后端自带工具controller

package com.ruoyi.web.controller.common;import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUploadUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.framework.config.ServerConfig;/*** 通用请求处理* * @author ruoyi*/
@RestController
@RequestMapping("/common")
public class CommonController
{private static final Logger log = LoggerFactory.getLogger(CommonController.class);@Autowiredprivate ServerConfig serverConfig;private static final String FILE_DELIMETER = ",";/*** 通用下载请求* * @param fileName 文件名称* @param delete 是否删除*/@GetMapping("/download")public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request){try{if (!FileUtils.checkAllowDownload(fileName)){throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));}String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);String filePath = RuoYiConfig.getDownloadPath() + fileName;response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);FileUtils.setAttachmentResponseHeader(response, realFileName);FileUtils.writeBytes(filePath, response.getOutputStream());if (delete){FileUtils.deleteFile(filePath);}}catch (Exception e){log.error("下载文件失败", e);}}/*** 通用上传请求（单个）*/@PostMapping("/upload")public AjaxResult uploadFile(MultipartFile file) throws Exception{try{// 上传文件路径String filePath = RuoYiConfig.getUploadPath();// 上传并返回新文件名称String fileName = FileUploadUtils.upload(filePath, file);String url = serverConfig.getUrl() + fileName;AjaxResult ajax = AjaxResult.success();ajax.put("url", url);ajax.put("fileName", fileName);ajax.put("newFileName", FileUtils.getName(fileName));ajax.put("originalFilename", file.getOriginalFilename());return ajax;}catch (Exception e){return AjaxResult.error(e.getMessage());}}/*** 通用上传请求（多个）*/@PostMapping("/uploads")public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception{try{// 上传文件路径String filePath = RuoYiConfig.getUploadPath();List<String> urls = new ArrayList<String>();List<String> fileNames = new ArrayList<String>();List<String> newFileNames = new ArrayList<String>();List<String> originalFilenames = new ArrayList<String>();for (MultipartFile file : files){// 上传并返回新文件名称String fileName = FileUploadUtils.upload(filePath, file);String url = serverConfig.getUrl() + fileName;urls.add(url);fileNames.add(fileName);newFileNames.add(FileUtils.getName(fileName));originalFilenames.add(file.getOriginalFilename());}AjaxResult ajax = AjaxResult.success();ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));return ajax;}catch (Exception e){return AjaxResult.error(e.getMessage());}}/*** 本地资源通用下载*/@GetMapping("/download/resource")public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)throws Exception{try{if (!FileUtils.checkAllowDownload(resource)){throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));}// 本地资源路径String localPath = RuoYiConfig.getProfile();// 数据库资源地址String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);// 下载名称String downloadName = StringUtils.substringAfterLast(downloadPath, "/");response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);FileUtils.setAttachmentResponseHeader(response, downloadName);FileUtils.writeBytes(downloadPath, response.getOutputStream());}catch (Exception e){log.error("下载文件失败", e);}}
}

前端自带下载插件

html部分

<el-button type="primary" @click="downloadTemplate5">下载文件</el-button>

js部分

const downloadTemplate5 = () => {let resource = '/profile//2024/04/26/20240426135219A001.xlsx'proxy.$download.resource(resource ,false);
};