如何调用获取单据附件下载地址接口接口？

API 名称: 获取单据附件下载地址接口 请求方式: POST 请求 URL: /yonbip/znbz/rbsm/api/bill/common/getFileDownloadUrl 请求参数: [ { "name": "pk_billtype", "description": "单据类型(znbzbx_memoapply:通用申请单;znbzbx_busistrip:出差申请单;znbzbx_expensebill:通用报销单;znbzbx_travelexpbill:差旅报销单)", "required": true, "type": "string" }, { "name": "billID", "description": "单据ID", "required": true, "type": "long" }, { "name": "filePathObjs", "description": "附件信息", "required": true, "type": "object", "children": [ { "name": "vfilepath", "description": "附件路径", "required": true, "type": "string" }, {