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intellij idea中无法解析spring注解

[英]Cannot resolve spring annotations in intellij idea

我下载了 jdk 11 和 maven 3.6.3 和 Itellj Idea 并导入了一个项目:

mvn clean install 

但我总是得到这个错误:

Cannot resolve symbol 'SpringBootApplication'

pom.xml:

<?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>com.xxx.xxx.sofa</groupId>
        <artifactId>sofa-spring-boot-pom-parent</artifactId>
        <version>1.0.10</version>
    </parent>



    <properties>
        <java.version>11</java.version>
        <spring-boot.version>2.3.2.RELEASE</spring-boot.version>
        <postgres.version>42.2.14</postgres.version>
        <h2.version>1.4.200</h2.version>
        <swagger.version>2.9.2</swagger.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</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>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>${swagger.version}</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>${swagger.version}</version>
        </dependency>

        <!-- DATABASE -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <scope>runtime</scope>
        </dependency>

        <!-- OPTIONAL TOOLS -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
    </dependencies>

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

</project>

我试图删除.idea文件夹或“无效缓存并重新启动”,但第一种方法和第二种方法都没有解决问题。 有一个类似的问题Cannot resolve symbol SpringApplication但答案没有解决我的问题。 我该如何解决?

运行以下命令为我解决了这个问题:

mvn idea:idea

我通过降级 maven 版本解决了这个问题。

您似乎使用 Spring Boot version 1.0.1,@SpringBootApplication annotation 在 1.2 中引入

您没有使用 SpringBoot parent 而是您自己的,您需要添加依赖项:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-dependencies</artifactId>
    <version>${spring-boot.version}</version>
    <type>pom</type>
    <scope>import</scope>
</dependency>

你需要添加依赖

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

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