Maven无法下载jar依赖项，并且未在libs文件夹下显示Maven Dependency

Question

我通过选择org.apache.maven.archtypes maven.archtype.webapp创建了新的maven项目。

我执行了这个命令，

• pom右键单击maven clean
• pom右键单击maven install。
• 我查看了maven用户设置文件
• 项目右键单击maven update。

但maven依赖库未添加到库文件夹中虽然我已经获取了构建成功消息。

[INFO] Scanning for projects...
<p> 
[INFO] Using the builder org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder with a thread count of 1
[INFO] BUILD SUCCESS
[INFO] Total time: 2.248 s
[INFO] Finished at: 2018-06-07T09:40:57+03:00
[INFO] Final Memory: 8M/20M

添加了我的pom文件。 E.g dependecy mvnrepository.com/artifact/com.fasterxml.jackson.datatype/jackson-datatype -

<?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/4.0.0http://maven.apache. rg/xsd/maven-4.0.0.xsd">

    <groupId>test</groupId>
    <artifactId>maven.test</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>maven.test Maven Webapp</name>
    <!-- FIXME change it to the project's website -->
    <url>http://www.example.com</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
        <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>

        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.datatype/jackson-datatype-jsr310 -->
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jsr310</artifactId>
            <version>2.9.5</version>
        </dependency>

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.16</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
</project>

这是故障屏幕截图

我的临时解决方案：

但新的java项目并转换为maven项目，这样就可以实现这种方式显示maven依赖