怎么把JAR发布到maven中央仓库

project   选择community support -open source....
issue    选择new project
summary   填写一些项目简短描述
description 填写项目的描述
group id   这个最重要了, 要与你的工程pom文件里的顶级group id 一致, 而且这个是不能乱填的, 一般来说, 是你自己的域名反写
Project URL 进入到你项目的url, 假如你的项目在github上, 先进到你的项目中, 然后复制地址栏上的地址填进去就可以
SCM url   同上, 但是这个url要填写你的git资源下载地址, 就是项目右侧的clone&download那个按钮弹出来的地址
Username(s) 用户名
Already Synced to Central 默认选NO就可以, 因为暂时我们还不需要同步到中央仓库

group id对应的域名, 会通过以下几种方式验证这个域名是不是你的

Central OSSRH updated OSSRH-xxxxx:
----------------------------------
  Status: Waiting for Response (was: Open)

Do you own the domain gomyck.com? If so, please verify ownership via one of the following methods:
* Add a TXT record to your DNS referencing this issue (Fastest)
* Setup a redirect to your Github page (if it does not already exist)
* Send an email to central@sonatype.com referencing this issue from a gomyck.com email address

If you do not own this domain, please read:
http://central.sonatype.org/pages/choosing-your-coordinates.html
You may also choose a groupId that reflects your project hosting, in this case, something like 

com.gomyck has been prepared, now user(s) gomyck,mzxc can:

Deploy snapshot artifacts into repository https://oss.sonatype.org/content/repositories/snapshots
Deploy release artifacts into the staging repository https://oss.sonatype.org/service/local/staging/deploy/maven2
Promote staged artifacts into repository 'Releases'
Download snapshot and release artifacts from group https://oss.sonatype.org/content/groups/public
Download snapshot, release and staged artifacts from staging group https://oss.sonatype.org/content/groups/staging
please comment on this ticket when you promoted your first release, thanks

$ gpg --gen-key
#按照提示输入信息, 在输入密码的时候, 如果嫌麻烦就直接摁回车就可以, 这样秘钥就没有密码保护了, 密码保护只有在你的私钥泄露的时候才有用, 其他时候没用

$ gpg --list-keys
#这个指令会显示你的秘钥环, 类似于下面这样
#---------------------------------
# pub  rsa4096 2018-09-25 [SC] 
#  EABB59A7BFXXXXXX46604F95ED1503AA8CDxxxx (这个才是秘钥ID)
# uid      [ 绝对 ] xxx (zhushi) <xxx@163.com>
# sub  rsa4096 2018-09-25 [E]

$ gpg --keyserver hkp://pool.sks-keyservers.net --send-keys 秘钥ID
#发送你的公钥到秘钥仓库, 以后你的jar会使用私钥签名, maven中央仓库会去几个指定的秘钥仓库去找公钥来验证这个签名, 如果不上传是不能通过审核的

$ gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys 秘钥ID
#验证你的公钥是否上传成功, 如果返回结果是 **未改变, 那就是成功了

<groupId>com.gomyck</groupId>
<artifactId>gomyck-quickdev</artifactId>
<packaging>pom</packaging>
<version>1.1.0-SNAPSHOT</version>
<name>gomyck-quickdev</name>
<url>http://www.gomyck.com</url>
<description>gomyck 快速开发平台</description>
<developers>
  <developer>
    <id>gomyck</id>
    <name>haoy</name>
    <url>www.gomyck.com</url>
    <email>hao474798383@163.com</email>
  </developer>
</developers>

<licenses>
  <license>
    <name>The Apache Software License, Version 2.0</name>
    <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
  </license>
</licenses>

<scm>
  <connection>scm:git:git@github.com:mzxc/gomyck-fastdfs-spring-boot-starter.git</connection>
  <developerConnection>scm:git:git@github.com:mzxc/gomyck-fastdfs-spring-boot-starter.git</developerConnection>
  <url>git@github.com:mzxc/gomyck-fastdfs-spring-boot-starter.git</url>
</scm>

<build>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-source-plugin</artifactId>
      <version>3.8.0</version>
      <configuration>
        <attach>true</attach>
      </configuration>
      <executions>
        <execution>
          <phase>compile</phase>
          <goals>
            <goal>jar</goal>
          </goals>
        </execution>
      </executions>
    </plugin>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-gpg-plugin</artifactId>
      <version>1.6</version>
      <executions>
        <execution>
          <phase>verify</phase>
          <goals>
            <goal>sign</goal>
          </goals>
        </execution>
      </executions>
      <configuration>
        <!-- 你的秘钥ID -->
        <keyname>${gpg.keyname}</keyname>
        <passphraseServerId>${gpg.keyname}</passphraseServerId>
      </configuration>
    </plugin>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-javadoc-plugin</artifactId>
      <version>3.1.1</version>
      <executions>
        <execution>
          <phase>package</phase>
          <goals>
            <goal>jar</goal>
          </goals>
        </execution>
      </executions>
    </plugin>
  </plugins>
</build>

<distributionManagement>
  <repository>
    <id>sonatype-nexus-staging</id>
    <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
  </repository>
  <snapshotRepository>
    <id>sonatype-nexus-snapshots</id>
    <url>https://oss.sonatype.org/content/repositories/snapshots/</url>
  </snapshotRepository>
</distributionManagement>

<server>
  <id>sonatype-nexus-snapshots</id>
  <username>sonatype账号</username>
  <password>sonatype密码</password>
</server>
<server>
  <id>sonatype-nexus-staging</id>
  <username>sonatype账号</username>
  <password>sonatype密码</password>
</server>
<profiles>
 <profile>
   <activation>
    <activeByDefault>true</activeByDefault>
   </activation>
   <properties>
    <gpg.keyname>你的秘钥 ID</gpg.keyname>
   </properties>
 </profile>
</profiles>