MyBatis integrates dual data sources

Sometimes in a project, there are situations where you need to connect two databases. This article will talk about how to use dual data sources (or multiple data sources) in combination with Spring and Mybatis. Background introduction The key to implementing multiple data sources in this article is the AbstractRoutingDataSource provided by Spri ...

Posted on Thu, 04 Jun 2020 11:09:39 -0700 by smallflower

MyBatis: Reverse Engineering

catalog 1, What is reverse engineering? 2, Characteristics of MyBatis reverse engineering 1. Advantages of MyBatis reverse engineering 2. Disadvantages of MyBatis reverse engineering 3, MyBatis reverse engineering construction 1. Add dependency pom.xml 2. Create MBG profile generatorConfig.xml 3. ...

Posted on Thu, 04 Jun 2020 06:45:24 -0700 by millsy007

Mybatis Powerful Result Set Mapper resultMap

1. Preface The resultMap element is the most important and powerful element in MyBatis.It frees you from 90% of JDBC ResultSets data extraction code and allows you to perform operations that JDBC does not support in some cases.In fact, when writing mapping code for complex statements such as connections, a resultMap can replace thousands of l ...

Posted on Sat, 23 May 2020 17:54:21 -0700 by Julian Pedley

Beauty of Mybatis source code: 1.2 download Mybatis source code and import it into IDE tool

Download Mybatis source code and import it into IDE tool Download the source code of Mybatis Open the browser and enter the web address https://github.com/mybatis/mybatis-3 You can access Mybatis' warehouse in Github. So far, the latest version of mybatis is 3.5.3-SNAPSHOT, but because the version I used in my previous learning process is 3.5 ...

Posted on Wed, 20 May 2020 23:18:46 -0700 by ninib

Spring Cloud cognitive learning: introduction to Spring Cloud and use of Eureka

catalog Introduction to Spring Cloud Introduction to microservices Reasons for Spring Cloud: Common scenarios: Advantages and disadvantages of microservices: Spring Cloud version problems Version introduction Corresponding relationship with Spring Boot version ---Split line - premise of learning - split line--- Basic project constructi ...

Posted on Thu, 14 May 2020 08:21:46 -0700 by misteryoji

Mybatis - Generator tutorial

abstract Mybatis generator can help us automatically generate a lot of structured code, such as Entity, Mapper interface and Xml file corresponding to each table, which can save a lot of tedious work. preparation 1. Add plug-in dependency in pom file: <!-- mybatis generator Auto generate code plug-in --> <plugin> <groupId&gt ...

Posted on Mon, 11 May 2020 09:40:55 -0700 by robinjohn

mybatis Table 1 multi query

When writing mysql statement with mybatis, we encountered the problem of 1-to-many relationship First look at the relationship: Based on table A, A record in table A corresponds to A record in table B, while A record in table A corresponds to n records in table C. then table B and table C are 1-to-1. The query statement at this time is: &lt ...

Posted on Mon, 04 May 2020 08:17:15 -0700 by kneifelspy

Mybatis generator reverse engineering setting does not generate Example class

Every time po and mapper are generated before, the Example class and its corresponding CURD method are generated. It's also troublesome to delete, so just let it not be generated. The specific configuration is very simple. You only need to turn off the generated method in the table tag of the table to be set. The code is as follows. &lt ...

Posted on Fri, 01 May 2020 06:36:12 -0700 by micmania1

MyBatis uses reverse engineering to automatically generate the entity layer and dao layer of the project

1, Foreword I wrote an article about MyBatis Click the link to enter the basic CRUD of low version comparison However, it is not necessary to write dao layer and entity layer code in actual development, mainly using the shelf package provided by MyBatis Here is the whole process of using reverse engineering 2, Demo and code ① Create a ja ...

Posted on Fri, 01 May 2020 00:14:19 -0700 by geetakhurana

Database access of Spring Boot

1, Background Spring boot is a service development framework that integrates service publishing, database management and log management. It is also an all-around helper for microservice development. This chapter describes how to use spring boot to access MySQL database. 2, Build basic environment 1. Install Maven (a lot of guidance docume ...

Posted on Thu, 30 Apr 2020 20:09:29 -0700 by johnh