How to correctly understand the HTTP protocol status code and application scenarios requires specific code examples
Introduction:
HTTP (Hypertext Transfer Protocol) is a protocol for transmitting hypertext Text application layer protocol. During HTTP communication, the server will return different status codes to indicate the processing results of the current request. It is very important for developers to know and correctly understand these status codes because they can provide useful information to help us process the returned results.
1. Classification of HTTP protocol status codes:
HTTP status codes consist of three digits and are divided into five categories, namely:
2. Common HTTP status codes and their meanings:
import requests response = requests.get('http://www.example.com') status_code = response.status_code print(status_code) # 输出 200
import requests response = requests.get('http://www.example.com') status_code = response.status_code if status_code == 301: new_url = response.headers['Location'] print('资源已移动到:', new_url)
import requests response = requests.get('http://www.example.com/not_exist') status_code = response.status_code if status_code == 404: print('请求的资源不存在')
import requests response = requests.get('http://www.example.com') status_code = response.status_code if status_code == 500: print('服务器发生内部错误')
3. Application scenarios of HTTP status codes:
Conclusion:
HTTP protocol status code is very important for understanding and processing the return result of the request. Mastering common status codes and their meanings can help us better handle request results and implement corresponding processing logic according to specific scenarios. This can improve our development efficiency and user experience.
Note: The above example code is for reference only. The specific implementation method and framework may be different. Developers need to adjust and expand according to their actual situation.
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