Simply use the spring MVC framework to implement operations similar to traditional servlets (annotation Development)
Spring MVC can be developed using annotations or configuration files, but it is still troublesome to use configuration files. Here is only a case of Servlet control output. IDEA uses the spring MVC framework to implement simple Servlet operations (configuration file version)https://blog.csdn.neUTF-8...
Posted by Funbruk on Wed, 22 Sep 2021 18:38:32 +0530
Mybatis core class SqlSessionFactory, I understand after reading it
In the last article< Mybatis source code analysis 2 - instance building >In, coke gave everyone a hand roll on how to add, delete, modify and query a table in the database through Mybatis. So far, the prelude of Mybatis has been played. Next, we will enter the climax. Please move the small bencUTF-8...
Posted by anne on Fri, 24 Sep 2021 05:11:50 +0530
MyBatis: delayed loading, caching, annotation application
MyBatis load policy What is deferred loading? In the actual development process, it is not always necessary to load the user's order information when loading the user's information. This is what we call delayed loading. In one to many, when there is a user, it has 100 orders; When querying userUTF-8...
Posted by lizzyd on Fri, 24 Sep 2021 15:12:18 +0530
MyBatis learning 9 introduction case complex query
1, Mapping entity classes in the Orders class (one-to-one mapping) 1. Add a user object in the Orders class under the POJO class as an attribute of the Orders package com.pp.pojo; import java.util.Date; public class Orders { private Integer id; private Integer userid; private String number; priUTF-8...
Posted by johnb352 on Fri, 24 Sep 2021 19:39:29 +0530
From getting started to mastering the use of Mybatis framework -- configuration analysis of Mybatis
Official documentation for Mybatis3 configuration(Configuration) properties(Properties) settings(Settings) typeAliases(Type alias) typeHandlers(Type (processor) objectFactory(Object factory) plugins(Plug in) environments(Environment configuration) environment(Environment variables) transactionUTF-8...
Posted by NoMansLand on Sat, 25 Sep 2021 23:49:33 +0530
Mybatis05 - one to many and many to one processing
10. Many to one processing Many to one understanding: -Multiple students correspond to one teacher -For students, it is a many to one phenomenon, that is, a teacher is associated with students! Database design CREATE TABLE `teacher` ( `id` INT(10) NOT NULL, `name` VARCHAR(30) DEFAULT NULL, PRIMUTF-8...
Posted by kaoskorruption on Mon, 27 Sep 2021 10:27:47 +0530
Picture upload of SpringMvc learning 5
Problem introduction Here, we continue to use the previous case. Because we want to upload pictures, we still need to modify the editItem.jsp page. We need to jump from itemList.jsp to our editing page editItem.jsp. So we need roughly two steps. The first step is to analyze the itemList.jsp pagUTF-8...
Posted by vishi83 on Tue, 28 Sep 2021 05:23:35 +0530
Java database programming -- mybatis-2021.09.01
1. Getting started with mybatis 1.1 general MyBatis is an excellent persistence layer framework. It encapsulates the process of jdbc operating the database, so that developers only need to pay attention to SQL itself, and do not need to spend energy dealing with complex process codes such as reUTF-8...
Posted by Megahertza on Tue, 28 Sep 2021 08:48:25 +0530
Mybatis actual combat: one to many relationship
One background 1.1 examples The company has several employees. At this time, the relationship between the company and its employees belongs to a one to many relationship. Based on the above information, we can create two tables: company information and employee information. The company table fUTF-8...
Posted by gushy on Fri, 01 Oct 2021 02:37:02 +0530
SpringBoot Beginner to Proficiency Series 5: Accessing SQL databases Mybatis and MyBatis-plus
I. Integrating MyBatis SpringBoot integrates Mybatis related blogs: Springboot integrates Mybatis framework MyBatis only needs to define the Mapper interface, and MyBatis can dynamically generate implementation classes for Mapper, which are equivalent to DAO components. When MyBatis integratesUTF-8...
Posted by joshuamd3 on Fri, 01 Oct 2021 21:32:16 +0530