Programmer Group

1. Strategic Model A policy pattern defines a set of algorithms that encapsulate each one and make them interchangeable 1. Primary Role of Policy Patterns The main roles are as follows: Encapsulation role (Context): Also known as context role, it acts as a connecting link between encapsulation and ...

Configuring spring mvc with annotations (1) configuration file for spring mvc <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="htt ...

Opening Word Spring Boot Actuator Is a subproject of Spring Boot.It adds several production-level services to your application, which don't require much effort from you.In this guide, you will build an application that adds these services.   Applications you will create This guide will guide you in ...

The previous article mainly introduced two methods of @ bean @ ComponentScan package scanning injection. Today, I will introduce the related usage of @ Conditional injection and @ import component import 1. First, the usage of @ Conditional: judge according to certain conditions, register the beans ...

Controller Controller complex provides the behavior of accessing application program, which is usually realized by two methods of interface definition or annotation definition. The controller is responsible for parsing the user's request and converting it into a model. In Spring MVC, a controller cla ...

[eye] 1. A way to start Spring BootService startup class package com.npc.rest; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.ImportResource; /** * Frozen * 2020-1-29 */ /** * Previously, users used three annotations to ...

Reprint please indicate Original: https://me.csdn.net/jxysgzs 1, Necessary foreword We learned about the basic use of spring datajpa through the previous article. In this article, we will explain the basic addition, deletion, modification and query. After all, CURD operation is essential for every p ...

Recently, I revisited Java enumeration and saw this article that I thought was good, so I simply translated and improved some content and shared it with you. I hope you can also get something. In addition, don't forget that there is a supplement at the end of the article! ps: here is an enumeration article, which is also a very practical pract ...

  AOP concepts 1 aop: Aspect oriented programming, extensions do not modify the source code implementation.   2 aop takes the horizontal extraction mechanism instead of the traditional vertical inheritance system duplicate code.   3 aop underlying implementation using dynamic proxy (1) In t ...

1. Classes to enhance package com.test.springadvicetype; import org.springframework.stereotype.Component; import java.text.SimpleDateFormat; import java.util.Date; /** * Attendants */ @Component public class Waiter { /** * service * @param name */ public String serve(String name) { System.ou ...