Programmer Group

Links to the original text: https://blog.csdn.net/peterwanghao/article/details/40071857 Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetCo ...

I. JPA 1. Creating projects 2. Importing Thymeleaf dependencies in pom.xml files <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ...

Mybatis Multiple Data Sources Read-Write Separation (Annotation Implementation) First, we need to build two libraries for testing. I use master_test and slave_test libraries here. Both libraries have the same table (lazy, happy), table structure. Table name t_user | Field Name | Type | Note| | :------: | :------: | :------: || id | int | Prima ...

Step 1: Add Jar to the Pom.xml file <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.10</version> </dependency> <dependency> <groupId& ...

What is it? One kind of database connection pool, manages and releases the connection of database, realizes the reuse of connection, and can compare thread pool. Parameter configuration What can we do? 1, Connection Pool 2, Monitoring 3, Encryption 4, Extending JDBC How do you use it? Adding ...

Druid is provided by the C3P0, and the specific operation steps are very similar to those of the C. We will copy the downloaded Druid directly into the IDEA tool Druid's configuration file is in the form of properties. Its configuration file can be called any name and can be placed in any directory. It ...

Introduction to Druid Druid is a very good database connection pool. In terms of function, performance and extensibility, it surpasses other database connection pools, including DBCP, C3P0, BoneCP, Proxool and JBoss Data Source. Druid has deployed more than 600 applications in Alibaba, after more than a year of rigorous deployment of large-scal ...

Introduction to 1 dynamic-datasource This framework only does the core thing of switching data sources and does not restrict your specific operations. Highly recommended in master-slave mode Follow the general rules so that others can understand your code more easily. The primary database recommends ...

Introduction to Druid Druid is a project on Alibaba Open Source Platform. The whole project is composed of database connection pool, plug-in framework and SQL parser. The main purpose of this project is to extend some limitations of JDBC and enable programmers to achieve some special requirements, such as requesting credentials from key servic ...

Preface Integrating Mybtis is very simple for Spring Boot. Through this article, you can get started quickly without pressure, but before I start, I want to talk about my version information: maven 3.2.5 jdk 1.8 Spring Boot 2.1.6 Create a project The automated configuration of idea is still used, but here we need to check the following depen ...