Features 1. SmartInitializingSingleton is mainly used to perform expansion operations when the Spring container is started, that is, afterSingletonsInstantiated(); 2. The scope of the bean that implements the SmartInitializingSingleton interface must be a singleton, and only afterSingletonsInstantiated() will be triggered; 3. When afterSingletonsInstantiated() triggers execution, the non-lazy-loaded singleton bean has completed implementation, property injection, and […]
Tag: singleton
Solving TypeError: Singleton array array(data_input/xgboost/data_RentListingInquries/RentListingInqurie
Table of Contents Solving TypeError: Singleton array array(‘data_input/xgboost/data_RentListingInquries/RentListingInqurie wrong reason Solution 1. Check data dimensions 2. Check data type Summarize Sample code Detailed introduction to XGBoost principle Features application Solving TypeError: Singleton array array(‘data_input/xgboost/data_RentListingInquries/RentListingInqurie When using XGBoost for machine learning modeling, various problems are often encountered. One of the common errors is TypeError: Singleton array […]
ArrayList, LinkedList, Collections.singletonList, Arrays.asList and ImmutableList.of
Article directory List ArrayList LinkedList The difference between ArrayList and LinkedList Quickly build a list collection Collections.singletonList Arrays.asList ImmutableList.of There are three types of Java collection types: set (set), list (list) and map (map), and the List collection is a very commonly used collection type. List Our common usage: List<Object> arrays = new ArrayList<>(); First […]
Manually implement the underlying mechanism of Spring [initialize the IOC container + dependency injection + BeanPostProcessor mechanism + AOP] to achieve the task phase 3 – initialize the bean singleton pool and implement the task phase 4 – complete the dependency injection
Preface Manually implement the underlying mechanism of Spring [Initialize IOC Container + Dependency Injection + BeanPostProcessor Mechanism + AOP] The fourth part realizes task phase 3-initialize bean singleton pool and implement task phase 4-complete dependency injection Personal homepage: Chenjue homepage Personal profile: Hello everyone, I am Chenjue. I hope my articles can help everyone. Your […]
qmlRegisterSingletonType
1. qmlRegisterSingletonType 1.1 Introduction qmlRegisterSingletonType() is a C ++ function template for registering singleton types in Qt Quick, so that in These singleton objects can be directly accessed and used in QML. 1.2 Function A C++ class can be registered as a singleton type using qmlRegisterSingletonType(), which means that throughout the QML application, Only one […]
tried to access field org.slf4j.impl.StaticLoggerBinder.SINGLETON from class org.slf4j.LoggerFactory
When configuring log files, slf4j and logback report errors, version problems: Caused by: java.lang.IllegalAccessError: tried to access field org.slf4j.impl.StaticLoggerBinder.SINGLETON from class org.slf4j.LoggerFactory at org.slf4j.LoggerFactory.<clinit>(LoggerFactory.java:60) at cn.gov.zjport.pen.restapi.config.AsyncServiceConfig.<clinit>(AsyncServiceConfig.java:22) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.springframework.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:386) at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:219) at org.springframework.cglib.proxy.Enhancer.createHelper(Enhancer.java:377) at org.springframework.cglib.proxy.Enhancer.createClass(Enhancer.java:317) at org.springframework.context.annotation.ConfigurationClassEnhancer.createClass(ConfigurationClassEnhancer.java:128) at org.springframework.context.annotation.ConfigurationClassEnhancer.enhance(ConfigurationClassEnhancer.java:100) at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:380) … 53 more 28-Apr-2019 10:27:46.412 SEVERE [RMI TCP Connection(2)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal […]
Avalonia uses EFCore to call SQLite to implement Singleton global registration
Avalonia uses EFCore to call SQLite to implement Singleton global registration This blog is an updated record sharing of my open source project TerraMours.Chat.Ava. This update uses EntityFrameWork Core to call SQLite to achieve data localization and query optimization. is deleted dbpross class (directly call the operation class of SQLite). Greatly improved the conciseness and […]
Springboot tomcat bean default scope singleton simulates thread insecurity and sets multiple instances of prototype
Directory Write a control layer class Authentication method ?edit Execute the following requests separately, and execute the ones that have been waiting for a long time first log results in conclusion Configure multiple instance mode Configuration file application.properties Annotate the class configuration class Add verification, control layer, and service layer are all in singleton mode […]
“Design Pattern” – Creational Type (Singleton Mode, Factory Mode, Builder Mode, Prototype Mode)
Series article directory “Design Patterns” – Code Quality Evaluation Standards and Design Principles “Design Pattern” – Creational Type (Singleton Mode, Factory Mode, Builder Mode, Prototype Mode) “Design Mode” – Structural Type (Proxy Mode, Decorator Mode, Adapter Mode, Bridge Mode, Facade Mode, Combination Mode, Hengyuan Mode) Article directory Series Article Directory foreword 1. Singleton mode 3 […]
cpp: Singleton Pattern
/********************************************** *******************//** * \file GoldConfig.h * \brief Singleton Pattern Singleton Pattern Singleton Pattern, Singleton * * \author geovindu Tu Juwen Geovin Du * \date 20 May 2023 ***************************************************** *******************/ // GoldConfig.h: This file contains the “GoldConfig” class. Decorator Pattern Singleton Pattern C++14 // //Singleton Pattern Singleton Pattern Singleton Pattern, Singleton // May 20, 2023 Tu […]