Programmer Think

1, Completable future asynchronous orchestration 1. Business scenario The logic of querying the product details page is complex, and some data needs to be called remotely, which will inevitably take more time. If each query of the product details page needs the time indicated below to be completed, then the user needs 5.5s to see the content ...

Experienced spring MVC users should have a general understanding of its HTTP request processing process. Spring MVC is an extension of the native Servlet, which maps the request method and the request processing method, that is, the path specified in our common @ RequestMapping and the mapping of the method with @ RequestMapping annotation. Thi ...

Before introducing the agent mode, the blogger wants to say something "out of the question". The blogger likes playing games, especially hero League, especially compression. The blogger's compression can be said to be "fantastic". The blogger's friends call the blogger "tuoersuo". In other words, although the blogg ...

Use of File class java.io.File class: the abstract representation of file and file directory path, which is platform independent File can create, delete and rename files and directories, but file cannot access the file content itself. If you need to access the file content itself, you need to use input / output streams. To represent a real Fil ...

1. SpringBoot Javase:OOP mysql: persistence html+js+css+jquery + framework = view, unskilled framework, poor css javaweb: a website that independently develops MVC three-tier architecture ssm: framework, which simplifies our development process and makes the configuration more complicated war: tomcat running Spring re simplification: spr ...

    Common annotations and usage in spring MVC Introduction to MVC Introduction to spring MVC Common annotations in spring MVC @GetMapping @RequestParam @RequestBody @PathVariable @RequestHeader @CookieValue @ModelAttribute @SessionAttributes New annotation @Difference between RequestMapping and @ GetMapping @PostMapping I ...

Introduction to OpenFeign Feign is a declarative Web Service client. Its appearance makes it easy to develop Web Service clients. To use feign, you only need to create an interface and add corresponding annotations, such as FeignClient annotation. Feign has pluggable annotations, including feign annotations and JAX-RS annotations. Feign als ...

A little morning light lights up the noisy world There are many collection classes (the storage capacity can be changed, providing a storage model with variable storage space). Today we introduce one: ArrayList ArrayList < E > ...

[1. House on the street, happy thief No. 1] 198. House raiding (medium) You are a professional thief who plans to steal houses along the street. There is a certain amount of cash hidden in each room. The only restrictive factor affecting your theft is that the adjacent houses are equipped with interconnected anti-theft systems. If two adjacen ...

JavaWeb Basic concepts preface web development web pageStatic web html, cssThe data provided to everyone will never change Dynamic web The data provided to everyone will always change, and everyone will see different information at different times and placesTechnology stack: Servlet / JSP, ASP, PHP In Java, the technology of dyna ...