emp 。。 epo except resp esp failure XML could

Multiple annotations found at this line:

- ArtifactTransferException: Failure to transfer com.fasterxml.jackson.core:jackson-databind:jar:2.9.0.pr3 from http://
repo1.maven.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of
central has elapsed or updates are forced. Original error: Could not transfer artifact com.fasterxml.jackson.core:jackson-

databind:jar:2.9.0.pr3 from/to central (http://repo1.maven.org/maven2): No response received after 60000
- Missing artifact com.fasterxml.jackson.core:jackson-databind:jar:2.9.0.pr3

其實已經說的很清楚了。

因為 那個 2.9.pr3.jar 已經緩存在了本地， 所以下載（transfer ）失敗。 只有過了指定的時間間隔， 或 強制更新， 才會去重新 解析。

—— resolution will not be reattempted until the update interval of

central has elapsed or updates are forced

那麽， 把 jackson-databind-2.9.0.pr3.jar.lastUpdated 刪除後， maven 就會去重新下載。

修改 pom， （增加了一空行）， 還是不行。。。

Multiple annotations found at this line:
- Missing artifact com.fasterxml.jackson.core:jackson-databind:jar:2.9.0.pr3
- ArtifactTransferException: Could not transfer artifact com.fasterxml.jackson.core:jackson-databind:jar:2.9.0.pr3

from/to central (http://repo1.maven.org/maven2): No response received after 60000

手動將jackson-databind-2.9.0.pr3.jar 下載到本地， 放到 mvn 倉庫中， 再次修改 pom， ok了！

maven 下載jar失敗： resolution will not be reattempted until the update interval of central has elapsed or updates are forced