SpringBoot 入门

一、简介

SpringBoot是由Pivotal团队提供的全新框架，其设计目的是用来简化Spring应用的初始搭建以及开发过程。

与Spring对比:

SpringBoot特色：

 

二、入门程序开发

大致分三步：

• 创建SpringBoot项目
• 编写Controller类
• 运行Application类

具体步骤：

1、创建新模块，选择Spring Initializr，并配置模块相关基础信息：

2、选择当前模块需要使用的技术集：

Finish后即搭建完成。

3、入门程序的基础文件

pom.xml：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0modelVersion>
    <groupId>com.examplegroupId>
    <artifactId>springboot_01artifactId>
    <version>0.0.1-SNAPSHOTversion>
    <name>springboot_01name>
    <description>Demo project for Spring Bootdescription>
 
    <properties>
        <java.version>1.8java.version>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
        <spring-boot.version>2.6.7spring-boot.version>
    properties>
 
    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
 
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
    dependencies>
 
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-dependenciesartifactId>
                <version>${spring-boot.version}version>
                <type>pomtype>
                <scope>importscope>
            dependency>
        dependencies>
    dependencyManagement>
 
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.pluginsgroupId>
                <artifactId>maven-compiler-pluginartifactId>
                <version>3.8.1version>
                <configuration>
                    <source>1.8source>
                    <target>1.8target>
                    <encoding>UTF-8encoding>
                configuration>
            plugin>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
                <version>2.6.7version>
                <configuration>
                    <mainClass>com.kvno.Springboot01ApplicationmainClass>
                configuration>
                <executions>
                    <execution>
                        <id>repackageid>
                        <goals>
                            <goal>repackagegoal>
                        goals>
                    execution>
                executions>
            plugin>
        plugins>
    build>
 
project>

Application类：

@SpringBootApplication
public class Springboot01Application {
 
    public static void main(String[] args) {
        SpringApplication.run(Springboot01Application.class, args);
    }
 
}

4、编写Controller类：

//Rest模式 (Restful风格)
@RestController //@Controller + @ResponseBody
@RequestMapping("/books")
public class BookController {
 
    @GetMapping
    public String getById() {
        System.out.println("springboot is running...");
        return "springboot is running...";
    }
 
}

5、运行Application类

运行成功：