本文使用 Spring Web model-view-controller (MVC) framework 建立一個簡單的一個檔案上傳程式 1、本文中使用的相關技術 Eclipse 4.2 Version: Juno Service Release 2 Maven 3.0.5 JAVA JDK 1.6.0_24 Spring 3.2.2.RELEASE。

 
P.S Spring 3.x, 需 JDK 1.5 以上。
2、建立一個Maven專案
 
P.S 請參考前一篇文章 建立一個基本簡單的Spring MVC project
 
3、加入 Spring 3.0 jar 加入在Maven專案中的pom.xml 程式碼： <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">   <modelVersion>4.0.0</modelVersion>   <groupId>com.sample</groupId>   <artifactId>SpringMVC_File_Upload_sample</artifactId>   <packaging>war</packaging>   <version>0.0.1-SNAPSHOT</version>   <name>SpringMVC_File_Upload_sample Maven Webapp</name>   <url>http://maven.apache.org</url>   <build>       <finalName>SpringMVC_File_Upload_sample</finalName>   </build>   <properties>       <spring.version>3.2.2.RELEASE</spring.version>   </properties>   <dependencies>           <!-- Spring 3 dependencies -->    <dependency>          <groupId>org.springframework</groupId>      <artifactId>spring-core</artifactId>      <version>${spring.version}</version>    </dependency>      <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-web</artifactId>      <version>${spring.version}</version>    </dependency>      <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-webmvc</artifactId>      <version>${spring.version}</version>           </dependency>               <dependency>  <groupId>org.springframework</groupId>  <artifactId>spring-context-support</artifactId>  <version>${spring.version}</version>  </dependency>   <!--  jstl dependencie  -->           <dependency>  <groupId>jstl</groupId>  <artifactId>jstl</artifactId>  <version>1.2</version>  </dependency>   <!--  file dependencie  -->  <dependency>  <groupId>commons-fileupload</groupId>  <artifactId>commons-fileupload</artifactId>  <version>1.3</version>  </dependency>             </dependencies> </project>
 
 
4. 建立JSP 頁面 目錄 : src/main/webapp/ 檔名 : index.jsp <jsp:forward page="show.html"></jsp:forward>
 
 
目錄 : src/main/webapp/WEB-INF/jsp 檔名 : file_upload_form.jsp 程式碼： <%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%> <html> <head> <title>Spring MVC Multiple File Upload</title> </head> <body> <h1>Spring Multiple File Upload example</h1> <form:form method="post" action="save.html" modelAttribute="uploadForm" enctype="multipart/form-data"> <p>please select file </p> <table> <tr> <td><input name="files[0]" type="file" /></td> </tr> </table> <br/><input type="submit" value="Upload" /> </form:form> </body> </html>
 
目錄 : src/main/webapp/WEB-INF/jsp 檔名 : file_upload_success.jsp 程式碼： <%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <html> <head> <title>Spring MVC Multiple File Upload</title> </head> <body> <h1>Spring Multiple File Upload example</h1> <p>Following files are uploaded successfully.</p> <ol> <c:forEach items="${files}" var="file"> <li>${file}</li> </c:forEach> </ol> </body> </html>
 
5. 加入spring設定到Web application web.xml
 
檔名 : web.xml 程式碼： <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">   <display-name>Archetype Created Web Application</display-name>   <servlet>  <servlet-name>spring</servlet-name>  <servlet-class>    org.springframework.web.servlet.DispatcherServlet  </servlet-class>  <load-on-startup>1</load-on-startup>   </servlet>   <servlet-mapping>  <servlet-name>spring</servlet-name>  <url-pattern>*.html</url-pattern>   </servlet-mapping> </web-app>
 
6. 建立 Spring mvc Config xml 檔
檔名: spring-servlet.xml
程式碼：
 
<?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: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.xsd
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc 
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
 
 <context:annotation-config />
 <context:component-scan base-package="com.springmvc.fileupload.sample.controller"/>
 
 <bean id="multipartResolver"
  class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
 
  <bean id="jspViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
  </bean>
</beans>
 
 
7. 建立可 以暫時存放檔案的資料型態 如： 目錄 : src/main/java/com/springmvc/fileupload/sample/form 檔名 : FileUploadForm.java  程式碼： 
package com.springmvc.fileupload.sample.form;

import java.util.List;

import org.springframework.web.multipart.MultipartFile;

public class FileUploadForm {

 private List files;

 public List getFiles() {
  return files;
 }

 public void setFiles(List files) {
  this.files = files;
 }
}
 
 
8. 建立Controller & Mapping     在Spring 3 裡大量使用 annotation 。 如： @Controller 目錄 : src/main/java/com/springmvc/fileupload/sample/controller 檔名 : FileUploadController.java 程式碼： 
package com.springmvc.fileupload.sample.controller;

import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.multipart.MultipartFile;

import com.springmvc.fileupload.sample.form.FileUploadForm;

@Controller
public class FileUploadController {

 @RequestMapping(value = "/show", method = RequestMethod.GET)
 public String displayForm() {
  return "file_upload_form";
 }
 
 @RequestMapping(value = "/save", method = RequestMethod.POST)
 public String save(
   @ModelAttribute("uploadForm") FileUploadForm uploadForm,
     Model map) {
  
  List files = uploadForm.getFiles();

  List fileNames = new ArrayList();
  
  if( files != null && files.size() > 0 ) {
   for (MultipartFile multipartFile : files) {
    String fileName = multipartFile.getOriginalFilename();
    fileNames.add(fileName);
   }
  }
  
  map.addAttribute("files", fileNames);
  return "file_upload_success";
 }
}
 
 
9. 結果
 
 
 
 

 

 

其它文章

文章標籤
全站熱搜
創作者介紹
創作者 PG Levin Li 的頭像
PG Levin Li

程式開發學習之路

PG Levin Li 發表在 痞客邦 留言(0) 人氣(1,469)