Programmer Think

prefaceFriends who have landed micro service projects should be familiar with the configuration center. The configuration center can be used for centralized management of configuration and hot update of configuration. At present, the common configuration centers in the market include QConf, spring cloud config, diamond, disconf, apollo, nacos, ...

Open Tomcat management interface Modify Tomcat \ conf \ Tomcat users XML add user <role rolename="manager"/> <role rolename="manager-gui"/> <role rolename="admin"/> <role rolename="admin-gui"/> <user username="tomcat" password="tomcat" roles="admin-gui,admin,manager-gui,manager"/> Note: Tomcat9 also needs t ...

The hardware manufacturer is protecting the core code and will present the core implementation in the HAL layer in the form of so library. When necessary, HAL will automatically call the relevant shared library. Format of shared library <MODULE_ID>.variant.so id: the unique number of the hardware moduleVariant: the variant name. T ...

JSR303 performs data verification 1. Add verification annotation to Bean Multiple annotations can be verified @NotBlank(message = "Brand name cannot be empty") private String name; //Cannot be empty + custom rule @NotEmpty @Pattern(regexp = "!/^[a-zA-Z]$/",message = "The search initial must be a letter") private String firstLetter; //Canno ...

Simple analysis of ReentrantLock source code Most of the content comes from reprint https://www.cnblogs.com/waterystone/p/4920797.html , I only wrote the state and Condition sections, Author: Water rock source: http://www.cnblogs.com/waterystone Articles not reproduced in this blog belong to the author Water rock It is shared with the b ...

1. Brief introduction of bubble sorting Bubble Sort, also known as Bubble Sort, is a simple sorting algorithm. It repeatedly visits the columns to be sorted, compares two elements at a time, and exchanges them if they are in the wrong order. The work of visiting a number of columns is repeated until no exchanges are needed, that is, the ...

In the past, Pangge took you to realize verification code authentication with Spring Security filter. Today, let's improve the configuration of verification code authentication, which is more in line with the design style of Spring Security and more internal.CaptchaAuthenticationFilter is implemented by imitating UsernamePasswordAuthenticationF ...

The Spring framework summarizes the common ways in which Spring creates bean s 1, Common ways Spring creates bean s xml configuration file@Bean annotation@ComponentBeanDefinitionFactoryBeanSupplier 2, Use of various creation methods 1.xml configuration file First create a User entity class public class User { private String name; ...

Project description This project is a learning note document based on Shang Silicon Valley video, which is only used for learning, combing and summarizing relevant knowledge for later review, not for commercial purposes. Project introduction According to the basic frameworks such as Spring, Spring MVC and MyBatis, a simple addition, dele ...

abstract Idle boring, so I wrote this cool article, which Mina sang can use directly, unless there are almost no bug s, when I didn't say (doge) QA: why don't you rely on the operation encapsulated by springboot? Ou believes that springboot over encapsulates the operation class, and it is OK to realize ordinary and simple operations, but i ...