Someone said they wanted to see: org.springframework.beans.factory.UnsatisfiedDependencyException exception solution, so today, he is here! ! ! ! When you first started working on SpringBoot, you were high-spirited and unmotivated. With the great goal of abandoning the cumbersome configuration of traditional MVC, you eagerly embraced the SpringBoot framework model because you know the core of springboot: […]
Tag: factory
Spring – BeanFactoryAware extension interface
Article directory Pre org.springframework.beans.factory.BeanFactoryAware Extension point description Aware interface Execution timing and order of Spring’s built-in Aware interface Source code analysis (direct call) Source code analysis (BeanPostProcessor call execution sequence) Extension point example Pre Spring Boot – List of extension interfaces org.springframework.beans.factory.BeanFactoryAware package org.springframework.beans.factory; import org.springframework.beans.BeansException; /** * Interface to be implemented by beans that […]
Spring BeanFactory
Spring BeanFactory 1.What is Spring BeanFactory Spring BeanFactory is the infrastructure of Spring containers. All containers inherit from BeanFactory. , which is a factory that manages and maintains Spring Beans. BeanFactory is responsible for creating, configuring, and managing Bean instances, and also provides management and control of the Bean life cycle. BeanFactory is the most […]
FactoryBean for Spring instantiation source code analysis (11)
Originally, this chapter needed to explain the instantiation process of singleton beans, but suddenly I discovered that the custom FactoryBean was actually instantiated during registerBeanPostProcessors, and I planned to find out. The function and usage of FactoryBean have been explained in the article Manually Implementing the Mybatis Proxy Interface Object. This chapter mainly analyzes the […]
springframework.beans.factory.NoSuchBeanDefinitionException:No qualifying bean of type x available
Article directory 1. Reproducing the error 2. Analysis errors 3. Solve the problem 3.1 Solution 1 3.2 Solution 2 4. Analyze the dynamic proxy of jdk and cglib in spring 4.1 Dynamic proxy comparison 4.2 Differences in principles 4.3 Performance differences 4.4 Respective limitations 4.5 The essential difference between static agents and dynamic agents 1. […]
Spring Cloud Alibaba GateWay’s routing assertion factory
Spring Cloud Gateway uses route matching as the most basic function. This function is accomplished through the routing assertion factory. Spring Cloud Gateway contains many built-in routing assertion factories. All these assertions can match different attributes of HTTP requests, and multiple routing assertion factories can be combined based on logic and status. 1. After routing […]
Factory Method Pattern
Alias Virtual Constructor. Definition The factory method is a creational design pattern that provides a method to create objects in the parent class and allows the subclass to determine the type of instantiated object. Foreword 1. Question Suppose you are developing a logistics management application. The initial version could only handle trucking, so most of […]
Springboot extension point series_BeanFactoryPostProcessor
1. Functional features The execution of BeanFactoryPostProcessor is a very important part of the Spring Bean life cycle; BeanFactory level post-processor, org.springframework.beans.factory.config.BeanFactoryPostProcessor#postProcessBeanFactory will only be executed once during the Spring life cycle; Allows the BeanDefinition data to be read after the container reads the BeanDefinition data and before the bean is instantiated, and can be […]
In-depth Spring principles-1.The difference between BeanFactory and ApplicationContext
About the author: Hello everyone, I am Tudou Ni who loves cheese. I am a Java contestant in the 24th class of school admissions. Nice to meet you all. Series of columns: Spring source code, JUC source code If you feel that the blogger’s article is not bad, please support the blogger three times in […]
Analysis of the underlying principles of the mybatis framework (session factory and caching mechanism) with detailed code examples
Analysis of the underlying principles of mybatis framework 1, session factory creation analysis The XML-based creation process is roughly as follows: 1. Read the configuration file through IO stream 2. Parse IO data and encapsulate it (all information will be stored in the Configuration object) 3. Create a SqlSessionFactory object based on the configuration object […]