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Stream and Optional in Java 8 bring us the fun of functional programming, but Java still lacks many key features of functional programming. Lambda Expressions Optional and Stream It's just the tip of the iceberg for functional programming. This also led to the emergence of varvr and functionlajava class libraries, both of which originated from ...

Next, we will focus on how to use uniform exception handling in SpringBoot applications.How do I reuse exception data with normal business data and return it as a json?   Why uniform exception handling Currently, our project architecture is basically a separate front-end and back-end model: developed using Restful interface protocol, the fo ...

Spring IOC and Factory Mode PS: The content of this article is hard core, which requires a better understanding of java's object-oriented, reflection, class loader, generics, properties, XML and other basic knowledge. (1) Brief introduction Before talking about Spring IOC, it's necessary to talk about Factory Pattern.Factory mode separates the ...

1. Introduction In JDK, java.net.URL is applicable to the classes that load resources, but the implementation classes of URL access network resources, and there is no way to obtain files and ServletContext from class path or relative path, Although the new handler can be implemented by customizing the extended URL interface, it is very complex. ...

After successful login, automatically kick off the previous login user. Songge first saw this feature inside the button. It was fun at that time. Once you've done your own development, you've met the same requirements. Just as the recent Spring Security series is being serialized, you can use Spring Security to talk about how this function work ...

Last article I've talked about how to use a more elegant way to customize Spring Security login logic. A more elegant way can effectively avoid the inefficiency brought by custom filters. I suggest you read it and understand the authentication logic in Spring Security by the way. Based on the above, this paper will continue to discuss with you ...

Author: Pang xiansen https://juejin.im/post/5a795bad6fb9a0634f407ae5 Java 8 introduces a new date time API. In the tutorial, we will learn how to use the new API through some simple examples. The way Java deals with date, calendar and time has always been criticized by the community. Setting java.util.Date as a variable type and the non thre ...

Popular understanding of spring source code (5) -- parsing and registering bean definitions Last section talked about how to get document. After converting the document to document, the next extraction and registration bean is our play. protected int doLoadBeanDefinitions(InputSource inputSource, Resource resource) throws Bea ...

The static multilingual configuration file is placed in the Resource Bundle under the resources directory and configured in the form of key=value For example, in Chinese: messages ABCD cn.properties Property1 = property1 Property2 = property2 English: property1=property one property2=property two Configuration Internationalization: @Con ...

Spring transaction management Commit and rollback transactions to spring   1, Brief introduction In Java EE development, transactions are in the Service layer, Judged by the program: in case of abnormal transaction rollback, no abnormal transaction commit occurs. Spring uses AOP technology for transaction control, and helps developers t ...