你可以改一下配置，idea中右擊file，選擇setting，找到maven，點擊打開有importing選項，勾選import maven project automatically，當以有新的依賴加入，會自動導入需要的東西

建議你在eclipse里面下一個spring的插件，這樣就可以查看pom.xml文件里面有沒有配置spring-boot-configuration-processor?

<?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.xudemo</groupId>
???<artifactId>spring-boot</artifactId>
???<version>0.0.1-SNAPSHOT</version>
???<packaging>jar</packaging>

???<name>spring-boot</name>
???<description>Demo?project?for?Spring?Boot</description>

???<parent>
??????<groupId>org.springframework.boot</groupId>
??????<artifactId>spring-boot-starter-parent</artifactId>
??????<version>1.5.6.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-web</artifactId>
??????</dependency>

??????<dependency>
?????????<groupId>org.springframework.boot</groupId>
?????????<artifactId>spring-boot-starter-test</artifactId>
?????????<scope>test</scope>
??????</dependency>
??????<dependency>
?????????<groupId>org.springframework.boot</groupId>
?????????<artifactId>spring-boot-starter-thymeleaf</artifactId>
??????</dependency>
??????<dependency>
?????????<groupId>org.springframework.boot</groupId>
?????????<artifactId>spring-boot-starter-data-jpa</artifactId>
??????</dependency>
??????<dependency>
?????????<groupId>mysql</groupId>
?????????<artifactId>mysql-connector-java</artifactId>
??????</dependency>
???</dependencies>

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


</project>

沒有 我跟你貼一下我的pom.xml