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This article is and is included in the springboot-guide (not just SpringBoot but also Spring Key Knowledge Points), address: https://github.com/Snailclimb/springboot-guide .Make it easier for you to learn Spring!If you feel good, welcome to a Star! Many times we need to put some commonly used configuration information such as Aliyun oss confi ...

MongoDB pipeline definition The aggregation pipeline of MongoDB will pass the results of MongoDB documents to the next pipeline after one pipeline is processed. Pipeline operations are repeatable. Common Aggregate pipeline operators of Aggregate in SpringBoot Customize the collection userCollection and initialize the data structure Store bean u ...

1, Basic knowledge (1) Provider Message producer is the procedure of message delivery. (2) Consumer Message consumers are message receiving programs (3) Messaging when message queuing is not used (4) Message passing method after using message queue (5) What is message queuing A queue is like a warehouse ...

1, Developing web applications Spring Boot Web development is very simple, including common json output, filters, property, log, etc 2, json interface development In the past, when using spring to develop projects, what needs to be done when you need to provide json interfaces? 1. Add related jar packages such as jackjson 2. Configure spri ...

Transaction Delivery Properties for the 200202-SpringBoot series of tutorials For mysql, there may be several main points of knowledge about transactions at the isolation level; in the Spring system, there is also a transfer property of knowledge point transactions that is equally important when using transactions. This article will focus on ...

The latest version of Spring Cloud Finchley.M9 is used. When starting EurekaService, the system will report an error after starting. The prompt is as follows: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.cloud.netflix.eureka.serve ...

If you want speed, you will not reach it. If you want speed, you will reach it! hello, hello, I've met you again. Today is February 1, 2020. On the eighth day of the lunar new year, the Spring Festival will soon be over. The new type of coronavirus pneumonia has become the theme of the Spring Festival in 2020. I'm in awe of life. I hope I can ...

There is no end to learning. brief introduction HyperLogLog is an advanced data structure in Redis. It is mainly used for cardinal Statistics (de duplication Statistics) of massive data (2 ^ 64 data can be counted). It is characterized by high speed and small space (12KB). But there are errors in th ...

1, When using things in springBoot, it is found that the transaction is not executed normally and is not rolled back: @GetMapping("/addincome/1") @Transactional public String addIncome1(@RequestParam("name") String name, @RequestParam("amount") double amount) { try { User user = new User(); ...

The previous article mainly introduced two methods of @ bean @ ComponentScan package scanning injection. Today, I will introduce the related usage of @ Conditional injection and @ import component import 1. First, the usage of @ Conditional: judge according to certain conditions, register the beans ...