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reference resources: MyBatis-Plus 1, Quick start 1.0 preparation reference resources MyBatis-Plus Create table statement in! 1.1 add dependency & profile During springboot consolidation: <!-- springboot Unit test dependencies for --> <dependency> <groupId>org.springframework.boot</groupId> ...

This paper aims to describe the Framework of the Framework, mainly to record my learning about android framework for a period of time, hoping to attract jade and help readers.prefaceWrite before: 1. Is it necessary to learn linux kernel? I think it is necessary. Learning linux kernel helps us to deepen our understanding of some concepts, such ...

The code was written in the last class. Unfortunately, we found that it crash ed when we clicked, because CHANGE_COMPONENT_ENABLED_STATE permission requires system permission 2021-12-17 23:09:15.078 4198-4198/com.android.things.privateapplication1 E/AndroidRuntime: FATAL EXCEPTION: main Process: com.android.things.privateapplication1, PID: ...

Connecting Spring (1) Connecting Spring (2) 1, Integrate MyBatis The integration process is equivalent to transferring some contents written in the MyBatis configuration file to the Spring configuration file. Instead of creating objects through code, various MyBatis classes use the < bean > tag to create beans. Change the SqlSession ...

catalogue 1, Building a RabbitMQ cluster 1. Start multiple RabbitMQ nodes 2. Join the cluster 3. Configure the image queue 2, HAProxy load balancing 1. Install HAProxy 2. Configure HAProxy 3. Start 3, KeepAlived configuration High Availability 1. KeepAlived installation 2. KeepAlived configuration Use Docker to build a RabbitMQ clu ...

Android -- Analysis of NUD detection mechanism of WiFi During this period, I encountered the problem of sudden disconnection after several WiFi connections. Finally, it was found that it was caused by Android's NUD detection mechanism. The underlying implementation of NUD(Neighbor Unreachable Detection) still relies on the kernel. The Android ...

Stick wrap and half wrap sliding window In order to improve the efficiency of TCP transmission, the transmitter and receiver will maintain an array of dynamic storage and maintain a certain number of TCP connections. Phenomenon analysis Sticky bag Phenomenon: send abc def and receive abcdef reason: Application layer: the receiv ...

( • ̀ ω •́ ) ✧ spring security intermediate 1, Expression based access control ⭐ access() can be used to realize the same functions as the permission control learned before.. antMatchers.access("expression or method") has a wide range of expressions, such as:. anyRequest.access(@ class name. Method): determine whe ...

Initialization of Spring Surprisingly, Spring is no stranger to the core framework in Java, a point that interviewers often ask, and the source code is also the most beautiful framework. The core is IOC and AOP. IOC is simply a container that manages everything together. AOP is dynamic and adds some enhancements when you execute the methods in ...

Course Q & A and new course information: QQ communication group: 422901085 for course discussion Video link of FrameWork introductory course: https://edu.csdn.net/course/detail/30298 Video link of FrameWork practical lesson 1: https://edu.csdn.net/course/detail/30275 FrameWork cross process communication video link: https://edu.csdn.net/cou ...