spring boot 项目运行报错

Question

使用IDEA创建的spring boot项目，目前是空项目，运行DemoApplication文件的时候，出现如下错误：

2019-05-16 17:36:41.215 INFO 22276 --- [ main] springboot02.demo.DemoApplication : Starting DemoApplication on lijinxiadeMacBook-Pro.local with PID 22276 (/data/yx/javacode/spring-boot-samples-master/demo/target/classes started by lijinxia in /data/yx/javacode/spring-boot-samples-master/demo)
2019-05-16 17:36:41.217 INFO 22276 --- [ main] springboot02.demo.DemoApplication : No active profile set, falling back to default profiles: default
2019-05-16 17:36:42.118 INFO 22276 --- [ main] springboot02.demo.DemoApplication : Started DemoApplication in 16.227 seconds (JVM running for 21.986)

application.properties 文件是空的
pom.xml文件的内容：
<?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>
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.5.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>springboot02</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>

<properties>
    <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>
</dependencies>

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

</project>

那这样看的话，是哪里出了问题那？

Answer 1

原来是网路不好，在下载包的时候没下载完全，用mvn dependency:purge-local-repository
重新下载了，再运行就可以了

Answer 2

No active profile set, falling back to default profiles: default
这行么？？这行是INFO级别，不是错误。