mvn deploy 报出400错误_could not transfer artifact status 400

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.532 s
[INFO] Finished at: 2014-12-29T19:27:43+08:00
[INFO] Final Memory: 9M/22M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:
deploy (default-deploy) on project d4: Failed to deploy artifacts: Could not tra
nsfer artifact d3:d4:jar:0.0.1-20141229.112743-1 from/to loiy_snapshots (http://
127.0.0.1:8081/nexus/content/repositories/loiy_snapshots/): Failed to transfer f
ile: http://127.0.0.1:8081/nexus/content/repositories/loiy_snapshots/d3/d4/0.0.1
-SNAPSHOT/d4-0.0.1-20141229.112743-1.jar. Return code is: 400, ReasonPhrase: Bad
 Request. -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
ch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionE
xception

Return code is: 400
400错误的含义是“错误的请求”，在这里的原因是往往是没有部署到nexus的仓库中。

最后发现，本地仓库loiy_snapshots的policy选成Release。