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This article introduces the integration of spring boot and mybatis plus in the project. When writing query methods, lambda is used to represent query data. When actually executing sql, the where condition will be spliced with deleted = 0. Reason: 1. Delete field in global configuration. Default delete value = 1 Undeleted value = 0. The configu ...

Learning content: using annotation development (CRUD) 1. How to use annotations 1.1. Annotation is implemented on the interface 1.2. The interface needs to be bound in the core configuration file 1.3 preparation of test procedures We can use annotations without writing usermapper XML (can be understood as interface implementation class ...

What is mybatis plus It's a MyBatis (opens new window) On the basis of MyBatis, only enhancements are made without changes MyBatis Puls benefits: There is no need to add, delete, modify and query sqlBuilt in code generator, paging plug-in, etcProvide a functional conditional constructor for rapid sql free developmentDo some small and medium- ...

Usage scenario In some business scenarios, after a series of actions such as initialization, restart and shutdown of the Serverlet container, some operations need to be processed, such as loading some data, initializing the cache, registering specific tasks, and so on. At this time, we can use the ApplicationListener provided by Spring to oper ...

Before, some readers asked me if I have any useful BI (Business Intelligence) tools? BI tool is simply a data visualization tool. Today, I recommend an open-source data visualization tool DataEase, which is implemented based on SpringBoot and integrated with Apache Doris + Kettle. It can support second level query of large amount of data. ...

Introduction: Course Overview Reprint (invasion and deletion): https://gitee.com/eson15/springboot_study Course catalogue Introduction: Course OverviewLesson 01: Spring Boot development environment setup and project startupLesson 02: Spring Boot returns Json data and data encapsulationLesson 03: Spring Boot using slf4j for loggingLesson 04: ...

Introduction to MyBatis Building SqlSessionFactory from XML Each MyBatis application is based on an instance of SSF (SqlSessionFactory), which can be obtained through SSF Builder. SSF Builder can build an SSF through XML configuration file or configuration class. It is very convenient to build SSF through XML files. It is recommended to use ...

Automatic login is a very common function in software development. For example, we log in to QQ email: In many websites, we will see similar options when logging in. After all, it is very troublesome to always let users enter their user name and password. The automatic login function is that after the user logs in successfully, if the use ...

Application of service gateway in microservice Foreign service challenges The application system of microservice architecture is very large. The basic components that need to be deployed independently include registration center, configuration center and service bus, Turbine exception aggregation and monitoring disk, call chain tracki ...

1, SpringBoot quick start 1.1 rapid construction idea development tool, jdk1 eight 1.New Project->Spring Initializr 2. Select dependent - > finish 3. Create a controller package and an IndexController class under the package @RestController public class IndexController { @RequestMapping("/hello") public String Hello(){ ...