Programmer Group

Today I want to talk about the problem of circular dependency in spring. Recently, a large number of fans have asked this question, which is often asked in high salary interviews. On the issue of circular dependence, let's feel the serial gun and try whether you can pass the pass and deal with it easily. What is circular dependency? How to ...

Automatic configuration of data sources To access the data source, we need to import the JDBC scenario first <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jdbc</artifactId> </dependency> We found that he did not auto ...

Engineering dependency com.android.dialer is the main project and depends on com.android.contacts.common project and com.android.phone.common project com.android.contacts.common depends on com.android.phone.common project and com.android.common project In addition, some support packages are also introduced as link projects. The above codes ...

1. Function Isolated load class In some frameworks, middleware is isolated from application modules, and classes are loaded into different environments. Modify how classes are loaded The loading model of class is not mandatory. It should be loaded dynamically at a certain point in time according to the actual situation. Extended load so ...

Chapter 6: JSP technology: JSP overview, JSP basic syntax, JSP implicit object, JSP instruction, JSP action element, making two pages through JSP 1.JSP overview: 1.1 what is jsp: its full English name is java server pages, java server page. It is a dynamic web page development technology based on servlet specification. Java Server Page: you ca ...

Restrict prop to a list of types Using the validator option in the prop definition, you can limit prop to a specific set of values: export default { name: 'Image', props: { src: { type: String, }, style: { type: String, validator: s => ['square', 'rounded'].includes(s) } } }; Copy code The validator ...

1 background of hystrix With the improvement of business complexity and the continuous splitting of the system, a user-oriented API has layers of nested RPC calls, and the call chain may be very long. This will cause the following problems: Reduced API interface availability Citing an official example of Hystrix, suppose that an application ...

This article is a charging column. When the traffic becomes less, it will be moved to the charging column. Watch and cherish it! In the spring cloud architecture, the communication between microservices is based on Feign calls. In the actual use of Feign, we will probably face the following problems: Is Feign client on the consumer side or ...

1. Advantages of springmvc Light weight, easy to learnEfficientCompatible with springContract greater than configurationPowerful: restful, data validation, formatting, localization, themeSimple and flexible 2. springmvc Execution Principle The Dispatcher Servlet represents the front controller and is the control center for the entire springmv ...

Project link Welcome, star preface Refer to "write your own Java virtual machine" to write a JVM. This book uses Go to write a JVM without JIT, PGO, or even GC. It can be said that it is very useless. Then I rewrite the JVM in Java. The Java virtual machine written in Java can be said to be more useless. Regardless of Ecology (be ...