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Let's start with the idea: read a configuration file in the form of a stream, parse and encapsulate the information in the stream into a MAP1 < string, BeanDefinition >. BeanDefinition contains the attribute information of the configuration file, build a factory, store the built bean object into another MAP2 < string, Object > by re ...

Basic concepts of databases Data: Symbolic records describing things are called data. Include numbers, text, graphics, images, sounds, file records, etc. Store in a uniform format as a "record". Table: A table is formed by grouping different records together Is used to store specific data Database: A database is a collection of ...

1. Loop through all drop-down list values2. Radio drop-down list3. Selection and cancellation of multi selection list4. Operate the radio box, multi box, assert and select all5. Assert keywords in page source code6. screenshots7. Drag page elements 1. Loop through all drop-down list values <!--Practicing html--> //Education back ...

Filter is mainly used in pictures to achieve some special effects. (although they can also be used in video), we only discuss the use of pictures. -Webkit filter is an attribute of css3. Webkit takes the lead in supporting these functions. It feels that the effect is very good. Let's learn about the filter property. Now the ef ...

In this article Deep source learning Vue responsive principle This article explains how Vue informs the data that depends on it to update when the data changes. The point of this article is: the view knows the change of the dependent data, but how to update the view. Vnode Tree There is a DOM tree corresponding to it in real HTML, and a similar ...

Distributed symmetric gateway spine configuration bgp evpn configuration router bgp 7677 bgp router-id 192.168.59.130 bgp bestpath as-path multipath-relax neighbor fabric peer-group neighbor fabric remote-as external neighbor 192.168.59.128 peer-group fabric neighbor 192.168.59.129 peer-group fabric ! address-family l2vpn evpn neighb ...

Foreword (must see here!!) I'm sure you know the process of thread pool execution, but how do you configure thread size, how do you really use it, and how do you configure it reasonably with quantified metrics?This article will analyze the implementation of thread pools from the source code point of view and show how thread pools are quantified ...

Catalog Introduction to MyBatis interceptor Use of interceptors Introduction and configuration of interceptor Source code analysis summary Reprinted from Research on the principle of MyBatis interceptor Introduction to MyBatis interceptor MyBatis provides a plug-in function. Alt ...

1. Pseudo array arguments Arguments represent arguments. One particular thing is that arguments are only used in functions. 1.1 number of return parameters Return the number of function arguments: arguments.length Example: fn(2,4); fn(2,4,6); fn(2,4,6,8); function fn(a,b,c) { console.log(arguments); console.log(fn.length); //G ...

FreeSql has been open source for nearly a year, and is determined to become a convenient and easy-to-use ORM for. Net platform. Warehouse address: https://github.com/2881099/FreeSql With the continuous iterative updating, it becomes more and more stable and powerful. It is expected to release the official version of 1.0 on the first anniversary ...