SpringBoot (16) Components for selecting elements (1/3).Combos

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Spring Boot (5) Bootstrap 5 multilevel dropdown menu

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 0. Introduction This post is based on  Frontend Paathshala bootstrap-menu.com ByteGrad These components are used  2 classes for defining menus (including the configuration file for reading the YAML file) A YAML file for storing the menu definition A controller of the URL used by the menu A ThymeLeaf file and 2 fragments CSS file 1. The Menu classes (and the configuration class) The menu class has the component of a menu, indicating the name, the href and so on package ximo . menus ; import java . util . ArrayList ; import java . util . List ; import lombok . AllArgsConstructor ; import lombok . Getter ; import lombok . NoArgsConstructor ; import lombok . Setter ; @Getter @Setter @AllArgsConstructor @NoArgsConstructor public class Menu { private String id ; private String name ; private List < String > idFills ; private String href = "#" ; private List < Menu > fills = new ArrayList < Menu > ( ) ...
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Spring Boot (2) Websockets. Subscriptions of only one member

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 1. Introduction WebSockets are useful for informing a user of the progress of a heavy process. There are a lot of blogs and videos about this question.  Spring boot uses the STOMP protocol 2. Creating the project Use Spring boot initializer  for creating the project, use these dependencies: Spring boot dev tools Lombok Spring Web Thymeleaf Websocket And use gradle format Then import it from Eclipse as File > Import > Gradle > Existing Gradle Project The final project structure after adding all the needed classes, html and js file is: 3. Add the needed dependencies to the build.gradle file Add javascript dependencies to the build.gradle implementation ' org.webjars:webjars-locator-core ' implementation ' org.webjars:sockjs-client:1.5.1 ' implementation ' org.webjars:stomp-websocket:2.3.4 ' implementation ' org.webjars:bootstrap:3.3.7 ' implementation ' org.webjars:jquery:3.6.4 ' Add also the Gson dependencies, and the build.xml file ...
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SpringBoot (10) Authentication (1). Server certificate, application.yml and Application.java

 0. Introduction The goal is to use a certificate for client authentication. So the HTTPS protocol should be used.  To use this protocol, a server certificate is needed. Let's see the steps to accomplish this target: 1. Server certificate Get a server certificate in "p12" format with a password.  Create a folder ( keystores ) in src/main/resources and place the server certificate in this folder. 2. application.yml file Here is the file ====================================================================== server : #==================================================================================== # 1. For accepting "{ }" in parameters and for accepting a long number of parameters #==================================================================================== #@see https://stackoverflow.com/a/58440058/7704658 #@see https://www.programmersought.com/article/4517808578/ tomcat : relaxed-query-chars : [ ' { ' , ' } ...
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