mvn执行deploy时报错问题记录

1、deploy时报错401

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.8.2:deploy (default-deploy) on project riskcontrol-alone: Failed to deploy artifacts: Could not transfer artifact com.hexin:riskcontrol-alone:pom:3.0.5 from/to nexus-releases (http://nexus.fgt.com/repository/maven-releases/): Failed to transfer file http://nexus.fgt.com/repository/maven-releases/com/hexin/riskcontrol-alone/3.0.5/riskcontrol-alone-3.0.5.pom with status code 401

这个错误是认证失败导致，大概有几个原因：

本地settings.xml文件没有指定用户名和密码
pom.xml文件和settings.xml文件中的ID没有对应

settings.xml文件中的中的配置要配置正确

&lt;servers>
    &lt;server>
      &lt;id>local-jar&lt;/id>
      &lt;username>admin&lt;/username>
      &lt;password>admin123&lt;/password>
    &lt;/server>
    &lt;server>
      &lt;id>nexus-release&lt;/id>
      &lt;username>admin&lt;/username>
      &lt;password>admin123&lt;/password>
    &lt;/server>
    &lt;server>
      &lt;id>nexus-snapshots&lt;/id>
      &lt;username>admin&lt;/username>
      &lt;password>admin123&lt;/password>
  &lt;/server>
&lt;/servers>

pom.xml文件中的ID要对应

pom.xml文件中的配置：
        &lt;distributionManagement>
                &lt;repository>
                        &lt;id>nexus-releases&lt;/id>   #可以看到这里和settings.xml文件中的id没有一致，多了一个s
                        &lt;name>Nexus Release Repository&lt;/name>
                        &lt;url>http://nexus.fgt.com/repository/maven-releases/&lt;/url>
                &lt;/repository>
                &lt;snapshotRepository>
                        &lt;id>nexus-snapshots&lt;/id>
                        &lt;name>Nexus Snapshot Repository&lt;/name>
                        &lt;url>http://nexus.fgt.com/repository/maven-snapshots/&lt;/url>
                &lt;/snapshotRepository>
        &lt;/distributionManagement>

        &lt;repositories>
                &lt;repository>
                        &lt;id>local-jar&lt;/id>
                        &lt;name>Nexus&lt;/name>
                        &lt;url>http://nexus.fgt.com/repository/maven-public/&lt;/url>
                        &lt;releases>
                                &lt;enabled>true&lt;/enabled>
                        &lt;/releases>
                        &lt;snapshots>
                                &lt;enabled>true&lt;/enabled>
                        &lt;/snapshots>
                &lt;/repository>
        &lt;/repositories>

2、deploy过程中返回400

报错信息如下：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.8.2:deploy (default-deploy) on project riskcontrol-alone: Failed to deploy artifacts: Could not transfer artifact com.hexin:riskcontrol-alone:pom:3.0.5 from/to nexus-release (http://nexus.fgt.com/repository/maven-releases/): Failed to transfer file http://nexus.fgt.com/repository/maven-releases/com/hexin/riskcontrol-alone/3.0.5/riskcontrol-alone-3.0.5.pom with status code 400

一般返回400错误是由于mvn deploy已存在的包的时候重复上传，nexus release默认是不能重复部署的

解决办法就是修改nexus私服的release配置