content: package com.ruoyi.web.controller.common;
  
  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.stereotype.Controller;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.ResponseBody;
  import org.springframework.web.multipart.MultipartFile;
  import com.ruoyi.common.config.Global;
  import com.ruoyi.common.config.ServerConfig;
  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;
  
  /**
   * 通用请求处理
   * 
   * @author ruoyi
   */
  @Controller
  public class CommonController
  {
      private static final Logger log = LoggerFactory.getLogger(CommonController.class);
  
      @Autowired
      private ServerConfig serverConfig;
  
      /**
       * 通用下载请求
       * 
       * @param fileName 文件名称
       * @param delete 是否删除
       */
      @GetMapping("common/download")
      public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
      {
          try
          {
              if (!FileUtils.isValidFilename(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 = Global.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
       */
      @PostMapping("/common/upload")
      @ResponseBody
      public AjaxResult uploadFile(MultipartFile file) throws Exception
      {
          try
          {
              // 上传文件路径
              String filePath = Global.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("fileName", fileName);
              ajax.put("url", url);
              return ajax;
          }
          catch (Exception e)
          {
              return AjaxResult.error(e.getMessage());
          }
      }
  
      /**
       * 本地资源通用下载
       */
      @GetMapping("/common/download/resource")
      public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
              throws Exception
      {
          // 本地资源路径
          String localPath = Global.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());
      }
  }
  