content: package com.platform.common;
  
  import java.util.ArrayList;
  import java.util.List;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import com.platform.common.constant.Constants;
  import com.platform.common.utils.StringUtils;
  import com.platform.common.utils.file.FileUploadUtils;
  import com.platform.common.utils.file.FileUtils;
  import com.platform.common.config.DataCompareConfig;
  import com.platform.common.config.ServerConfig;
  import com.platform.common.web.domain.AjaxResult;
  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.RequestMapping;
  import org.springframework.web.bind.annotation.ResponseBody;
  import org.springframework.web.multipart.MultipartFile;
  
  /**
   * 通用请求处理
   * 
   * @author AllDataDC
   */
  @Controller
  @RequestMapping("/common")
  public class CommonController
  {
      private static final Logger log = LoggerFactory.getLogger(CommonController.class);
  
      @Autowired
      private 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 = DataCompareConfig.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")
      @ResponseBody
      public AjaxResult uploadFile(MultipartFile file) throws Exception
      {
          try
          {
              // 上传文件路径
              String filePath = DataCompareConfig.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")
      @ResponseBody
      public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception
      {
          try
          {
              // 上传文件路径
              String filePath = DataCompareConfig.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 = DataCompareConfig.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);
          }
      }
  }
  