Python 3 requests module usage example
Requests automatically send HTTP/1.1 requests through urlib3. It can easily implement cookies, login verification, proxy settings and other operations.
Python's built-in urllib module is used to access network resources. However, it is troublesome to use and lacks many practical advanced functions.
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Posted by Cerebral Cow on Wed, 29 Jan 2020 01:30:35 -0800
The AOP operation of Spring's aspectj
AOP concepts
1 aop: Aspect oriented programming, extensions do not modify the source code implementation.
2 aop takes the horizontal extraction mechanism instead of the traditional vertical inheritance system duplicate code.
3 aop underlying implementation using dynamic proxy
(1) In t ...
Posted by fiddlehead_cons on Tue, 28 Jan 2020 17:45:25 -0800
Spring AOP-01 pre enhanced MethodBeforeAdvice
1. Classes to enhance
package com.test.springadvicetype;
import org.springframework.stereotype.Component;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* Attendants
*/
@Component
public class Waiter {
/**
* service
* @param name
*/
public String serve(String name) {
System.ou ...
Posted by Emperio on Tue, 28 Jan 2020 07:50:07 -0800
Android development case 2 - start and stop service in standard binding mode, and complete addition calculation
Android development case 2 - start and stop the service in the standard binding mode, and complete the addition calculation
Preface
1. services
When the startService() method is used to start the service, the execution life cycle method is onCreate(), onStartCommand(), and then the service is in the running state until the ...
Posted by PJ droopy pants on Mon, 27 Jan 2020 08:04:04 -0800
Python Basics - day 5
10- iteration
What objects in Python support for loops (or traversal)?
Answer: iteratable objects, or objects that implement the iterator protocol, support traversal or looping. (e.g. list, tuple, dictionary, file). The feature is the internal implementation of the \. Example:
f = open('hello.txt', en ...
Posted by Skull on Sun, 26 Jan 2020 21:14:00 -0800
python crawler - crawl cat-eye movie top100 using requests Library
Use the requests library to capture the contents of the cat-eye movie TOPl100.
Target site: https://maoyan.com/board/4
1. Grab Home Page
Define the get_one_page method and pass it a url parameterNote: Cat Eye Movie website has anti-crawling measures, you can crawl after setting headers
import reque ...
Posted by TylerL on Sun, 26 Jan 2020 20:10:10 -0800
Crawler learning (used by requests Library)
requests Library
Although the urlib module in Python's standard library already contains most of the functions we usually use, its API is not very good, and Requests is advertised as "HTTP for Humans", indicating that it is more concise and convenient to use.
Installation and documentation address:
pip is very convenient to install:
p ...
Posted by habuchas on Sun, 26 Jan 2020 03:44:04 -0800
Define custom properties
I need to implement my own properties, such as com.android.R.attr
Nothing was found in the official documentation, so I need information on how to define these properties and how to use them from my code.
#1st floor
Qberticus has a good answer, but lacks a useful detail.If you want to implement these in the library, replace:
xmlns:w ...
Posted by Stevan on Sat, 25 Jan 2020 20:50:19 -0800
Spring Road (12) -- assembling bean s in annotation configuration
background
The last one talked about how to assemble bean in the xml configuration. In fact, the principle of bean in the annotation configuration is exactly the same as that in xml, and the effect is the same, but it adopts different ways.
Therefore, we do not change the examples in this article, but ...
Posted by esport on Fri, 24 Jan 2020 02:18:11 -0800
Web Foundation - Servlet&HTTP&Request
Article Directory
Servlet:
HTTP:
Request:
Case: User Login
Servlet:
1. Concepts
2. Steps
3. Principle of execution
4. Life cycle
5. Servlet3.0 Annotation Configuration
6. Architecture of Servlet
Servlet--Interface
|
GenericServlet -- Abstract Class
|
HttpServlet -- Abstract Class ...
Posted by Gordonator on Wed, 22 Jan 2020 19:12:20 -0800