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1, Object navigation query Previous relationships between customers and contacts were one to many: One to many Scenario: query the customer according to the customer id, and find out all contacts of the customer @Test public void selectTest(){ SessionFactory sessionFactory = null; Session session = null; Transacti ...

Today, when I was playing Weibo, I accidentally thought of using python to crawl and download a few pictures. However, it is found that Weibo is different from ordinary websites, To get a little content, you need to get a cookie from the browser first. Otherwise, it can't jump automatically. At present, I haven't found a good solution, so I fo ...

Preface In the design of test cases, we generally require that there is no order. Use cases can disrupt the execution, so as to achieve the test effect When some students write use cases, they write the order of use cases. After the order, there will be new problems (for example, the data returned from the previous use case is used as the para ...

Blog address changed before, republish! In traditional website development, we usually use technologies such as asp, php and jsp to develop. After the development is completed, we will deploy them on the server. When we visit, we will send them with '. asp', '. php' in the browser, For url requests with suffix paths such as'. jsp ', the server ...

Introduction: Flask is based on python and relies on jinjia2 and werkzeug WSGI services as a micro framework Werkzeug is essentially a Socket server, which is used to receive http requests and preprocess them, then trigger the Flask framework, Developers process the request based on the functions provided by the Flask framework and return it to ...

System Library _03_stats Library for 09_ProxySQL Configuration Note: Subsequent official updates to github were not written between 201904 and 201905~~Statistics] Stats library [The stats database] This database contains indicators for data collection of ProxySQL's internal capabilities.Here, you'll find information about how often certain cou ...

11.5 song Leaderboard The song leaderboard is accessed through the navigation link on the home page and displayed in descending order according to the number of songs played. From the design diagram of the leaderboard page, we can see that the web page has three functions: search at the top of the web page, song classification and filtering, a ...

Introduction to L1 cache In the process of application running, it is possible for us to execute multiple SQL queries with the same query conditions in a database session. MyBatis provides the scenario of optimizing the first level cache. If the SQL statements are the same, the first level cache will be hit first, so as to avoid directly queryi ...

When doing interface automation test, we always encounter interface script failure due to connection timeout and other errors. Official method: max_retries=5 error retries 5 timesNote that this is only for DNS, connection error retry. from requests.adapters import HTTPAdapter s = requests.Session() s.mount('http://',HTTPAdapter( ...

In the communication scenario, the common mode is that the client sends the request to the server, and the server responds again. Another communication mode is that the server actively pushes messages to the client. There are usually two scenarios for this communication. Scenario 1 A client sends instructions to the server and triggers the serv ...