上传

shaofcom 2020-11-11 原文

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());
  }
  }