SpringBoot如何编写Springboot示例

实现一个简单的SpringBoot示例

首先是pom文件

<?xml version="1.0" encoding="UTF-8"?>
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <!--模块版本-->
    <modelVersion>4.0.0</modelVersion>

    <!--包名-->
    <groupId>cn.studio</groupId>
    <!--模块名称-->
    <artifactId>springboot-01</artifactId>
    <!---->
    <version>0.0.1-SNAPSHOT</version>
    <!--以jar的形式-->
    <packaging>jar</packaging>

    <name>springboot-01</name>
    <description>Demo project for Spring Boot</description>

    <!--spring-boot-starter-parent：包含了大量配置好的依赖管理，
    在自己项目添加这些依赖的时候不需要写<version>版本号-->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <!--配置的jdk版本是1.8-->
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!-- 可以实现热部署 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>


        <!--更换SpringBoot中默认的web容器为jetty-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!--使用jetty服务器，替换tomcat-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!--插件-->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

另外在application.properties中可以修改端口号

server.port=9090

编写一个controller

package cn.studio;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController  //可以是返回json格式的
public class Springboot01Application {

    //在页面上的访问路径
    @RequestMapping("/hello")
    public Object hello(){
        //返回的内容
        return "hello,world，哈哈哈";
    }

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

测试的时候执行main方法

也可以是使用命令 telnet localhost 端口号