Build a simple springboot environment by yourself

What is Springboot?

Spring boot is commonly known as microservices. Spring Boot is a new framework provided by the pivotal team designed to simplify the initial setup and development of new spring applications. The framework uses a specific approach to configuration, which eliminates the need for developers to define boilerplate configurations. In this way, Spring boot is committed to becoming a leader in the burgeoning field of rapid application development (rapid application development).

1, create a new MAVEN project

Select Workspace First

Click "Next"

Direct default, then click "Next"

Fill in the GroupID etc. ~ then "Finish", to the end of the whole new project here.

2, introduce the relevant jar package

  1  <parent> 2  <groupid>or G.springframework.boot</groupid> 3  <artifactId> Spring-boot-starter-parent</artifactid> 4  <version>1.5.8.release </version> 5  </parent> 6  <            Dependencies> 7  <dependency> 8  <groupid>org.springframework.boot</groupid> 9  <artif Actid>spring-boot-starter-web</artifactid>10  </dependency>< Span style= "COLOR: #008080" >11  </dependencies> 

Here it appears that we only quoted 2 jar packages that actually contain a lot of things, like Spring-boot-starter-web we opened through a zipped package

Looking at the Pom file inside can see the following, it refers to a lot of jars like spring web, and the JSON jar package is included inside the

1<dependencies>2<dependency>3<groupId>org.springframework.boot</groupId>4<artifactId>spring-boot-starter</artifactId>5</dependency>6<dependency>7<groupId>org.springframework.boot</groupId>8<artifactId>spring-boot-starter-tomcat</artifactId>9</dependency>Ten<dependency> One<groupId>org.hibernate</groupId> A<artifactId>hibernate-validator</artifactId> -</dependency> -<dependency> the<groupId>com.fasterxml.jackson.core</groupId> -<artifactId>jackson-databind</artifactId> -</dependency> -<dependency> +<groupId>org.springframework</groupId> -<artifactId>spring-web</artifactId> +</dependency> A<dependency> at<groupId>org.springframework</groupId> -<artifactId>spring-webmvc</artifactId> -</dependency> -</dependencies>

3, writing the Program entry class

1  PackageCom.springbooot2;2 3 Importorg.springframework.boot.SpringApplication;4 Importorg.springframework.boot.autoconfigure.SpringBootApplication;5 6 /**7 * Hello world!8  *9  */Ten @SpringBootApplication One  Public classApp A { -      -      Public Static voidMain (string[] args)throwsException { theSpringapplication.run (App.class, args); -     } -}

Here, @SpringBootApplication is to let the spring scan identify, tell him I am a program entry class.

4, write the Request response class

1  PackageCom.springbooot2;2 3 4 ImportOrg.springframework.stereotype.Controller;5 Importorg.springframework.web.bind.annotation.RequestMapping;6 ImportOrg.springframework.web.bind.annotation.ResponseBody;7  8 @Controller9  Public classFristblood {Ten@RequestMapping ("/fristblood") One @ResponseBody A      PublicString Hello () { -         return"Dont worry,be happy! <br/><br/> <input type=\ "submit\" value=\ "Ok\"/> "; -     } the}

Here's the explanation.

@Controller request processing controller class.

@RequestMapping familiar with spring should be no stranger, this is something of spring, url mapping.

@ResponseBody response method, our response information will be automatically converted to JSON information returned to the foreground page

By the end of the entire code, it was a lot easier to build a framework like SSH or SSM than we did before, if we had the kind that only needed to send a message. or simple service, with Springboot can be said very convenient.

5, test the code

Start the program, open the browser, type:http://localhost:8080/FristBlood

Request page response results such as

Build a simple springboot environment by yourself