Method geocoder

prototype/addressComponent.js:145–174

(req)

	}
	//通过ip地址获取精确位置
	async geocoder(req){
		try{
			const address = await this.guessPosition(req);
			const params = {
				key: this.tencentkey,
				location: address.lat + ',' + address.lng
			};
			let res = await this.fetch('http://apis.map.qq.com/ws/geocoder/v1/', params);
			if (res.status != 0) {
				params.key = this.tencentkey2;
	 			res = await this.fetch('http://apis.map.qq.com/ws/geocoder/v1/', params);
	 		}
	 		if (res.status != 0) {
	 			params.key = this.tencentkey3;
	 			res = await this.fetch('http://apis.map.qq.com/ws/geocoder/v1/', params);
	 		}
	 		if (res.status != 0) {
	 			params.key = this.tencentkey4;
	 			res = await this.fetch('http://apis.map.qq.com/ws/geocoder/v1/', params);
	 		}
			if (res.status == 0) {
				return res
			}else{
				throw new Error('获取具体位置信息失败');
			}
		}catch(err){
			console.log('geocoder获取定位失败', err);
			throw new Error(err);
		}
	}
	//通过geohash获取精确位置
	async getpois(lat, lng){
		try{