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requests使用介绍

时间:2020-05-20 18:33:59      阅读:49      评论:0      收藏:0      [点我收藏+]

标签:重定向   host   als   ret   示例   min   php   oda   ide   

1、requests模块常用方法

    1、requests.request( ) 构造请求,是各方法的基础方法

    2、requests.get() 发送get请求

    3、requests.post() 发送post请求

    4、requests.head() 发送head请求

    上述各方法的基本使用个常用参数基本一致

 

2、GET请求

一、基本请求
response = requests.get("http://www.baidu.com/")
返回response常用的基本属性有:
1、response.status_code  http状态码
2、response.text   HTTP响应内容的字符串形式,即,url对应的页面内容
3、response.content   HTTP响应内容的二进制形式
4、response.cookies.get_dict() 获取cookie
5、response.encoding  从HTTP header中猜测的响应内容编码方式
6、response.apparent_encoding 从内容分析出的响应内容编码方式(备选编码方式)
二、定义 headers头
headers = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36"}
response = requests.get("http://www.baidu.com/", headers = headers)
三、传递url参数
可以使用params 关键字参数,以一个字符串字典来提供这些参数
# params 接收一个字典或者字符串的查询参数,字典类型自动转换为url编码,不需要urlencode()
payload = {key1: value1, key2: [value2, value3]}
response = requests.get("http://www.baidu.com/", headers = headers, params=payload)
四、带cookie请求
response = requests.get("http://www.baidu.com/", cookies=cookie_dict)

3、POST

post基本使用和get差不多
post传递参数时用data 注意: data: 在请求体里传递的数据 params: 在URL中传递的参数,一般用于get请求 简单示例 res
=requests.request( method=POST, url= http://www.baidu.com, params = {k1:v1,k2:v2}, data = {use:alex,pwd: 123,x:[11,2,3]} ) print(res.url)#http://www.baidu.com/?k1=v1&k2=v2 可以看到params参数拼接到url中了

4、各种参数使用

1、params:字典或字节序列,作为参数增加到url中 一般用于get请求
res=requests.request( method=get,
                    url= http://www.baidu.com,
                    params = {k1:v1,k2:v2},
                )
print(res.url) #http://www.baidu.com/?k1=v1&k2=v2

2、data:字典、字节序列或文件对象,作为Request的对象
3、headers:字典,HTTP定制头
res=requests.request( method=get,
                    url= http://www.baidu.com,
                    headers = {"User-Agent":"chrome"}
                )

4、cookies:字典或CookieJar,Request中的cookie
5、timeout:设定超时时间,秒为单位
6、proxies:字典类型,设置访问代理服务器,可以增加登录认证
7、allow_redirects:True/False,默认为Ture,重定向开关
8、stream:True/False,默认为True,获取内容立即下载开关,会立即开始下载文件并存放到内存当中,倘若文件过大就会导致内存不足的情况.
9、verigy:True/False,默认为True,认证SSL证书开关
10、cert:本地SSL证书路径

注意:

   当stream参数设置成True时,它不会立即开始下载,当你使用iter_content或iter_lines遍历内容或访问内容属性时才开始下载。需要注意一点:文件没有下载之前,它也需要保持连接。

  • iter_content:一块一块的遍历要下载的内容
  • iter_lines:一行一行的遍历要下载的内容

 

r1 = requests.get(http://dig.chouti.com/)
r1_cookies = r1.cookies.get_dict()
r2 = requests.post(
    url="http://dig.chouti.com/login",
    headers = {"User-Agent":"chrome"},
    params = {k1:v1,k2:v2},
    data={use:alex,pwd: 123,x:[11,2,3]},
    cookies=r1_cookies,
    timeout=10,
    proxies={"http": "http://12.34.56.79:9527","https": "http://12.34.56.79:9527"},
    allow_redirects=False


)

 

 

 

 

5、各种示例

技术图片
#!/usr/bin/python3
# -*- coding: UTF-8 -*-

import requests
import json
import datetime, time
import os,stat
import urllib
import http.cookiejar


class Zabbix:
    def __init__(self, url,gr_url,login_url,header, username, password):
        self.url = url
        self.gr_url = gr_url
        self.login_url = login_url
        self.header = header
        self.username = username
        self.password = password

    def getToken(self):
        # 获取Token并返回字符Token字符串

        data = {"jsonrpc": "2.0",
                "method": "user.login",
                "params": {
                    "user": self.username,
                    "password": self.password
                },
                "id": 1,
                "auth": None
                }
        token = requests.post(url=self.url, headers=self.header, data=json.dumps(data))
        return json.loads(token.content)["result"]

    #获取所有主机组id
    def getHostgroup(self):
        data = {"jsonrpc": "2.0",
                "method": "hostgroup.get",
                "params": {
                    "output": ["groupid", "name"],
                },
                "id": 1,
                "auth": self.getToken()
                }
        group = requests.post(url=self.url, headers=self.header, data=json.dumps(data))
        #print(json.loads(group.content)["result"])
        return json.loads(group.content)["result"]

     #取单个主机组下所有的主机ID
    def getHostid(self,gid):
        data = {"jsonrpc": "2.0",
                "method": "host.get",
                "params": {
                    "output":["hostid","name"],
                    "groupids": gid,
                },
                "id": 1,
                "auth": self.getToken()
                }
        ids = requests.post(url=self.url, headers=self.header, data=json.dumps(data))
        return json.loads(ids.content)["result"]

