Shulou(Shulou.com)06/01 Report--

This article shows you how to quickly create a SpringBoot project, the content is concise and easy to understand, can definitely brighten your eyes, through the detailed introduction of this article, I hope you can get something.

Here's a brief introduction to SpringBoot, and then create a SpringBoot project.

What is Spring Boot?

Spring Boot is designed to simplify the initial building and development of new Spring applications, to allow developers to create and allow Spring applications as quickly as possible, and to minimize the number of configuration files for the project.

Basically, a Spring Boot is a collection of libraries that can be used by the build system of any project. It uses the concept of "habit over configuration" (there are a large number of configurations in the project, in addition to a habitual configuration) to get your project up and running quickly. So spring boot is not really a new framework, it configures many frameworks by default, just like maven integrates all the jar packages and spring boot integrates all the frameworks.

To sum up, it is:

(1) provide a faster and more extensive getting started experience for all Spring developers.

(2) Zero configuration. No redundant code generation and XML mandatory configuration, follow the "convention is greater than configuration".

(3) the configuration of a large number of commonly used third-party libraries is integrated, and Spring Boot applications provide these third-party libraries with almost zero configuration out-of-the-box capabilities.

(4) provide a series of non-functional features commonly used in large projects, such as embedded server, security, measurement, health check, externalization configuration, etc.

(5) Spring Boot is not a substitute for Spring. Spring framework manages Bean through IOC mechanism. Spring Boot relies on the Spring framework to manage object dependencies. Spring Boot is not a stripped-down version of Spring, but is a product-level preparation for using Spring.

Environmental preparation

(1) the JDK environment must be 1.8 or above.

(2) IDEA or Eclipse is recommended for development tools. It's always been my side.

Quickly build Spring Boot with idea

There are several ways to create a new SpringBoot application:

1. Create using Spring Initializr built into IDEA (File-> New-> Project-> Spring Initializr)

2. Create a basic Maven project, modify pom.xml and add spring-boot-parent

3. After visiting https://start.spring.io to select dependencies, generate the project, download it, and import it to Idea.

Usually we use the first one, create a new project directly with IDEA. Let's explain how to create a Spring Boot project step by step.

Step 1: create a new Spring Initializr project:

(1) Select Spring Initializr

(2) Select SDK, and click * * new * * here is the required version 1.8 for JDK, and select the JDK directory you installed:

(3) then select the default url (never mind) and click [Next]:

(4) then fill in the project information:

(5) check Web dependency first:

(6) choose related dependencies according to your own project, or you may not choose them, and add later when necessary:

(7) Select the location of the project, and click [Finish]:

(8) if you configure Spring Boot for the first time, you may have to wait a while for IDEA to download the corresponding dependency package. The project structure created by default is as follows:

As you can see in the figure above, the whole project structure still looks simple without too many configuration files, and SpringBoot does not need too many configuration files. Let's see what is generated by default:

SpringbootApplication: a class with the main () method that starts the application.

Application.properties: the configuration file of the entire application. The default is an empty properties file. Configure the port number, program name and other properties of the application, which we will talk about later.

Pom.xml: the package depends on files.

Step 2: create the controller Controller

Without a controller, the project will not work, so let's create a controller to verify whether the project has been created successfully.

Create a new [HelloController] under the [src/main/java/com.weiz.controller] package:

Package com.weiz.controller

Import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController

@ RestControllerpublic class HelloController {

@ RequestMapping ("/ hello") public String hello () {return "Hello Spring Boot!";}} @ RestController: the Controller of the Rest interface encapsulated for Spring Boot.

@ RequestMapping: same as SpringCloud.

Step 3: start Spring Boot

(1) Let's go back to the SpringbootApplication class, and then right-click run:

(2) IDEA does not need to manually configure the Tomcat server in the project, because Spring Boot has built-in Tomcat.

The prompt for the successful operation of the project can be seen that our program is running on port 8080.

(3) access the http://localhost:8080/hello/index address:

The above is how to quickly create a SpringBoot project. Have you learned the knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.