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发布自己的项目到maven中央仓库

Maven Central Account

1. 访问：https://central.sonatype.com/，点击右上角，根据提示注册账号
   
2. 构建User token ，用于访问中央仓库的API：
   • 点击右上角，查看账户
   • 点击Generate User Token，根据提示，构建个人访问令牌
   • 将获取的User Token xml代码配置到maven配置文件settings.xml 的servers属性中
     
     

POM.xml

配置需要发布的项目中的POM.xml文件

1. 配置编译项目的java版本

<properties><maven.compiler.source>11</maven.compiler.source><maven.compiler.target>11</maven.compiler.target><java.version>11</java.version>
</properties>

2. 配置项目名称、项目地址、打包方式

<name>xx xx</name>
<description>desc</description>
<url>https://github.com/xx/xx.xx.xx</url>
<packaging>pom</packaging>

3. 配置私库地址
   • 仓库地址分为正式版（releases repository）和预览版（snapshot repository）
   • id：在settings.xml中配置的server id
   • name：仓库名称
   • ur：对应的私库地址

<distributionManagement><repository><id>central</id><name>Maven Central</name><url>https://repo.maven.apache.org/maven2</url></repository>
</distributionManagement>

4. 配置开发者信息、项目开源许可证、代码仓库地址

<developers><developer><id>000000000</id><name>xxxxxxx</name><email>[e-mail]</email></developer></developers><licenses><license><name>MIT License</name><url>https://opensource.org/licenses/MIT</url><distribution>repo</distribution></license></licenses><scm><connection>https://github.com/xx/xx.xx.xx.git</connection><url>https://github.com/xx/xx.xx.xx</url></scm>

5. 配置打包插件

   • maven-source-plugin：源代码打包工具，中央仓库也会对源代码进行验证
   • maven-javadoc-plugin：javadoc文档打包工具，中央仓库会对javadoc经行验证，没有文档会验证失败

<build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-source-plugin</artifactId><version>${maven-source-plugin.version}</version><inherited>true</inherited><executions><execution><id>attach-sources</id><goals><goal>jar</goal></goals></execution></executions><configuration><excludeResources>true</excludeResources><useDefaultExcludes>true</useDefaultExcludes></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-javadoc-plugin</artifactId><version>${maven-javadoc-plugin.version}</version><inherited>true</inherited><executions><execution><id>bundle-sources</id><phase>package</phase><goals><goal>jar</goal></goals></execution></executions><configuration><encoding>UTF-8</encoding><charset>UTF-8</charset><show>protected</show><notree>true</notree><failOnError>false</failOnError><doclint>none</doclint></configuration></plugin></plugins>
</build>

7. 配置发布插件

   • central-publishing-maven-plugin：中央仓库发布插件
   • maven-deploy-plugin maven：maven发布插件，任何仓库都需要这个插件
   • maven-gpg-plugin：对发布的项目文件进行签名，中央仓库会对文件进行验签，GPG签名详见：https://central.sonatype.org/publish/requirements/gpg/

<build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-deploy-plugin</artifactId><version>${maven-deploy-plugin.version}</version></plugin><plugin><groupId>org.sonatype.central</groupId><artifactId>central-publishing-maven-plugin</artifactId><version>${central-publishing-maven-plugin.version}</version><extensions>true</extensions><configuration><publishingServerId>central</publishingServerId><autoPublish>true</autoPublish><waitUntil>published</waitUntil></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-gpg-plugin</artifactId><version>${maven-gpg-plugin.version}</version><executions><execution><id>sign-artifacts</id><phase>verify</phase><goals><goal>sign</goal></goals><configuration><keyname>288F5FE69C7B21AB</keyname><passphraseServerId>288F5FE69C7B21AB</passphraseServerId></configuration></execution></executions></plugin></plugins>
</build>

发布

1. 运行发布命令

mvn deploy

2. 等待maven central验证，如果发布状态不是published，那么就是发布失败，需要根据提示进行相应的更改
   

FAQ

1. Javadocs must be provided but not found in entries：因为中央仓库没找到Javadoc文档，所以需要打包Javadoc文档，java 1.8打包doc文档时，会报异常，建议提升至java11打包
2. Illegal reflective access by lombok.javac.apt.LombokProcessor xxx：java11打包Lombok时，需要查看Lombok和java版本是否支持