二开案例.WebApi.文件服务.附件上传

请求数据包：

{
    "FileName": "8.webp",
    "FormId": "PUR_PurchaseOrder",
    "IsLast": "true",
    "InterId": "107361",
    "BillNo": "CGDD001939",
    "AliasFileName": "8.webp",
    "FileId": "914ad20995d34178b34ec264b23f5f52",
    "SendByte": "iVBORw0KGgrkJggg=="
}

响应数据包：

{
    "Result": {
        "ResponseStatus": {
            "IsSuccess": true,
            "Errors": [],
            "SuccessEntitys": [{
                "Id": 692162,
                "Number": null,
                "DIndex": 0
            }],
            "SuccessMessages": [],
            "MsgCode": 0
        },
        "FileId": "1ce11300f61444ef929f6d2edf281f31",
        "Message": ""
    }
}

<2>编写附件上传的WebApi接口调用代码，本案例提供了附件上传（小于6M的文件）和附件分块上传两种（大于6M的文件）使用场景，如下。

using Kingdee.BOS.WebApi.Client;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Newtonsoft.Json;
using System;
using System.IO;
namespace Jac.XkDemo.BOS.WebApiTests
{
    /// <summary>
    /// WebApi.文件服务.附件上传
    /// </summary>
    [TestClass]
    public class FileServiceUploadTest
    {
        /// <summary>
        /// 附件上传（小于6M的文件可用）
        /// </summary>
        [TestMethod]
        public void UploadTest()
        {
            // 星空站点Url
            var webSite = "http://172.17.3.148/k3cloud/";
            // 数据中心ID(账套ID)
            var dbId = "6371de6bdb991c";
            // 登录账号          
            var userName = "demo";
            //第三方系统应用Id             
            var password = "888888";
            // 登录语言
            var lcId = 2052;
            // 登录
            var client = new K3CloudApiClient(webSite);
            var loginResult = client.Login(dbId, userName, password, lcId);
            if (!loginResult)
            {
                Assert.IsFalse(true);
                return;
            }
            // 给采购订单上传单据头附件
            var formId = "PUR_PurchaseOrder";
            var billNo = "CGDD001939";
            var id = "107361"; // SELECT * FROM T_PUR_POORDER WHERE FBILLNO='CGDD001939'
            var fileName = "8.webp";
            var filePath = @"C:\Users\Public\Pictures\Sample Pictures\8.webp";
            var fileBytes = File.ReadAllBytes(filePath);
            var fileBase64String = Convert.ToBase64String(fileBytes);
            /*
            {
                "FileName": "8.webp",
                "FormId": "PUR_PurchaseOrder",
                "IsLast": "true",
                "InterId": "107361",
                "BillNo": "CGDD001939",
                "AliasFileName": "8.webp",
                "FileId": "914ad20995d34178b34ec264b23f5f52",
                "SendByte": "iVBORw0KGgrkJggg=="
            }
                         */
            var dataObj = new
            {
                FileName = fileName,
                FormId = formId,
                IsLast = "true",
                InterId = id, // SELECT * FROM T_PUR_POORDER WHERE FBILLNO='CGDD001939'
                BillNo = billNo,
                AliasFileName = fileName,
                SendByte = fileBase64String
            };
            var data = JsonConvert.SerializeObject(dataObj);
            //Console.WriteLine(data);
            var result = client.AttachmentUpload(data);
            Console.WriteLine(result);
            var responseDto = ResponseDto.Parse(result);
            Assert.IsTrue(responseDto != null);
            Assert.IsTrue(responseDto.Result != null);
            Assert.IsTrue(responseDto.Result.ResponseStatus != null);
            Assert.IsTrue(responseDto.Result.ResponseStatus.IsSuccess);
            Assert.IsTrue(!string.IsNullOrWhiteSpace(responseDto.Result.FileId));
            Console.WriteLine(responseDto.Result.FileId);
        }
        /// <summary>
        /// 附件分块上传（大于6M的文件可用）
        /// </summary>
        [TestMethod]
        public void BlockUploadTest()
        {
            // 星空站点Url
            var webSite = "http://172.17.3.148/k3cloud/";
            // 数据中心ID(账套ID)
            var dbId = "6371de6bdb991c";
            // 登录账号          
            var userName = "demo";
            //第三方系统应用Id             
            var password = "888888";
            // 登录语言
            var lcId = 2052;
            // 登录
            var client = new K3CloudApiClient(webSite);
            var loginResult = client.Login(dbId, userName, password, lcId);
            if (!loginResult)
            {
                Assert.IsFalse(true);
                return;
            }
            // 给采购订单上传单据头附件
            var formId = "PUR_PurchaseOrder";
            var billNo = "CGDD001939";
            var id = "107361"; // SELECT * FROM T_PUR_POORDER WHERE FBILLNO='CGDD001939'
            var fileName = "6.webp";
            var filePath = @"C:\Users\Public\Pictures\Sample Pictures\6.webp";
            var blockSize = 1024 * 1024; // 分块大小：1M
            var fileId = string.Empty;
            using (var fsRead = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
            {
                if (fsRead.Length <= 0)
                {
                    throw new Exception("文件内容不允许为空。");
                }
                while (true)
                {
                    // 放里面声明，第一次填入完整字节数据，第二次若只填充一部分，此时后面的直接数组并不会被清空。
                    var content = new byte[blockSize];
                    int size = fsRead.Read(content, 0, content.Length);
                    if (size == 0)
                    {
                        break;
                    }
                    var isLast = (size != blockSize);
                    var uploadBytes = new byte[size];
                    Array.Copy(content, uploadBytes, size);
                    var fileBase64String = Convert.ToBase64String(uploadBytes);
                    /*
{
    "FileName": "8.webp",
    "FormId": "PUR_PurchaseOrder",
    "IsLast": "true",
    "InterId": "107361",
    "BillNo": "CGDD001939",
    "AliasFileName": "8.webp",
    "FileId": "914ad20995d34178b34ec264b23f5f52",
    "SendByte": "iVBORw0KGgrkJggg=="
}
                     */
                    var dataObj = new
                    {