Programmer Think

1, Why use validator? Parameter verification is a very important step in the development process. If the front-end parameter verification is for user experience, the back-end parameter verification is for security. Have you ever done parameter verification? Judge one field by one. The disadvantages of this approach are obvious - code redundanc ...

Introduction to spring security Spring security is a security framework for spring projects. It is also the default technology type of the underlying security module of spring boot. It can realize powerful Web security control. For security control, it provides Authentication，to grant authorization and Protection against common attacks . It ...

Chapter 1 control inversion / dependency injection in Spring review Add, delete, modify and check. Pre class test: Contents of this chapter Spring: Spring IOC: give the power to create objects to the spring core container. Factory mode BeanFactory: lazy man ApplicationContext: hungry man < bean id="" name="" class="" scope="" > T ...

1, Gossip The weekend is coming again. Today, finish the spring blog, and then start the review of mybatis. I read it in July last year. If I don't write a blog, I'll soon forget it. Ha ha 2, Review mybatis and introduce integration methods 1. mybatis review mybatis has written a simple example before. You can take a look at the previous bl ...

1, @ ModelAttribute usage Bind request parameters to command object (input parameter object): when placed on the input parameter of the controller method, it is used to bind multiple request parameters to a command object, so as to simplify the binding process, and is automatically exposed as model data for use in view page display; When t ...

1, About servlet s Explain servlet in detail, https://www.runoob.com/servlet/servlet-tutorial.htmlOverview: Servlet and servlet container Java Servlet (Java Server applet) is a Web component based on Java technology. It runs on the server side. It is managed by the servlet container and used to generate dynamic content. Servlet is a platform ...

Business background There is such a requirement in the project. A form stores supplier information. At the same time, it is necessary to select different suppliers to bring out the basic information and company qualification documents of the corresponding suppliers. Similar to a cascade operation, the supplier information is dynamically displa ...

Understand the principle of automatic configuration 1. SpringBoot features 1.1. Dependency management Dependency management of parent project Dependency management <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version ...

Ioc and annotation development 1. Spring configuration data source 1.1 function of data source (connection pool) Data source (connection pool) is the key to improve program performanceInstantiate the data source in advance and initialize some connection resourcesGet from data source when using connection resourcesReturn the connected res ...

preface In the previous security, relevant configurations and tests were conducted for configuration items. But these are based on security config. Myconfig #configure (org. Springframework. Security. Config. Annotation. Web. Builders. Httpsecurity) to restrict the permission of the corresponding request. If there are multiple reque ...