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最新推荐文章于 2025-03-24 17:08:04 发布

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分类专栏： Java idea

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本文介绍了一个基于HTTP协议的文件分段上传和合并的方法，包括获取上传ID、分段上传文件、以及最终的分段合并流程。通过使用OBS客户端和服务端API，实现了大文件的高效稳定上传。

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 List<PartEtag> partEtags = Collections.synchronizedList(new ArrayList<PartEtag>());

    //初始化
    @PostMapping("/getuploadId")
    @ApiOperation(value = "获取uploadid", notes = "获取uploadid")
    public String multipart(HttpServletRequest request) {
        String fileName=request.getParameter("fileName");
        String resourceId=UUID.randomUUID().toString().replaceAll("-","");
        String objectName=resourceId+fileName;
        JSONObject jsonObject=new JSONObject();
        ObsClient obsClient=new ObsClient(ak,sk,endPoint);
        InitiateMultipartUploadRequest request1 = new InitiateMultipartUploadRequest(g_bucketName, objectName);
        InitiateMultipartUploadResult result = obsClient.initiateMultipartUpload(request1);
        String uploadId = result.getUploadId();
        jsonObject.put("objectName",objectName);
        jsonObject.put("uploadId",uploadId);
        return uploadId;
    }
        @PostMapping("/multipartupload")
    @ApiOperation(value = "分段上传接口", notes = "分段上传接口")
    public int multipartupload(HttpServletRequest request, @RequestParam("file") MultipartFile file) {
        ObsClient obsClient=new ObsClient(ak,sk,endPoint);
        JSONObject jsonObject=new JSONObject();
        EsdkObs2Controller esdkObs2Controller=new EsdkObs2Controller();
        String uploadId=request.getParameter("uploadId");
       String objectName=request.getParameter("objectName");
        String total= request.getParameter("total");
        MultipartFile multipartFile=file;
        String sortNumber=request.getParameter("sortNumber");
        //上传
        PartEtag partEtag=esdkObs2Controller.partUpload(g_bucketName,objectName,uploadId,Integer.parseInt(sortNumber),multipartFile);
        partEtags.add(partEtag);
        //如果上传的总段数等于段号时候合并
        if(total == sortNumber){
            //分片合并
            esdkObs2Controller.combine(g_bucketName,objectName,uploadId,partEtags);
        }

        return 1;
    }

    /**
     * @Title: 分段上传
     */
    public PartEtag partUpload(String bucketName,String objectName,String uploadId,int sortNumber,MultipartFile file){
        ObsClient obsClient=new ObsClient(ak,sk,endPoint);
        PartEtag partEtag=null;
        try{
            UploadPartRequest  request=new UploadPartRequest(bucketName,objectName);
            request.setUploadId(uploadId);
            request.setPartNumber(sortNumber);
            request.setInput(file.getInputStream());
            UploadPartResult result=obsClient.uploadPart(request);
            partEtag= new PartEtag(result.getEtag(),result.getPartNumber());
        }catch (Exception e){
            System.out.print("--------");
        }
        return partEtag;
    }

    /**
     * @Title: 分段合并
     */
    public boolean combine(String bucketName,String objectName,String uploadId,List<PartEtag> partList){
        ObsClient obsClient=new ObsClient(ak,sk,endPoint);
        try{
          CompleteMultipartUploadRequest request=  new CompleteMultipartUploadRequest(bucketName,objectName,uploadId,partList);
            CompleteMultipartUploadResult result=obsClient.completeMultipartUpload(request);
            String url=result.getObjectUrl();
        }catch (Exception e){
            System.out.print("--------");
        }
        return true;
    }