SpringMVC上传文件

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文件上传

上传文件依赖的jar包

<dependency>    <groupId>commons-fileupload</groupId>     <artifactId>commons-fileupload</artifactId>    <version>1.3.3</version>  </dependency>  <dependency>    <groupId>commons-io</groupId>    <artifactId>commons-io</artifactId>    <version>2.5</version></dependency>

加入上传文件所需的Bean

在配置文件spring-mvc.xml 加入

 <bean id="multipartResolver"      class="org.springframework.web.multipart.commons.CommonsMultipartResolver">      <property name="maxUploadSize" value="209715200" />         <property name="defaultEncoding" value="UTF-8" />      <property name="resolveLazily" value="true" />  </bean>

Controller

PicController.java

package com.xwx.controller;import java.io.File;import java.io.IOException;import java.util.Date;import javax.servlet.http.HttpServletRequest;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.multipart.MultipartFile;import com.xwx.model.Pic;import com.xwx.service.PicService;@Controller@RequestMapping("/pic")public class PicController {    @Autowired    private PicService picService;    public PicService getPicService() {        return picService;    }    public void setPicService(PicService picService) {        this.picService = picService;    }    @RequestMapping("/add")    public String add(HttpServletRequest request){        return "pic/add";    }    @RequestMapping("/doAdd")    public String doAdd(HttpServletRequest request, @RequestParam(value="pic", required=true) MultipartFile pic){        String fileName = pic.getOriginalFilename();        String ext = fileName.substring(fileName.lastIndexOf(".") + 1);        //文件路径         String path = "D:\\upload\\123\\";        //文件名称        String newFileName =  new Date().getTime() + "." + ext;        File targetFile = new File(path, newFileName);        if(!targetFile.exists()){            //创建目录            targetFile.mkdirs();        }        try {            //生成图片            pic.transferTo(targetFile);            /** 写入数据库            Date createTime = new Date();             Pic picModel = new Pic();            picModel.setPic(newFileName);            picModel.setCreateTime(createTime);            picService.insert(picModel);            **/        } catch (IllegalStateException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }        return null;    }}

jsp

pic/add.jsp

<%@ 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><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>add</title></head><body><c:if test="${errors != null}"><div style="color:red">    <c:forEach items="${errors}" var="error">        <p>${error.defaultMessage}</p>    </c:forEach>    </div></c:if>    <form action="${pageContext.request.contextPath }/pic/doAdd.do" method="post" enctype="multipart/form-data">        <p>            <input type="file" name="pic">        </p>        <p>            <input type="submit" name="" value="提交">        </p>    </form></body></html>

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