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Form verification is an indispensable link when we submit a form. The common verification method is to judge each parameter separately, but this is not only troublesome, but also if we write too many if parameters, the code will be bloated and the readability will be poor. Take login as an example, supp ...

Preface In Java development, you usually choose the Jedis client to perform Redis related operations. In this article, you can use the spring boot project to quickly start Jedis related operations. Code case Basic configuration operation The specific code is as follows: <dependency> <gro ...

As for file upload and download, there are many better components that encapsulate in place for us now, and there are few things we need to do in practice. But here we will introduce the file upload based on the Commons file upload component and the file download based on the file stream. File upload ...

background As a rule, we need to talk about the background. After all, the problem comes from life, and the difficulty comes from work. If I eat, drink and have no worries every day, I believe I have no problem to write. The company's structure team is pushing a new basic framework, mainly because it is ...

An overview of the singleton pattern 1. Core: Ensure that a class has only one instance and provide a global access point to that instance. 2. Advantages of the singleton mode: 1) The performance overhead of the system is reduced because the singleton mode only produces one instance object.When th ...

Comparison between Thymeleaf and JSP Compared with JSP, the Thymeleaf template is native and does not rely on the tag library. It can be edited and rendered where the original HTML is received. Not coupled with servlet specification. There are some problems with JSP running on the embedded servlet con ...

1, Test code @SpringBootApplication public class SbmvcApplication { public static void main(String[] args) { SpringApplication.run(SbmvcApplication.class, args); } } My spring boot version here is 2.0.3.RELEASE <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http:/ ...

Pick up another article. After creating SpringApplication, the run() method is called public ConfigurableApplicationContext run(String... args) { 　　//timer, Monitoring start time StopWatch stopWatch = new StopWatch(); stopWatch.start(); ConfigurableApplicationContext context = null; Collection<SpringBootExceptionReporter&g ...

Pick up another article. 1, getRunListeners() The getRunListeners(args) method is called in the run() method, first look at what this method has done. private SpringApplicationRunListeners getRunListeners(String[] args) { Class<?>[] types = new Class<?>[] { SpringApplication.class, String[].class }; return new SpringApplica ...

Recently, I have taught myself some basic usage of springboot on mooc.com, and I have learned some relevant knowledge on the way to use it. Next, I will write down my learning achievements: This record is a simple addition, deletion, modification and query of mysql database using springboot+jpa. After a ...