The error description is as follows: Reason for the error: The bean of type com.reggie.service.EmployeeService was not automatically assembled. The reason for my error was that I forgot to add the annotation @Service to the implementation class of EmployeeService, which means that automatic assembly was not implemented. Then I only need to add annotations to…
Error message: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘dataSourceScriptDatabaseInitializer’ defined in class path resource [org/springframework/boot/autoconfigure/sql/init/DataSourceInitializationConfiguration.class]: Unsatisfied dependency expressed through method ‘dataSourceScriptDatabaseInitializer’ parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘dataSource’ defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfigurationHikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method…
First: coverage -- Overwrite the application-dev.yml file in the file in the system, both specification methods are available By default, springboot reads application.properties>application.yml>specified file (application-dev.yml) first. Public configuration can be in application.yml, and other configurations in application-dev.yml 1）java -jar mssda.jar -Dconfig.file\=application-dev.yml 2）java -jar mssda.jar -Dspring.config.location=application-dev.yml Second: Directly quote all Use the following file to…
Build a SpringBoot Web project through idea Article Directory Build a SpringBoot Web project through idea Open idea and find create new project Creation method Configure project dependencies Create a new project module Summary 1. Open idea and find create new project Method 1 Method 2 2. Creation method New Project Select Spring Initializr ->…
Most of the traditional information management relies on manual registration and management by managers. However, with the rapid development of information technology in recent years, many old-fashioned information management models have been updated and iterated. Because of the complicated management content of housing information, , the large number of managements means that manual processing cannot…
Foreword In the springboot project, we often need to obtain configuration files, including but not limited to YML, XML, Properties, JSON and other types of files; Properties and YML are generally used as the main configuration files of the project and can be read by annotating @Value; so how should the JSON file be What…
Preface Spring is a lightweight open source framework in the field of Java EE programming. It was proposed and founded in 2002 by Rod Johnson, known as the “Father of Spring”. Its goal is to simplify the development of Java enterprise applications. Development difficulty and cycle. Spring has been favored since its birth and has…
Note: This article is based on Spring Boot 3.2.1 and Spring Security 6.2.1 Spring Security is very simple to use. Just introduce the relevant dependency packages and then add the annotation @EnableWebSecurity. It also provides a wealth of extension points, allowing you to customize permission verification strategies. Common usage scenarios are divided into two categories:…
SpringBoot implements Redis Stream queue Preface Simply implement the method of operating the Redis Stream queue in SpringBoot and monitor the messages in the queue for consumption. jdk：1.8 springboot-version：2.6.3 redis: 5.0.1 (Stream queue is only available in version 5 or above) Preparation 1pom redis dependency package (version 2.6.3) <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId>…
1. What is a state machine? State machine, also known as finite state automaton, is a computing model that represents a limited number of states and behaviors such as transitions and actions between these states. The concept of state machine can actually be applied to various fields, including electronic engineering, linguistics, philosophy, biology, mathematics and…