spring boot——通过maven创建一个spring boot项目

1、配置spring  boot的核心启动器；

2、添加starter模块；

 

 

首先maven的pom.xml文件内容如下：

<?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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>spring_boot</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>


    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

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


</project>

 

 

 

3、创建应用程序的App类（启动类）；

package org.example;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;


@SpringBootApplication
public class helloWorldApplication
{

    public static void main(String[] args)
    {

        SpringApplication.run(helloWorldApplication.class, args);

    }
}

 

 

 

 

 

 4、创建一个controller模块，并运行：

package org.example.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;


@Controller
public class HelloController
{

    /*
    http://localhost:8080/hello
     */
    @ResponseBody
    @RequestMapping("/hello")
    public String hello()
    {

        return "Hello World!____________china";
    }


    //http://localhost:8080/123
    @ResponseBody
    @RequestMapping("/123")
    public String home123()
    {
        return "中国您好";
    }



    //http://localhost:8080/1234
    @RequestMapping(value = "/1234",method = RequestMethod.GET)
    @ResponseBody
    public String home1234()
    {
        return "中国您好_123456";
    }
}

 

 

 

 

 

 

 

 

 启动tomcat：

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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pom.xml如下：

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.maven.demo</groupId>
  <artifactId>ch3_1</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>ch3_1 Maven Webapp</name>
  <url>http://maven.apache.org</url>
  
  <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.4.RELEASE</version>
  </parent>
  
  <dependencies>
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>  
    <finalName>ch3_1</finalName>
  </build>
</project>