    #根据ip获取主机id
    def gethostid(self,ip):
        data = {
            "jsonrpc": "2.0",
            "method": "host.get",
            "params": {
                "output": ["hostid","name"], #"extend"
                "filter": {
                    "host": ip
                }
            },
            "auth": self.getToken(),
            "id": 1
                }
        hostid = requests.post(url=self.url, headers=self.header, data=json.dumps(data))
        return json.loads(hostid.content)[result]
        


    #根据hostid获取graphid
    def getgraphid(self,hostid):
        data = {
            "jsonrpc": "2.0",
            "method": "graph.get",
            "params": {
                "output": "name",
                "hostids": hostid,
                "sortfield": "name",
                "filter": {
                    "name": [调度次数,平均调度时间]
                }
            },
            "auth": self.getToken(),
            "id": 1
        }
        graps = requests.post(url=self.url, headers=self.header, data=json.dumps(data))
        return json.loads(graps.content)["result"]

    #下载保存图片
    def get_graph(self,starttime,dirs,graphid,graphname):
        if os.path.exists(dirs):
            pass
        else:
            os.makedirs(dirs)
            os.chmod(dirs,stat.S_IRWXO+stat.S_IRWXG+stat.S_IRWXU)

        """
        #使用urllib时会出现http.client.IncompleteRead: IncompleteRead(11891 bytes read)的报错
        login_data = urllib.parse.urlencode({
            "name": self.username,
            "password": self.password,
            "autologin": 1,
            "enter": "Sign in"}).encode(encoding=‘UTF8‘)

        graph_args = urllib.parse.urlencode({
            "graphid": graphid,
            "width": ‘1200‘,
            "height": ‘156‘,
            "stime": starttime,  # 图形开始时间
            "period": ‘86400‘}).encode(encoding=‘UTF8‘)
        cj = http.cookiejar.CookieJar()  # 设置一个cookie处理器, 它负责从服务器下载cookie到本地,并且在发送请求时带上本地的cookie
        opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj))
        urllib.request.install_opener(opener)
        opener.open(login_url, login_data).read()
        data = opener.open(gr_url, graph_args).read()
        """

        #通过requests发送请求
        login_data = {
            "name": self.username,
            "password": self.password,
            "autologin": 1,
            "enter": "Sign in"}

        #urlencode后graph_args为graphid=579034&width=599&height=100&stime=1589445134&period=86400
        graph_args = urllib.parse.urlencode({
            "graphid": graphid,
            "width": 599,
            "height": 100,
            #"stime": starttime,  # 图形开始时间 zabbix3.0
            #"period": ‘86400‘ #zabbix3.0
            #zabbix4.0使用下面方式获取某时间段图形
            "from": now-24h, #2020-05-13 09:00:00
            "to": now,#2020-05-13 10:00:00
            "profileIdx":web.screens.filter
             })

        #登录获取cookie
        login_response = requests.post(
            url = login_url,
            data = login_data
        )
        cookie_dict = login_response.cookies.get_dict()
        newgr_url = gr_url + ? + graph_args
        """
        pic_response = requests.post(
            url = newgr_url,
            #data = graph_args,
            cookies = cookie_dict,
            stream = True
        )
       """

        pic_response = requests.get(newgr_url,cookies=cookie_dict)
        data = pic_response.content

        with open(r"%s//%s-%s.png" % (dirs,graphname, datetime.datetime.now().strftime(%Y%m%d)), wb) as f:
            f.write(data)




if __name__ == "__main__":
    url = "http://127.0.0.1:18080/zabbix/api_jsonrpc.php"
    #获取图片url
    gr_url = "http://127.0.0.1:18080/zabbix/chart2.php"
    #登录url
    login_url = http://127.0.0.1:18080/zabbix/index.php
    #header 头
    header = {"Content-Type": "application/json-rpc"}

    #获取当天零点
    #now = datetime.datetime.now()
    #zeroToday = now - datetime.timedelta(hours=now.hour, minutes=now.minute, seconds=now.second,microseconds=now.microsecond)

    # 图形开始时间
    starttime = int(time.mktime((datetime.datetime.now() - datetime.timedelta(days=1)).timetuple()))
    #starttime = int(time.mktime((zeroToday - datetime.timedelta(days=0)).timetuple()))

    #图片保存路径
    dirs = r"/home/migu/yqh/%s" % (datetime.datetime.now().strftime(%Y%m%d))


    test = Zabbix(url=url,gr_url=gr_url,login_url=login_url, header=header, username="xxxx", password="xxxxxx")
    #ziyan_group=test.getHostgroup()[-1]
    #ziyan_host=test.getHostid(ziyan_group[‘groupid‘])

    hostid = test.gethostid(127.0.0.1)
    print(hostid)
    hostid = hostid[0][hostid]
    #print(hostid)
    graps = test.getgraphid(hostid)
    #print(graps)
    for i in graps:
        print(%s的截图 已经成功保存至%20s % (i[name],dirs))
        test.get_graph(starttime,dirs,i[graphid],i[name])
    
zabbix自动截图

 

requests使用介绍

标签:重定向   host   als   ret   示例   min   php   oda   ide   

原文地址:https://www.cnblogs.com/quanloveshui/p/12925053.html

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