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MyBatis learning What is MyBatis? MyBatis is the MyBatis SQL Mapper Framework for Java (sql) Mapping) MyBatis is an excellent persistence layer framework, which supports custom SQL, stored procedures and advanced mapping. MyBatis eliminates almost all JDBC code and the work of setting parameters and obtaining result sets. MyBatis can config ...

There are five ways to obtain database connection:     Method 5 [final version] only this one can be practiced (doge): Put the basic information into a configuration file.   Benefits of mode 5: 1. Realize the separation of data and code, and realize decoupling 2. If you need to modify the configuration file information, you ...

1, What is JDBC Java database connectivity. Essence of JDBC: JDBC is a set of interface s formulated by SUN company. Interfaces have callers and implementers. Interface oriented calling and interface oriented writing implementation classes belong to interface oriented programming. Polymorphic mechanism is very typical: Abstract oriented program ...

Level 1: specify the type of JDBC encapsulation Task description This task: encapsulate a JDBC tool class as required. Relevant knowledge In order to complete this task, you need to master the basic use of JDBC. Please refer to the previous training content Advanced features of Java - JDBC (Part 1). This chapter will encapsulate ...

catalogue 1.C3P0 Preparation before use: Method 1: hard coding (database configuration is written into the code) Method 2: write configuration file and separate code and configuration (development recommendation) 2.DBCP Preparation before use: Method 1: hard coding (database configuration is written into the code) Method 2: write config ...

catalogue 1, DriverManager: drive management object 1. Register driver: tell the program which database driver jar to use 2. Get database connection: 2, Connection: database connection object 1. Get the object executing sql 2. Management services: 3, Statement: object to execute sql 1,boolean execute(String sql) : 2,int executeUpdate( ...

1, Element 1: Driver interface implementation class 1. Introduction to driver interface java.sql.Driver interface is the interface that all JDBC drivers need to implement. This interface is provided for database manufacturers. Different database manufacturers provide different implementationsInstead of directly accessing the classes that impl ...

JDBC is an API for executing sql statements, which enables developers to operate different databases. Let's introduce my study of JDBC. Don't spray when Xiaobai is learning. I General steps for using JDBC  1. Import the jar package. You can download it from the corresponding database official website. Copy the jar package to the director ...

1. Introduction to JDBC 1. What is JDBC? 2.JDBC writing steps 2. How to Get Database Connections Preparations: 1. Create a new lib folder under the project 2. Import the jar package into the lib directory 3. Add the imported jar package to the project through Add as library 4. Create related packages and test classes 5. Create ...

JDBC is the cornerstone of java accessing database. JDO, Hibernate, MyBatis, etc. all encapsulate JDBC. If you only use the persistence layer framework, you don't need to learn JDBC, but from the perspective of the development prospect of programmers, you must master it. The framework will be updated iteratively all the time, but the pri ...