maven deploy到nexus报错：Return code is: 401, ReasonPhrase:Unauthorized

提交到nexus时候报错：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project : Failed to deploy artifacts: Could not transfer artifact :jar:1.0 from/to releases (http://10.1.81.199:8081/nexus/content/repositories/releases/): Failed to transfer file: http://10.1.81.199:8081/nexus/content/repositories/releases/com/cs2c/security-management-client /1.0/-1.0.jar. Return code is: 401, ReasonPhrase:Unauthorized.

原来是没有配置认证。

maven目录conf的setting.xml里，

   
    releases  
    admin  
    admin123  
    
   
  snapshots  
  admin  
  admin123  
    
  

用户名和密码都是nexus的。再次deploy即可。
注意这里的id要和pom.xml里远程deploy的地址对应一致，我的pom.xml里配置：

  
      
          
            releases  
            Nexus Release Repository  
            http://10.1.81.199:8081/nexus/content/repositories/releases/  
          
          
            snapshots  
            Nexus Snapshot Repository  
            http://10.1.81.199:8081/nexus/content/repositories/snapshots/  
          
     

如果这里不配置，会报错：
报错：Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.5:deploy (default-deploy) on project git-demo: Deployment failed: repository element was not specified in the POM inside distributionManagement element or in -DaltDeploymentRepository=id::layout::url parameter