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Recently, I took the time to summarize the basic knowledge of HashMap and sort out the previous questions. After reading this article, you will learn the following questions 1. What is hash()? What is the role? 2. What is hashcode()? What is the role? 3. What is the hash value? ----------- ...

Article directory 1 http module 1.1 basic usage 1.1.1 module attributes 1.1.1.1 properties of HTTP request 1.1.2 module method 1.1.2.1 method of HTTP module 1.1.2.2 method of server instance 1.1.2.3 HTTP response method 1.1.3 processing GET requests 1.1.4 processing POST requests 1.2 request 1. ...

Three components of javaWeb: Servlet Listener Filter This blog mainly talks about Listener listener. Monitor: The listener is an interface, and its specific content is implemented according to its own needs. Methods in the listener are called when a particular event occurs It needs to be registered ...

Function menu configuration automatically generates routing and code cutting Menu is routing, shared configuration Appointment The views directory stores the business components; the business modules are stored in folders, and the main routing components are stored in the directory with the routing name named by index. views * * business compon ...

Address of original English document: click here 8. Configure the route according to the configuration document The configuration of Spring Cloud Gateway is controlled by a series of "RouteDefinitionLocator" interfaces, which are as follows: public interface RouteDefinitionLocator { Flux<RouteDefinition> getRouteDefinitions(); ...

Problem Description: In IE8 and below versions, clicking the label does not automatically trigger the click event of the checkbox, resulting in the failure to produce the desired effect.         Original HTML code: 1 <div class="col-sm-2"> 2 <label><input type="checkbox" id="chk_sqjc" value="Application for insp ...

#Class notes, only you can read them First, some states of threads:Thread control joint controlThird, background thread Note 1: /* * Deadlock: *It can't be solved, it can only be avoided *jvm does not detect and avoid, so program source should avoid deadlock. *Thread class: *suspend() *Both methods of r ...

1. Download multimedia files (pictures / videos / files, etc.) by clicking The easiest way: <a href='url' download="filename.ext">Download File</a> If the url points to the same source, it is normal. If the url points to a third-party resource, the download will fail, and the performance is the same as when the download is not u ...

Color space conversion of a picture Gray color space Single channel, value range [0255] 0 black 255 white RGB color space (BGR is used in opencv) The range of R, G and B channels in opencv is [0255].   HSV/HSL color space      H: 0-180  S: 0-255 V: 0-255 HSV is a representation of points in RGB color space in an inverted cone ...

WebAPI I. definition of WebAPI II. WebAPI creation 3. WebAPI routing control I. definition of WebAPI A framework for providing data to the front end Restful data supply mode Post submission data (added) Get data (check) Put modification data (modification) Delete delete data Common for the fir ...