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1, ServletContext class (1) , what is a ServletConfig object ServletContext is an interface ServletContext is a domain object For a web project, Tomcat will only create a ServletContext object. (2) , what is a domain object **Domain object is an object that can be stored like a Map collection (d ...

Recently, I met the use of the drawer menu in my study. Write down a note. First create the layout file as follows: <?xml version="1.0" encoding="utf-8"?> <androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/dl" xmln ...

Configuration center Create several configuration files on git, as shown in the figure above. The file naming rules are {project}-{profile}. For example, the project name corresponding to the config client dev file is config client, and the version is: dev. spring cloud config server pom.xml <de ...

What is Ribbon 　　 Ribbon is a customer service load balancing tool based on HTTP and TCP, which is implemented based on Netflix Ribbon. It is not deployed independently like Spring Cloud service registry, configuration center and API gateway, but it exists in almost every Spring Cloud microservice. Including the declarative service call provi ...

BeanFactoryPostProcessor and BeanPostProcessor are two interfaces that are exposed when initializing beans. They are similar to Aware (PS: for spring hook, please see) Detailed explanation of Spring hook method and hook interface This article also mainly studies the details of the specific hooks, so that we can be efficient in the actual ...

Source code of the project: https://github.com/zhuquanwen/mybatis-learn/releases/tag/with-annotation Construction process: Based on the previous article, some processes are not described in detail. The previous source code has been attached. Please refer to the previous article: https://blog.csdn.net/u0 ...

1. background JSON(JavaScript Object Notation) is a lightweight data exchange format. JSON has many advantages over XML, another data exchange format. For example, the readability is better and the space occupied is less. In the field of web application development, thanks to the good support of JavaScript for JSON, JSON is more popular with de ...

Mybatis source code analysis I (initialization process) Recently, I learned the source part of mybatis. Now I am going to record my understanding process while learning. This article mainly records the initial process of mybatis, mainly including the following points: 1. What did initialization do 2. How to parse the parameters of mybatis-confi ...

A previous article: The difference between dependency lookup and dependency injection , this article talks about dependency lookup and dependency injection as the means to implement IOC. We use more dependency injection in our actual work. How much do you know about the specific patterns and types of ...

WeChat official account / development / basic setup / server configuration page URL fill in your server address The Token value is the value set by response.php The content of the response.php file is as follows: <?php traceHttp(); define("TOKEN", "kiking"); $wechatObj = new wechatCallbacka ...