基于Spring MVC和Mybatis的在线批改作业系统设计源码

package com.code.admin; import com.code.util.GlobalResult; import org.springframework.http.MediaType; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.util.HashMap; import java.util.Map; import java.util.Random; /** * 文件上传请求处理类 */ @Controller public class FileUploadController { @RequestMapping(value = "/uploadFile", produces = MediaType.APPLICATION_JSON_VALUE + ";charset=utf-8") @ResponseBody public GlobalResult uploadFile(MultipartFile file, HttpServletRequest request) { if (file == null) { return GlobalResult.errorMsg("文件不能为空！"); } String fileSub = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")).toLowerCase(); //if (".jpg".equals(fileSub) || ".jpeg".equals(fileSub) || ".png".equals(fileSub) || ".gif".equals(fileSub)) { if (true) { Random d = new Random(); String img = System.currentTimeMillis() + "_" + d.nextInt(10) + "" + fileSub; //获取当前项目上传文件路径 中的upload文件中 //将当前日期格式化为文件夹路径 例如"20190203" //获取项目路径 项目名（上下文） String basePath = request.getSession().getServletContext().getRealPath("/uploads"); System.out.println("basePath = " + basePath); /* 使用配置文件配置文件上传路径 String dateStr = (new SimpleDateFormat("yyyyMMdd/")).format(new Date()); String path = ConfigUtil.getUploadPath() + dateStr; //读取配置文件中的路径+时间 */ String path = basePath; try { File f = new File(path); if (!f.exists()) { f.mkdirs(); } file.transferTo(new File(f, img)); } catch (Exception e) { e.printStackTrace(); return GlobalResult.errorMsg("文件上传错误，文件夹不能创建"); } //获取项目路径 例如项目名为test 则值为 /test String contextPath = request.getServletContext().getContextPath(); //获取图片上传绝对路径保存数据库 //String contextPath = request.getScheme() + "://" + request.getServerName()+ ":" + request.getServerPort() + request.getContextPath()+ "/"; Map<String, String> map = new HashMap<>(); map.put("src", contextPath + "/uploads/" + img); map.put("savePath", path + File.separatorChar + img); return GlobalResult.ok(map); } else { return GlobalResult.errorMsg("文件格式不支持,请重新选择！"); } } /** * layui上传文件 * 返回数据格式 * { * "code": 0 //0表示成功，其它失败 * ,"msg": "" //提示信息 //一般上传失败后返回 * ,"data": { * "src": "图片路径" * ,"title": "图片名称" //可选 * } * } * * @param file * @param request * @return */ @RequestMapping(value = "/layeditUploadFile", produces = MediaType.APPLICATION_JSON_VALUE + ";charset=utf-8") @ResponseBody public Map layeditUploadFile(MultipartFile file, HttpServletRequest request) { Map map = new HashMap(); if (file == null) { map.put("code", -1); map.put("msg", "文件不能为空！"); return map; } String fileSub = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")).toLowerCase(); if (".jpg".equals(fileSub) || ".jpeg".equals(fileSub) || ".png".equals(fileSub) || ".gif".equals(fileSub)) { Random d = new Random(); String img = System.currentTimeMillis() + "_" + d.nextInt(10) + "" + fileSub; //获取当前项目上传文件路径 中的upload文件中 //将当前日期格式化为文件夹路径 例如"20190203" //获取项目路径 项目名（上下文） String basePath = request.getSession().getServletContext().getRealPath("/uploads"); System.out.println("basePath = " + basePath); /* 使用配置文件配置文件上传路径 String dateStr = (new SimpleDateFormat("yyyyMMdd/")).format(new Date()); String path = ConfigUtil.getUploadPath() + dateStr; //读取配置文件中的路径+时间 */ String path = basePath; try { File f = new File(path); if (!f.exists()) { f.mkdirs(); } file.transferTo(new File(f, img)); } catch (Exception e) { e.printStackTrace(); map.put("code", -1); map.put("msg", "文件上传错误，文件夹不能创建！"); return map; } //获取项目路径 String contextPath = request.getServletContext().getContextPath(); map.put("code", "0"); //0代表成功 map.put("msg", "上传成功success"); //0代表成功 Map data = new HashMap(); data.put("src", contextPath + "/uploads/" + img); data.put("savePath", path + img); map.put("data", data); //0代表成功 return map; } else { map.put("code", -1); map.put("msg", "文件格式不支持,请重新选择！"); return map; } } /** * 文件下载 * * @param fileName 文件名称 例如 /CommonWeb/uploads/1570244659826_1.jpg * @param request * @param response * @return */ @RequestMapping("/downloadFile") public String download(String fileName, HttpServletRequest request, HttpServletResponse response) { fileName = fileName.split("\\/")[3]; System.out.println("fileName = " + fileName); response.setContentType("text/html;charset=utf-8"); try { request.setCharacterEncoding("UTF-8"); } catch (UnsupportedEncodingException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } BufferedInputStream bis = null; BufferedOutputStream bos = null; String downLoadPath = request.getSession().getServletContext().getRealPath("/uploads/") + fileName; ; //注意不同系统的分隔符 // String downLoadPath =filePath.replaceAll("/", "\\\\\\\\"); //replace replaceAll区别 ***** System.out.println("downLoadPath=" + downLoadPath); try { long fileLength = new File(downLoadPath).length(); response.setContentType("application/x-msdownload;"); response.setHeader("Content-disposition", "attachment; filename=" + new String(fileName.getBytes("utf-8"), "ISO8859-1")); response.setHeader("Content-Length", String.valueOf(fileLength)); bis = new BufferedInputStream(new FileInputStream(downLoadPath)); bos = new BufferedOutputStream(response.getOutputStream()); byte[] buff = new byte[2048]; int bytesRead; while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) { bos.write(buff, 0, bytesRead); } } catch (Exception e) { e.printStackTrace(); } finally { if (bis != null) { try { bis.close(); } catch (IOException e) { // TODO Auto-generated catch block