fastDFS图片上传下载

// 上传合同fastfds//var fileUrl = $(‘#fileUrl‘).val();addUpload($(‘#path‘));function addUpload(fileInput){$(fileInput).fileupload({ ??????????url: ?‘uploadingJson.do‘, ??????????dataType: ‘json‘, ??????????done: function (e, res) { ??????????????var result =res.result; ??????????????if(result.message != undefined){ ??????????????bootBoxDialog(result.message); ??????????????return false; ??????????????} ??????????????var url=result.data.url; ??????????????$(this).parent().css("background-color", ""); ??????????????$(this).parent().find("#pathValue").val(url); ??$(this).parent().parent().find("a").remove(); ??$(this).parent().parent().find("#del").show(); ??$(this).parent().after(‘<a target="_bank" href="‘+url+‘">  附件查看</a>‘); ??$(this).parent().after(‘<img ?src="readImage.do?imagePath=‘+url+‘">‘); ??????????}, ??????????progressall: function (e, data) { ??????????} ??????});}

package com.guilf.consumer.controller;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;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.RequestMethod;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.multipart.MultipartFile;import com.alibaba.fastjson.JSONObject;import com.guilf.consumer.image.FastDFSClient;//import com.guilf.project.entity.User;//import com.guilf.project.service.UserService;@Controller("imageController")@RequestMapping("/")public class ImageController{//@Autowired//private UserService userService;@RequestMapping("imageInAndOut") ???public String hello(){ ???????return "imageInAndOut"; ???????????}@RequestMapping(value = "uploadingJson", method = RequestMethod.POST) ???@ResponseBody ???public Object upload(HttpServletRequest request, HttpServletResponse response, ????????????????????????@RequestParam("file") MultipartFile uploadFile) throws Exception ???{ ???????String fileId; ???????try ???????{ ???????????fileId = FastDFSClient.uploadFile(uploadFile.getInputStream(), uploadFile.getOriginalFilename()); ???????} catch (IOException e) ???????{ ???????????throw new Exception("文件上传失败"); ???????} ???????JSONObject attachment = new JSONObject(); ???????attachment.put("name", uploadFile.getOriginalFilename()); ???????attachment.put("size", uploadFile.getSize()); ???????attachment.put("url", fileId); ???????String userAgent = request.getHeader("User-Agent"); ???????//logger.info(userAgent); ???????JSONObject rejson = new JSONObject(); ???????rejson.put("data", attachment); ???????if (userAgent.contains("MSIE 9")) ???????{ ?????????// ?logger.info("是IE浏览器，返回纯文本"); ???????????response.setContentType("text/plain"); ???????????return rejson.toJSONString(); ???????} ???????return rejson; ???}//上传文件会自动绑定到MultipartFile中 ???@RequestMapping(value="uploadImage",method=RequestMethod.POST) ???public String upload(HttpServletRequest request, ??????????@RequestParam("description") String description, ??????????@RequestParam("file") MultipartFile file) throws Exception { ??????System.out.println(description); ??????//如果文件不为空，写入上传路径 ??????if(!file.isEmpty()) { ??????????//上传文件路径 ????????// ?String path = request.getServletContext().getRealPath("/images/"); ??????????String path = "E:\\myEclipseGuilf\\workspace\\iamge"; ??????????//上传文件名 ??????????String filename = file.getOriginalFilename(); ??????????File filepath = new File(path,filename); ??????????//判断路径是否存在，如果不存在就创建一个 ??????????if (!filepath.getParentFile().exists()) { ???????????????filepath.getParentFile().mkdirs(); ??????????} ??????????//将上传文件保存到一个目标文件当中 ??????????file.transferTo(new File(path + File.separator + filename)); ??????????return "success"; ??????} else { ??????????return "error"; ??????} ???} ?//上传文件会自动绑定到MultipartFile中AJAX提交的 ???@RequestMapping(value="uploadImage_ajax",method=RequestMethod.POST) ???@ResponseBody ???public Object uploadAjax(HttpServletRequest request, ??????????@RequestParam("file") MultipartFile file) throws Exception { ??????//如果文件不为空，写入上传路径 ??????if(!file.isEmpty()) { ??????????//上传文件路径 ????????// ?String path = request.getServletContext().getRealPath("/images/"); ??????????String path = "E:\\myEclipseGuilf\\workspace\\iamge"; ????????// ?String path = request.getSession().getServletContext().getRealPath("/images/"); ??????// ?String path = request.getContextPath(); ??????????//上传文件名 ??????????String filename = file.getOriginalFilename(); ??????????File filepath = new File(path,filename); ??????????//判断路径是否存在，如果不存在就创建一个 ??????????if (!filepath.getParentFile().exists()) { ???????????????filepath.getParentFile().mkdirs(); ??????????} ??????????//将上传文件保存到一个目标文件当中 ??????????file.transferTo(new File(path + File.separator + filename)); ??????????JSONObject attachment = new JSONObject(); ??????????attachment.put("name", filename); ??????????attachment.put("url", ?path + File.separator + filename); ??????????JSONObject rejson = new JSONObject(); ??????????rejson.put("data", attachment); ??????????return rejson; ??????} else { ??????????return "error"; ??????} ???} ??????//读图片到前台展示@RequestMapping(value = "readImage")public void readImage(HttpServletRequest request,HttpServletResponse response,@RequestParam("imagePath") String imagePath) {//String imagePath = request.getParameter("imagePath");// 图片绝对路径try {File file = new File(imagePath);if (file.exists()) {DataOutputStream temps = new DataOutputStream(response.getOutputStream());DataInputStream in = new DataInputStream(new FileInputStream(imagePath));byte[] b = new byte[2048];while ((in.read(b)) != -1) {temps.write(b);temps.flush();}in.close();temps.close();}} catch (Exception e) {e.printStackTrace();}}}