post调用url：“接口url”＋/rpc
post调用参数body：
{
"ver": "接口版本号",
"soa":{"req":"123"}, //123取值随意？
"iface":"接口调用依赖方法",
"method":"接口调用方法名",
"args":{"arg0":"参数0","arg1":"参数1","arg2":"参数2"}
}
例如：请求url：http://vpcb-lpdinfra-stream-1.vm.elenet.me:8989/rpc
body：
{ "ver":"1.0",
"soa":{"req":"123"},
"iface":"me.ele.lpdinfra.prediction.service.PredictionService",
"method":"restaurant_make_order_time",
"args":{"arg2":""stable"","arg1":"{"code":["WIND"],"temperature":11.11}","arg0":"{"tracking_id":"100000000331770936","eleme_order_id":"100000000331770936","platform_id":"4","restaurant_id":"482571","dish_num":1,"dish_info":[{"entity_id":142547763,"quantity":1,"category_id":1,"dish_name":"番茄炒蛋","price":1.0}],"merchant_location":{"longitude":"121.47831425","latitude":"31.27576153"},"customer_location":{"longitude":"121.47831425","latitude":"31.27576153"},"created_at":1472809544,"confirmed_at":1472809545,"dishes_total_price":0.0,"food_boxes_total_price":2.0,"delivery_total_price":2.0,"pay_amount":0.0,"city_id":"1"}"}
}