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接口声明

@RestController@RequestMapping("/upload")@Api(tags="文件上传")public class AliyunOssController {
       @Autowired    UploadService service;    @PostMapping(value = "/comment/{bId}/{uId}")    @ApiOperation(value = "上传评论图片或视频，成功后返回文件路径",notes = "/upload/comment/板块ID/用户ID")    public JSONObject comment(@ApiParam(value = "版块ID", required = true) @PathVariable String bId,                              @ApiParam(value = "用户ID", required = true) @PathVariable String uId,                              @ApiParam(value = "文件", required = true) @RequestParam(value="f") MultipartFile file) {
           String url = service.upload(bId,uId,file);        ……                JSONObject jo = new JSONObject();        jo.put("code",200);        jo.put("msg","ok");        jo.put("data",url);        return jo;    }}

接口实现

@Service("uploadService")public class UploadService {
       public String upload(String bId,                         String uId,                         MultipartFile file) {
           //获得文件保存路径        String url = getFilePath(bId, uId, file);		saveToLocal(file);        return url;    }	private void saveToLocal(MultipartFile file){
   //上传到本地	    try {
   	        String fileName = file.getOriginalFilename();	        InputStream input = file.getInputStream();	        OutputStream outputStream = new FileOutputStream("q:" + File.separator + fileName);	        byte[] b = new byte[4096];	        int count = input.read(b);	        while (count != -1) {
   	            for(int i = 0; i < count; i++){
   	                outputStream.write(b[i]);	            }	            count = input.read(b);	        }	        input.close();	        outputStream.close();	    } catch (FileNotFoundException e) {
   	        e.printStackTrace();	    } catch (IOException e) {
   	        e.printStackTrace();	    }	}}

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