spring MVC 上传图片 DEMO

来源：互联网发布：怎样做数据透视表编辑：程序博客网时间：2024/05/14 11:47

HTML 页面：

<%--  Created by IntelliJ IDEA.  User: john  Date: 14-9-1  Time: 下午4:49  To change this template use File | Settings | File Templates.--%><%@ page contentType="text/html;charset=UTF-8" language="java" %><html><head>    <title></title></head><body><form action="upload" method="post" enctype="multipart/form-data">    <table>        <tr>            <td width="100" align="right">照片：</td>            <td><input type="file" name="studentPhoto"/>   <input type="submit"></td>        </tr>    </table></form></body></html>

后台Controller

package com.gochaintv.copyright.controller;import com.gochaintv.copyright.util.FileUpload;import org.apache.commons.io.FileUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;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 javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.File;import java.io.IOException;import java.io.OutputStream;/** * Created by shhao. * Date: 14-9-1 * Time:下午4:32 */@Controllerpublic class FileUploadController {    Logger logger = LoggerFactory.getLogger(FileUploadController.class);    @RequestMapping("upload")    public void upload(@RequestParam("studentPhoto") MultipartFile file, HttpServletRequest request, HttpServletResponse response) throws IOException {        String filePath = FileUpload.uploadFile(file, request);        logger.info("filePath:" + filePath);        response.setContentType("text/html;charset=utf8");        response.getWriter().write("<img src='"+filePath+"'/>");    }    @RequestMapping("download")    public void download(String fileName, HttpServletResponse response) throws IOException {        OutputStream os = response.getOutputStream();        try {            response.reset();            response.setHeader("Content-Disposition", "attachment; filename=" + fileName);            response.setContentType("image/jpeg; charset=utf-8");            os.write(FileUtils.readFileToByteArray(FileUpload.getFile(fileName)));            os.flush();        } finally {            if (os != null) {                os.close();            }        }    }}

package com.gochaintv.copyright.util;import org.apache.commons.io.FileUtils;import org.springframework.web.multipart.MultipartFile;import javax.servlet.http.HttpServletRequest;import java.io.File;import java.io.IOException;import java.util.Date;/** * Created by shhao. * Date: 14-9-1 * Time:下午4:12 */public class FileUpload {    public static final String FILE_PATH = "/upload/";    //文件上传    public static String uploadFile(MultipartFile file, HttpServletRequest request) throws IOException {        String fileName = file.getOriginalFilename();        File tempFile = new File(FILE_PATH, new Date().getTime() + String.valueOf(fileName));        if (!tempFile.getParentFile().exists()) {            tempFile.getParentFile().mkdir();        }        if (!tempFile.exists()) {            tempFile.createNewFile();        }        file.transferTo(tempFile);        return "/download?fileName=" + tempFile.getName();    }    public static File getFile(String fileName) {        return new File(FILE_PATH, fileName);    }}

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