我正在一个Maven项目中工作，并尝试在pom.xml中添加最新版本的mysql-connector-java/5.1.38依赖项。无法读取mysql：mysql-connector-java的工件描述符，并且maven dependecies文件夹中没有mysql-connector jar。我还添加了旧版本的mysql-connector-java/5.1.10和mysql-connector-java/5.1.36版本，它工作正常，没有任何异常。
pom.xml在最新版本的mysql-connector-java/5.1.38中存在以下问题

ArtifactDescriptorException: Failed to read artifact descriptor for mysql:mysql-connector-java:jar:5.1.38: ArtifactResolutionException: Failure to transfer mysql:mysql-connector-java:pom:5.1.38 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact mysql:mysql-connector-java:pom:5.1.38 from/to central (http://repo.maven.apache.org/maven2): null to http://repo.maven.apache.org/maven2/mysql/mysql-connector-java/5.1.38/mysql-connector-java-5.1.38.pom

我的pom.xml看起来像

<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.java.spring</groupId>
  <artifactId>practice</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>practice</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>4.2.4.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>4.2.4.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.2.4.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.38</version>
    </dependency>
  </dependencies>
  <build>
    <pluginManagement>
        <plugins>
            <!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the Maven build itself.-->
            <plugin>
                <groupId>org.eclipse.m2e</groupId>
                <artifactId>lifecycle-mapping</artifactId>
                <version>1.0.0</version>
                <configuration>
                    <lifecycleMappingMetadata>
                        <pluginExecutions>
                            <pluginExecution>
                                <pluginExecutionFilter>
                                    <groupId>
                                        org.apache.maven.plugins
                                    </groupId>
                                    <artifactId>
                                        maven-compiler-plugin
                                    </artifactId>
                                    <versionRange>
                                        [2.3.2,)
                                    </versionRange>
                                    <goals>
                                        <goal>compile</goal>
                                    </goals>
                                </pluginExecutionFilter>
                                <action>
                                    <ignore></ignore>
                                </action>
                            </pluginExecution>
                        </pluginExecutions>
                    </lifecycleMappingMetadata>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
  </build>
</project>

我也清理了我的项目一次，并更新它，但添加依赖关系后，同样的错误发生。那么我该如何解决这个问题？