Flask获取post，get参数，以及 爬虫 requests的get,post参数详解

1.Flask-----get

@app.route('/get',methods=["get"])
def get():
    print(f"request.args{request.args}")
    return 'GET!'

2.Flask-----post

@app.route('/post',methods=["post"])
def post():
    print(f"request.form{request.form}")
    print(f"request.get_data{request.get_data()}")
    print(f"request.get_json{request.get_json()}")
    print(f"request.files{request.files}")
    return 'POST!'

3.爬虫之get方法参数详解

import requests,json
url_get = "http://127.0.0.1:5000/get"
pm = {"name":"my name is Get"}
res = requests.get(url_get,params=pm)
print(res.text)
'''
1.params = 字典
request.argsImmutableMultiDict([('name', 'my name is Get')])
'''

4.爬虫之post方法参数详解

import requests,json
url_post = "http://127.0.0.1:5000/post"
data_data = {"name":"my name is POST_data"}
data_json = {"name":"my name is POST_json"}
res = requests.post(url_post,data=json.dumps(data_data),json=data_json)
print(res.text)
"""
有data,那么json就不生效
1.json=data_json
request.get_data   b'{"name": "my name is POST_json"}'
request.get_json   {'name': 'my name is POST_json'}
2.json=json.dumps(data_json)
request.get_datab'"{\\"name\\": \\"my name is POST_json\\"}"'
request.get_json{"name": "my name is POST_json"}
3.data=data_data
request.form    ImmutableMultiDict([('name', 'my name is POST_data')])
4.data=json.dumps(data_data)
request.get_data b'{"name": "my name is POST_data"}'
"""

 5.爬虫之传参文件：

res = requests.post(url, files={"key": open(file_url, "rb")})

 

6.我说一个很重要的问题，就是java与python之间接口 交互post请求传参 json的时候一定要在 headers里面加上类型是json才可以（Java很恶心）   'Content-Type': 'application/json',   不服来战 我就觉得恶心，请求其他程序的api也没那么多事

    response_data = {
        "code": 200,
        "data": return_data,
        "msg": "success",
        "status": "200"
    }
    print(f"response_data:\n{response_data}")
    headers = {
        'Accept-Encoding': 'gzip, deflate, sdch',
        'Accept-Language': 'en-US,en;q=0.8',
        'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36',
        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
        'Referer': 'http://www.baidu.com/',
        'Connection': 'keep-alive',
        'Content-Type': 'application/json',
    }
    json_response_data = json.dumps((response_data))
    print(f"回调的数据：\n{json_response_data}")
    res = requests.post(notify, data=json_response_data,headers=headers)