Programmer Think

SpringBoot series (III) parsing complex parameters preface When we write the interface, we will pass in complex parameters, such as Map and Model. Such similar parameters will be parsed by the corresponding parameter parser, and finally the parsed value will be put into the request field. Let's explore the principle together. Tip: th ...

1, Foreword Requirements: a testing framework is needed to test an IM} system and adapt to the current business logic. Testing uses Jmeter. Jmeter can also test websocket. Why develop a testing framework yourself? The most important point: TCP # protocol is user-defined. It cannot be well integrated with # Jmeter # and other frameworks. P ...

The interviewer's soul from deep inside asked, "Tell me about the springboot startup process"; Stuffy-faced interviewer: "It simplifies the configuration of spring, mainly because of the auto-assembly feature and it can be started directly because it has a tomcat container embedded in it"; Interviewer:'Well, yes, this is s ...

The emergence of SpringBoot makes it very easy to use transactions in projects. There are two ways to use them, which are suitable for annotation transactions (declarative transaction management) of small projects and global transactions of large projects. 1. Annotation transactions. (secondary) There are only two steps to annotate transactio ...

automatic assembly According to the jar package dependency we added, some configuration class bean s will be automatically registered into the ioc container. We can use @ autowired or @ resource annotations where necessary Question: how is Spring Boot automatically configured and which components are automatically configured? We know that th ...

Introduction to off the shelf tools MyCat Active and good performance open source database middleware. It is a transparent database agent, which needs to ensure the high availability of services in the production environment. ShardingSphere ShardingSphere is composed of JDBC, Proxy and Sidecar (under planning), which can be deployed indepen ...

1. Environmental preparation1 Alibaba cloud servercentos7.9docker latest version2. Installation steps of dockerSet up warehouseInstall the required packages. Yum utils provides Yum config manager, and the device mapper storage driver requires device mapper persistent data and lvm2.sudo yum install -y yum-utils device-mapper-persistent-data lvm2 ...

Problem phenomenon Error 1 An error is reported after the spring type application is started, no main manifest attribute, in / APP jar Error 2 During the mvn build process, the message "repackage failed" will be prompted Cause analysis In most cases, it is because of the POM in spring application The spring boot Maven plug ...

This is the first article in the Spring interview question series. The theme of this article is: the design patterns involved in Spring and how to answer in the interview as comprehensively, accurately and deeply as possible. This article only answers one question: What design patterns are used in Spring? How are the differences realized? ...

SpringIOC/AOP There are two unavoidable contents in each interview: Pre knowledge: dynamic agent, static agent, singleton mode, factory mode and singleton lock IOC: inversion of control Description: OOP is a design principle and the core of Spring framework Reason for use: A B two types attract each other to call B in A. Traditional: A ac ...