我也遇到這個問題了。OMG指定版本是什么意思。

OMG 指定了version就可以了 是新版IDEA或新版plugin的原因么？？？

<?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>com.kofzhoubiwen</groupId>
???<artifactId>girl</artifactId>
???<version>0.0.1-SNAPSHOT</version>
???<packaging>jar</packaging>

???<name>girl</name>
???<description>Demo?project?for?Spring?Boot</description>

???<parent>
???????<groupId>org.springframework.boot</groupId>
???????<artifactId>spring-boot-starter-parent</artifactId>
???????<version>1.4.4.RELEASE</version>
???????<relativePath/>?<!--?lookup?parent?from?repository?-->
???</parent>

???<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-thymeleaf</artifactId>
???????</dependency>

???????<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>

auto-import設置下試試