接口请求格式为：

1. 固定url
2. key：requestJson
   value：{"head ":{固定参数及值},"body":{需要的参数和值}}
   例子：

{
    "head":{
        "service":"front.a.query",
        "version":"1.0",
        "input_charset":"UTF-8",
        "core_merchant_no":"EW_N2012672000",
        "sign":"dc1337a0c5b6c703a14005a1d30eab8c"
    },
    "body":{
        "channel_type":"WX",
        "out_request_no":"otn20201106173104635106",
        "merchant_no":"EW_N4061492000"
    }
}

import requests
from a.utils.md5_python import md5Python as md5
from a.utils.date_random import get_random_param as get_unique
from a.log.logger import Logger
from a.utils.tools import dict_process
from a.utils.get_excle_path import get_excle_path
from a.utils.get_excle_data import get_all_excle_data
from a.utils.tools import del_null
import json

def front_a_query(excle_file,sheet_name,row):
    # 获取接口的数据
    excle_data = get_all_excle_data(excle_file, sheet_name, row)
    host = excle_data['host']
    params = excle_data['params']
    outTradeNo = get_unique('otn')

    head = {
            "service": "front.a.query",
            "version": "1.0",
            "input_charset": "UTF-8",
            "core_merchant_no": params['core_merchant_no']
        }

    body = {
            "channel_type": "WX",
            "out_request_no": outTradeNo,
            "merchant_no": params['merchant_no']
        }
   # 非必填的参数没有值，请求信息就去掉
    body = del_null(body)

    requestJson = {
        "head": head,
        "body": body
    }

    # 加密串的值
    sign_values = dict_process(requestJson)

    # 将按规则生成的sign放在请求的head里面
    requestJson["head"]['sign'] = md5.md5_sign_pc(sign_values, params['key'])

    # 请求信息为json格式
    params = {
        "requestJson": json.dumps(requestJson)
    }

    # 接口请求
    r = requests.post(host, data=params)

    # 返回接口的请求和返回信息
    result = {
        'req': requestJson,
        'res': r.json(),
        'url': host
    }
    return result

if __name__ == '__main__':
    log = Logger("info")
    excle_file = get_excle_path()
    sheet_name = 'front'
    row = 1

    result = front_a_query(excle_file,sheet_name,row)
    log.info("请求地址：" + result['url'])
    log.info("请求信息：" + str(json.dumps(result['req'], ensure_ascii=False)))
    log.info("返回信息：" + str(json.dumps(result['res'], ensure_ascii=False)))
    print("商户配置信息：" + str(result['res']['body']['wx_configure_info']))