Programmer Think

📑 Content of this article: SSM framework integrates Druid from simple to deep, and SpringBoot takes over Druid configuration 📘 Article column: Principle and project development of SpringBoot microservice 🎬 Last updated: January 25, 2022 SpringBoot quick start - this quick start is different. It teaches you the method, not the technology. It ...

Problem phenomenon In our project, there is an internal two-party package with a class: MvcInterceptorAutoConfiguration defines a Bean accessContextResolver. To generate this Bean, you need to automatically inject another Bean: accessContextService. The code is as follows: public class MvcInterceptorAutoConfiguration implements WebMvcConfigur ...

reference material: Learning Spring IoC source code: Context: detailed explanation of component scan node Previously:  Spring IOC: parseCustomElement call chain Written at the beginning: This article is a personal study note. The content is relatively casual and mixed with personal understanding. If there are mistakes, you are welcome to cor ...

Author: Xiao Fu Ge Blog: https://bugstack.cn Precipitate, share and grow, so that you and others can gain something! 😄 1, Foreword I can't understand the code written by my colleagues! The big guy's code is like "Lai toad bubble frog, Zhang's ugly flower": a class implements multiple interfaces, the inherited class inherits ...

survey In the recent report writing function, when the data is inaccurate, you need to check the SQL running on the current interface and compare whether there is a problem with the SQL. Then you need to get the SQL statement running on the interface on the business side. The realization of this function is mainly considered from two aspects. ...

Problem discovery At 9 a.m. on January 21, 2022, a large area of "system unknown error" was reported in the order system, resulting in some users unable to place orders normally. Query the background log and you can see a large number of duplicate class attempt s. java.lang.LinkageError-->loader (instance of org/springframework/ ...

catalogue 1, What is Mock? 2, Why use PowerMock? 3, Common notes and methods of PowerMock 4, How to use PowerMock for unit testing? 1, What is Mock? Mock is to create a mock object to simulate the behavior of some objects that are not easy to construct / obtain during the test. For example, if you need to call the B service, but the B se ...

What is Spring Spring is a lightweight open source framework for layered Java SE/EE application full stack, with IOC (inversion control) and AOP (aspect oriented programming) as the kernel configuration file Name: whatever, but don't have Chinese Location: whatever <?xml version="1.0" encoding="UTF-8"?> <!-- Import constraints spr ...

1 transaction manager 1.1 description Spring abstracts a complete set of transaction management mechanism from different transaction management API s, which makes the transaction management code independent of specific transaction technology. Developers manage transactions through configuration without knowing how the underlying layer is impl ...

background As required by the company, it is now necessary to make statistics on the data of the questionnaire filled in by the user. The final presentation style is EXCEL, and the content is the options of each question filled in by the user, that is, the following table style: User ID numberQuestion 1Question 2Question 3...Question 22110000 ...