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Could not resolve dependencies for project com.foreveross:gaei-syncpm:jar:0.0.1-SNAPSHOT: Failure to find com.oracle.jdbc:ojdbc7:jar:11.2.0.4 in https://repo.maven.apache.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?
大體意思是jar包沒有下載完整，不過也要分兩種情況：1.? 可能就是本地沒有下載完整，這里的原因可能第一次下載由于網絡原因不成功，之后maven也沒在嘗試。
將本地Maven倉庫中已下載的相關依賴 Jar 刪掉，從新 build update 工程即可!
引用
This is often a false positive. Imagine you have a connection issue lasting only 5 seconds when Maven 3 tries to download a dependency, it will mark this dependency as unavailable for a delay. And thus will prevent you from replaying the build command even if the network issue is fixed.?
Just run the command with the -U option. Even if its description applies to snapshots, it seems to also fix the error if it occurred on a release.?
Example: mvn -U clean package
This is often a false positive. Imagine you have a connection issue lasting only 5 seconds when Maven 3 tries to download a dependency, it will mark this dependency as unavailable for a delay. And thus will prevent you from replaying the build command even if the network issue is fixed.?
Just run the command with the -U option. Even if its description applies to snapshots, it seems to also fix the error if it occurred on a release.?
Example: mvn -U clean package
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此外，我們可以在setting.xml中增加updatePolicy策略
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setting.xml指導
http://maven.apache.org/ref/3.3.1/maven-settings/settings.html
在setting.xml的schema中有這樣一個描述
schema
http://maven.apache.org/xsd/settings-1.0.0.xsd
2.? 另一種情況就是我們依賴的nexus也沒有下載完整，這時候可能是配置的中央倉庫代理倉庫根本就不存在此jar，或者需要在第三方倉庫中才能找到，此時我們應該嘗試檢查和配置代理倉庫。
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轉自：https://blog.csdn.net/vtopqx/article/details/73457539
https://blog.csdn.net/shierqu/article/details/44787025
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