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javaEE Springmvc,檔案(圖片)上傳

需要額外匯入檔案上傳的Jar包:commons-io和commons-fileupload的Jar包

ItemController.java(Controller後端控制器,檔案上傳(接收檔案型別的引數)):

package com.xxx.springmvc.controller;

import java.io.File;
import java.util.UUID;

import org.apache.commons.io.FilenameUtils;  //需要匯入commons-io和commons-fileupload的Jar包
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;

import com.xxx.springmvc.pojo.QueryVo;
import com.xxx.springmvc.service.ItemService;

//商品管理
@Controller
@RequestMapping(value = "/item")
public class ItemController {
	
	@Autowired
	private ItemService itemService;
	
	
	//接收請求引數(檔案型別)
	@RequestMapping(value = "/updateItem.action")
	//public String updateitem(QueryVo vo,MultipartFile pictureFile) throws Exception {
	public String updateitem(MultipartFile pictureFile) throws Exception {
		//MultipartFile表示接收前端file表單元素的檔案;形參pictureFile要和file元素的name屬性值相同。
		
		String name = UUID.randomUUID().toString().replaceAll("-", "");
		//獲取上傳檔案的字尾名。 jpg
		String ext = FilenameUtils.getExtension(pictureFile.getOriginalFilename());
		//將圖片儲存到指定位置。
		pictureFile.transferTo(new File("D:\\upload\\" + name + "." + ext));
		
		//....................
		return "redirect:/itemlist.action";
	}
	
}

src/springmvc.xml(Springmvc的核心配置檔案,配置檔案上傳解析器):

<?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:p="http://www.springframework.org/schema/p"
	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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">


        <!-- 開啟註解掃描。 掃描 @Controler  @Service等註解   -->
        <context:component-scan base-package="com.xxx"/>
        
        <!-- 註解驅動; 指定處理器對映器、處理器介面卡 -->
        <mvc:annotation-driven />
        
        <!-- 配置檔案上傳解析器;id必須設定為"multipartResolver" -->
        <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        	<!-- 可以限制上傳圖片的大小   單位B -->
        	<property name="maxUploadSize" value="5000000" />  <!-- 大約5M大小 -->
        </bean>
        
        
        <!-- 檢視解析器 -->
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        	<property name="prefix" value="/WEB-INF/jsp/"/>  <!-- 檢視(jsp頁面)請求路徑的字首 -->
        	<property name="suffix" value=".jsp"/>      <!-- 字尾 -->
        </bean>
        
   </beans>