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Suppose that there are five attribute values in the database, namely id,name,sex,age and hobbies. It is required that hobbies are presented in the front end in the form of array. At this time, it can be realized through JSON. At first, I thought of using JSON directly in impl, but there is a problem that there are not only hobbies, but also ID, ...

SpringBoot SpringBoot has all the advantages of spring, such as open source, lightweight, non intrusive and so on. Spring's own inversion of control (IOC) and aspect oriented (AOP) programming are also the characteristics of SpringBoot. However, spring itself has unavoidable disadvantages. First, it is the heavyweight configuration. Variou ...

Pre SpringBoot - elegant implementation of [parameter verification] advanced SpringBoot - elegant implementation of [custom parameter verification] advanced SpringBoot - elegant implementation of [parameter grouping verification] advanced With the Validator framework, what do you want to do with Assert In short, Validator only ...

preface What is a distributed system? The emergence of distributed system is to complete the calculation that can not be completed by a single computer in a more cost-effective way and more ordinary machines. Four stages of architecture evolution Single application architecture Deploy all functions together to reduce deployment nodes and c ...

This article introducesWe all know that the Spring Boot project consists of starters, such as web starters, redis starters and so on.By introducing the corresponding starter through maven, we can perfectly use the integrated spring mvc or redis without configurationSo how do we customize a starter?This article will show you how to use the auto ...

In the process of developing program system, we often need to consider the problem of system security, Like this, it's like your database is running naked, isn't it? Maybe someone quietly deleted the database and let you run away? Therefore, the plaintext password cannot appear in the configuration file. Next, I will give you a detailed in ...

Spring Boot is a new development framework under the spring family. Its design purpose is mainly to simplify the creation and development process of spring applications. It provides features such as automatic configuration and starter dependency, so as to free developers from a large number of XML configurations. Spring Boot is committed to bec ...

Many beginners will be confused about how Spring Boot packages the application code and all dependencies into a separate Jar package, because after the traditional Java project is packaged into a Jar package, the dependencies need to be specified through the - classpath attribute before it can run. Let's analyze and explain the startup principl ...

1, Preface(1) Background contentThe most common selection component of DAO layer in software application technology architecture is MyBatis. Friends who are familiar with MyBatis know how beautiful MyBatis was in the past. XML files are used to solve the problem of complex database access. Today, the former Dragon Slayer has finally become a dr ...

@Bean The @ Configuration annotation mentioned earlier is equivalent to turning a class into spring Configuration xml, how to inject beans with Configuration files? This requires the annotation @ Bean, which is used for methods. Adding @ Bean to a method is equivalent to adding a < Bean > tag to xml. Let's take a look at an example first ...