文件分块上传

末蓝、 2023-10-11 18:38 27阅读 0赞

<!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
    <h1>file test</h1>
    <input id="fileInput" type="file" /> <br />
    <input type="button" value="upload file" onclick="upload()" />
    <progress value="70" max="100">70 %</progress>
    <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
    <script>
        function upload() {
            var chunkSize = 1024*1024;
            var uploadSize = 0;
            var f = document.getElementById("fileInput").files[0];
            var num = f.size / chunkSize;
            num = parseInt(num);
            if(f.size % chunkSize > 0){
                num++;
            }
            debugger;
            for(var i = 0; i < num; i++){
                var data = f.slice(uploadSize, uploadSize+chunkSize);
                uploadSize = uploadSize+chunkSize;
    
                var formData = new FormData();
                formData.append("index", i+1);
                formData.append("num", num);
                formData.append("file", data);
    
                axios.post("/pursupinfo/services/srm/common/v1/upload",formData).then(function (response) {
                    console.log(response);
                }).catch(function (error) {
                    console.log(error);
                });
            }
        }
    
    </script>
    </body>
    </html>

@Consumes(MediaType.MULTIPART_FORM_DATA)
    @POST
    @Path("/upload")
    public BaseResultDto<List<AttachmentDto>> upload(@Multipart("file") Attachment file, @Multipart("index") int index,
    	@Multipart("num") int num) throws IOException {
    	String fileName = file.getDataHandler().getName();
    	InputStream inputStream = file.getDataHandler().getInputStream();
    
    	FileDto fileDto = new FileDto();
    	fileDto.setIndex(index);
    	fileDto.setNum(num);
    	byte[] bytes1 = SupCommonUtil.inputStream2Byte(inputStream, true).toByteArray();
    	fileDto.setData(bytes1);
    	list.add(fileDto);
    
    	if (index == num) {
    		list.sort(Comparator.comparingInt(FileDto::getIndex));
    		FileOutputStream outputStream = new FileOutputStream("C:/siefile/bak7/v8/test0001.zip");
    		for (FileDto dto : list) {
    			outputStream.write(dto.getData());
    		}
    		outputStream.close();
    	}
    	return new BaseResultDto();
    }

@Data
    public class FileDto {
        private int index;
        private int num;
        private byte[] data;
    }