		<input type="submit" value="上傳">
	</form>
</body>
</html>
<%@ 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>Insert title here</title>
</head>
<body>
	${msg}
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
	檔案超出大小10M!上傳失敗!
	<a href="${pageContext.request.contextPath}/uploadFile.jsp">返回</a>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>下載頁面</title>
<style type="text/css">
	table {border-collapse:collapse;}
	table,th,td {border: 1px solid black;}
</style>
</head>
<body>
	<h3 align="center">下載列表</h3>
	<table align="center">
        <tr>
            <th>序號</th>
            <th>檔名</th>
            <th>操作</th>
        </tr>
        <c:forEach var="en" items="${requestScope.fileNames}" varStatus="vs">
            <tr>
                <td>${vs.count }</td>
                <td>${en.value }</td>
                <td>
                    <%--<a href="${pageContext.request.contextPath }/springDownload?method=down&..">下載</a>--%>
                    <!-- 構建一個地址  -->
                    <c:url var="url" value="springDownload">
                        <c:param name="method" value="down"></c:param>
                        <c:param name="fileName" value="${en.key}"></c:param>
                    </c:url>
                    <!-- 使用上面地址 -->
                    <a href="${url}">下載</a>
                </td>
            </tr>
        </c:forEach>
    </table>          
</body>
</html>
<%@ 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>Insert title here</title>
</head>
<body>
	錯誤頁面!404
</body>
</html>
7. 最終效果