The difference between slf4j and logback. Slf4j (Simple Logging Facade for Java) is a log facade of Java that implements some common apis for the logging framework. Logback is the specific logging framework. It has the same author as log4j, the new logging framework developed to address the problems of log4j. Slf4j and logback can …
Besides define Spring beans in a configuration file, Spring also provides some java annotation interface for you to make Spring bean declaration simple and easy. These interfaces are also called stereotype annotation. They are @Component, @Repository, @Service, and @Controller. If you want to reference such a bean, you just need to annotate that field with …
Spring Autowire Use @Component, @Repository, @Service and @Controller Annotations Read More »
Spring event architecture makes event publication and receives so easy. You can just configure the event publisher and listener object as Spring beans in the application context XML file. And then use them to send and receive events in your java code. This method decoupled the java event object relationships if you hardcode them in …
When your Spring project becomes bigger and bigger, the Spring bean configuration file may become very large. So you have to split it into several sub bean configuration files, each one includes a special group of beans definitions. But how to load them in your java code, this article will show you methods.
Spring FactoryBean is a special bean in the spring framework. It can be used as a bean factory to create other Spring-managed beans. You may be already familiar with built-in FactoryBean such as JndiObjectFactoryBean which is used to lookup JNDI object, LocalSessionFactoryBean which is used to create hibernate session objects, but this article will tell …
When your Spring application startup, you may sometimes encounter such exceptions. org.springframework.beans.factory.BeanDefinitionStoreException. And the error message maybe like below. Failed to read candidate component class: file nested exception is org.springframework.core.NestedIOException: ASM ClassReader failed to parse class file – probably due to a new Java class file version that isn’t supported yet: nested exception is java.lang.IllegalArgumentException …
Spring Application Start Throw BeanDefinitionStoreException Read More »
