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8. SpringBoot: MVC auto configuration principle 12.1. Official website reading Before writing the project, we also need to know what configuration SpringBoot has made for our spring MVC, including how to extend and customize. Only by making these clear can we use them more easily in the future. Way 1: source code analysis, way 2: official do ...

Binding: assign the information in the request to the method parameters according to the principle of name matching. 1. Request path variable @ PathVariable Get the parameters from the request URI, excluding the query string, and? After the number. @RestController @RequestMapping("/user") public class UserAction { @GetMapping("/{id}") ...

1. Preface Exceptions refer to abnormal phenomena that occur during the running of a program, such as user input errors, division by zero, non-existent files to be processed, array subscripts crossing bounds, and so on. 2. Classification of Exceptions There are many exception classes defined in the JDK that correspond to a variety of possibl ...

Consider the following simple program that uses file service to upload files. What should Spring do to make it run normally? public class ApplicationContextDemo { public static void main(String[] args) { AnnotationConfigApplicationContext applicationContext=new AnnotationConfigApplicationContext(); applicationContext.regis ...

1. Spring Security brief introduction Spring Security is a framework that focuses on providing identity authentication and authorization for Java applications. Its strength is that it can be easily extended to meet customized requirementsfeatures Provide comprehensive and scalable support for identity authentication and authorizationPre ...

Original title: Spring certified China Education Management Center - spring data tutorial II of Apache Solr (spring China Education Management Center) 3.6. file map Although entity mapping is already supported in SolrJ, Spring Data Solr comes with its own mapping mechanism (described in the next section). DocumentObjectBinder has superio ...

Knowledge point set about AOP Concept: AOP is the abbreviation of Aspect Oriented Programming, which means Aspect Oriented Programming Aspect oriented programming: define and encapsulate the extended method in the aspect. There is no need to modify the source code to extend the method, and there may be many aspects Function: it can isolate e ...

I General description II Analysis of Spring source code III Examples Premise: Spring version is 5.0 x I General description 1. BeanFactoryPostProcessors It is an important extension point interface provided during the creation of the Spring container. It has a postProcessBeanFactory() method. When the scanning is completed according to the s ...

1. Monitor, filter and interceptor pairs (1) Servlet: Processing Request requests and Response responses (2) Filter: Filter requests before Servlet if configured to /* access all resources (servlet, js/css static resources, etc.) filter processing (3) Monitor ( Listener ): Implemented javax.servlet.ServletContextListener Connected ser ...

After the Spring container is started, the bean is first read xml The configuration file, then parses the definitions of various beans in the xml file, and converts each < bean / > element in the xml file into a BeanDefinition object, in which various information of the bean read from the configuration file is saved. After readin ...