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Basic use of Mybatis Learning objectives Meet Mybatis Learn about Mybatis features Know why to learn Mybatis Use Mybatis to write a simple program Learn to use the basic functions of Mybatis Understand the basic configuration of Mybatis 1, Meet Mybatis Official documents 1. Introduction MyBatis was apache An open source project ...

annotation Annotation is a new technology introduced from JDK 5.0effect: 1. It is not the program itself, but the program can be explained (this is no different from the comment) 2. It can be read by other programs (such as compiler, etc.)Format of Annoation: Annotations exist in the code as "@ annotation name". You can also add ...

catalogue 1, Insert class sort 1. Insert sort2. Hill sortComplexity analysis2, Exchange class sorting 3. Bubble sorting4. Quick sortComplexity analysis3, Select sort 5. Simple selection and sorting6. Heap sortingComplexity analysis4, Other internal sorting 7. Merge and sort8. Cardinality sortingComplexity analysisReference article: ...

(1) Introduction Since you read this article, you should know what Google's two-step authentication is for. Here is another link to download the app (apkpure search Google authenticator) Explanation of verification principle: Find the 32-bit random code bound before the login user in the database (the code is generally stored in the datab ...

javaEE SSM framework maven project introduction simple book management - Novice final review #This project is only used for novice reference and entry reference to realize super simple login registration and book search, poor selection, deletion and modification. Please detour, Daniel. The first article is dedicated to java (the regret of the ...

Stream It is used to perform various operations and operations on the data in the collection, such as filtering, sorting, mapping... Finally get the result The collection focuses on the storage of data, and the Stream stream focuses on the operation and operation of the data stored in the collection Use steps Gets the object of a Stream s ...

1. Core function of jQuery: $() 1. The passed in parameter is a function: it means that after the page is loaded, it is equivalent to window ο nl ο ad=function(){} 2. Pass in HTML string: these HTML tag objects will be created 3. Pass in selector string: query label objects according to the selector 4. Pass in DOM object ...

Video display Java Web job -- cake ordering system 1 Purpose and requirements of the experiment Objective: to learn the basic knowledge of Java Web and master the necessary knowledge of servlet and jsp. Cultivate the ability to build practical projects. 2 demand analysis 2.1 problem statement With the popularization and develop ...

Object-oriented is a programming idea, as opposed to process-oriented Both process-oriented and object-oriented are ideas, and object-oriented is relative to process-oriented. Process-oriented, emphasizing functional behavior, with functions as the smallest unit, consider how to do it. Object-oriented encapsulates functionality into objects, e ...

MySQL diff summary: 1. When dealing with the problem, take the object-oriented method to extract the objects existing in the problem or instance. 2. When extracting the object, try to consider it as complete as possible, and separate each feature of the problem into each attribute of the object. 3. Object separation is good, and modeling is ...