地址 : http://api.twflight.com/api/Mileage
方法 : GET
内容 : PVGPEKJFK
返回 : {"MileageInfoList":[{"XSFSMcode":"PVGPEK","Distance":676},{"XSFSMcode":"PEKJFK","Distance":6817}],"IsError":false,"ErrorCode":0,"Message":""}