Encounter "401 error" during "mvn-deploy"

[lulynn_2008]

Hi All,

I was uploading pig artifacts to my private repository. I assume I just need to 
generate ~/.m2/settings.xml and run target mvn-deploy. Here is one server 
seting in settings.xml:
    <server>
      <id>private-open-source-components-snapshots</id>
      <username>deployment</username>
      <password>
        
{Q77+1Rnh7XUHUVXiCTPIBAu5VhTDyitH9ow530M0n58WpIqJAN11XYqm4HwAKKJgCPT9TjQPn6FurIeehQzqd4X+HYi9/FWnxL9P9BVD9Vs//B+6Cn3fdB4O5e8GgEvY}
      </password>
    </server>

Before running "mvn-deploy". I also update "asfrepo" and "asfsnapshotrepo" to 
my local private repository.
    <property name="asfrepo" value="http://private:8081/nexus"/>
    <property name="asfsnapshotrepo" 
value="${asfrepo}/content/repositories/private-open-source-components-snapshots"/>

But I alwayse failed with "401 error" like following.
/root/ff/git/pig/build.xml:1285: Error deploying artifact 
'org.apache.pig:pig:jar': Error deploying artifact: Failed to transfer file: 
http://private:8081/nexus/content/repositories/private-open-source-components-snapshots/org/apache/pig/pig/0.13.1-SNAPSHOT/pig-0.13.1-20140814.080436-1.jar.
 Return code is: 401

With the same settings.xml, I can upload artifacts generated via "mvn", like 
avro. So maybe the problem is not at setting.xml. Is there any step I missed? 
Please give your suggestions.

Thanks
FangFang