requests文件_json、异常、代理、其它功能

　　requests文件_json:

#coding:utf-8
import requests
import json
#url="http://httpbin.org/post"     #data     textfile
newurl="http://pythonscraping.com/pages/processing2.php" #任意文件。-文件名根据php接口
data={"hello":"world"}
textfile={"file":open("test.txt","r")}
zipfile={"uploadFile":open("1.rar","rb")}
#r1=requests.post(url,data=data)
#print r1.text
print("--------------------------------------")
r2=requests.post(newurl,files=zipfile)
print(r2.text)

request异常：

import requests
try:
    url="http://www.google.com/"
    response=requests.get(url,timeout=5)
    print(response.status_code)
    print(response.text)
except requests.exceptions.ConnectionError as e:
    print(e) #查看错误信息
print("over")

　　requests代理：

import requests
proxies={"http":"http://10.36.132.56:808",
         "https":"http://10.36.132.56:808"}
#{"http":"用户名:密码@10.36.132.41:808"})
print(requests.get("http://www.baidu.com",proxies=proxies).text)

　　requests其它功能：

'''
import requests
import chardet
r=requests.get("http://www.baidu.com")
print(chardet.detect(r.content))   #查看编码
r.encoding=chardet.detect(r.content)['encoding']  #检测网页的编码
print(r.text)
print(r.history)
print(r.url)
'''
import requests
user_agent = 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)'  #模拟一个计算机
headers={'User-Agent':user_agent}  #代理
r=requests.get("http://www.baidu.cn",headers=headers)
print(r.headers)
print(r.headers["Server"])