logstash的Json格式数据中field多了个点 ，无法传递到es中。

原始数据来源于RabbitMQ。
如下：

{

	"host":{

		"address":"192.168.127.1",

		"port":9983,

		"serviceName":"streamService2"

	},

	"spans":[

		{

			"begin":1500877798555,

			"end":1500877798821,

			"exportable":true,

			"logs":[

				{

					"event":"sr",

					"timestamp":1500877798557

				},

				{

					"event":"ss",

					"timestamp":1500877798821

				}

			],

			"name":"http:/service1",

			"parents":[777698211216806359],

			"remote":true,

			"spanId":4799424895103297227,

			"traceId":777698211216806359

		},

		{

			"begin":1500877798556,

			"end":1500877798821,

			"exportable":true,

			"name":"http:/service1",

			"parents":[4799424895103297227],

			"spanId":-3738027106310948226,

			"tags":{

				"http.host":"localhost",

				"http.method":"GET",

				"http.path":"/service1",

				"http.url":"http://localhost:9983/service1"

			},

			"traceId":777698211216806359

		}

	]

}

我在传递到es中时报错，说
"error"=>{"type"=>"mapper_parsing_exception", "reason"=>"Field name [http.host] cannot contain '.'"}}

我知道是字段中包含了 .  导致的，我是用rename结果无法进行重命名。请问各位怎么解决啊？