[概述] 1.通过webapi单据查询接口获取上传文件字段的值,其为Base64编码的字符串 2.将获取到的bBase64字符串反序列化成Json数组,json数组中包括完整的文件附件信息。示例代码如下: Kingdee.BOS.JSON.JSONArray array = new Kingdee.BOS.JSON.JSONArray(); array = SerializatonUtil.DeserializeFromBase64(s); for (int i = 0; i < array.Count; i++) { string serverFileName = Convert.ToString(((Kingdee.BOS.JSON.JSONObject)array[i])["ServerFileName"]); string fileName = Convert.ToString(((Kingdee.BOS.JSON.JSONObject)array[i])["FileName"]); byte[] fileContent = ((Kingdee.BOS.JSON.JSONObject)array[i])["FileContent"] as byte[]; string path = "D:\\tmp\\" + fileName; File.WriteAllBytes(path, fileContent); }