无法解析spring webmvc项目中的符号@配置

Question

我正在Intellij中创建一个Spring MVC项目，当我创建WebConfig类时，Intellij无法识别@Configuration注释，它会出现“无法解决符号”错误。即使我使用了“导入org.springframework.context.annotation.配置”，但它也无法识别“springFramework”。有人能帮我吗？

这是我的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>

    <groupId>academy.learnprogramming</groupId>
    <artifactId>Todo-list</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <properties>
        <logback.version>1.2.3</logback.version>
        <spring.version>5.0.5.RELEASE</spring.version>
        <java.version>8</java.version>
        <annotation-api.version>1.3.2</annotation-api.version>
        <servlet-api.version>3.1.0</servlet-api.version>
<!--        <lombok.version>1.18.12</lombok.version>-->
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-classic</artifactId>
                <version>${logback.version}</version>
            </dependency>

            <dependency>
                <groupId>javax.annotation</groupId>
                <artifactId>javax.annotation-api</artifactId>
                <version>${annotation-api.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>${spring.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>${spring.version}</version>
            </dependency>

            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>edge</version>
                <scope>system</scope>
                <systemPath>${basedir}/libs/lombok-1.18.12.jar</systemPath>
            </dependency>

            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
                <version>${servlet-api.version}</version>
                <scope>provided</scope>
            </dependency>

        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.7.0</version>
                <configuration>
                    <target>${java.version}</target>
                    <source>${java.version}</source>
                    <release>${java.version}</release>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.2.0</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.codehaus.cargo</groupId>
                <artifactId>cargo-maven2-plugin</artifactId>
                <version>1.6.7</version>
                <configuration>
                    <container>
                        <containerId>tomcat9x</containerId>
                        <type>embedded</type>
                    </container>
                    <configuration>
                        <properties>
                            <cargo.servlet.port>8081</cargo.servlet.port>
                        </properties>
                    </configuration>
                </configuration>
            </plugin>

        </plugins>
    </build>

</project>

Answer 1

@配置属于模块${spring.version}。确保它出现在依赖项中。由于在maven中依赖项可以是可传递的，因此请考虑使用：

mvn dependency:tree

查看哪个依赖项带来了所需的jar。

完成后，将maven项目重新导入intelliJ，以便IDE更新其内部索引