maven项目怎么导出可运行的jar包

<propreties>



<name>BYSJname>
<url>http://www.example.comurl>
propreties>

<propreties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<maven.compiler.source>1.8maven.compiler.source>
<maven.compiler.target>1.8maven.compiler.target>
propreties>


<propreties>


<dependencies>
    <dependency>
        <groupId>junitgroupId>
        <aftifacitId>junitaftifacitId>
        <version>4.8.2version>
        <scope>testscope>
    dependency>
    <dependency>
        <groupId>mysqlgroupId>
        <aftifacitId>mysql-connect-javaaftifacitId>
        <version>8.0.21version>
    dependency>
dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.pluginsgroupId>
                <aftifactId>maven-assembly-pluginaftifactId>
                <version>2.5.5version>
                <configuration>
                    <archive>
                        <manifest>
                            <maniClass>com.roadjava.AppmaniClass>
                        manifest>
                    archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependenciesdescriptorRef>
                    descriptorRefs>
                configuration>
                <executions>
                    <execution>
                        <id>one_jarid>
                        <phase>packagephase>
                        <goals>
                            <goal>singlegoal>
                        goals>
                    execution>
                executions>
            plugin>
        plugins>
    build>
propreties>

是需要什么插件吗，请问去哪里下载。。

需要在maven工程中加打包插件，直接在pom文件导入就行，然后在配置文件声明打包成jar包，然后在maven中点击打包即可打包

这不是pom在报错么

project标签呢？

点击这个就行

• 这篇文章讲的很详细，请看：记一次maven项目打包jar时出现的异常

可以参考我之前写的一篇文章：
https://blog.csdn.net/weixin_53036603/article/details/128211312