Failure to transfer--springCloud和SpringBoot之一踩坑记录

解决办法：

方法1：直接搜索jar.lastUpdate然后删除，再mavenUpdate

方法2：maven仓库中打开cmd命令行输入：for /r %i in (*.lastUpdated) do del %i；然后再mavenUpdate
方法3：再Maven的setting.xml文件中修改mirro

        nexus-aliyun
        Nexus aliyun
        http://maven.aliyun.com/nexus/content/groups/public/
        central

错误实例:

在头文件里面的出错，截取的一部分提示信息：
**

resolution will not be reattempted until the update interval of central has elapsed or updates are forced.

**
翻译：在超过中心的更新间隔或强制更新之前，不会重新尝试解析。
就是说有jar包了，不能更新。

那么问题来了，既然有了不更新，用原来的就完事了，为什么还报错。
解决办法： 1.找到错误的jar包位置，删除
2.将对应的项目update，即可

错误描述：
Failure to transfer org.springframework:spring-expression:jar:4.3.13.RELEASE from 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. Original error: Could not transfer artifact
org.springframework:spring-expression:jar:4.3.13.RELEASE from/to central (https://repo.maven.apache.org/maven2): The operation was cancelled.
org.eclipse.aether.transfer.ArtifactTransferException: Failure to transfer org.springframework:spring-expression:jar:4.3.13.RELEASE from 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. Original error: Could not transfer artifact org.springframework:spring-expression:jar:4.3.13.RELEASE from/to central (https://
repo.maven.apache.org/maven2): The operation was cancelled.

来自以上代码的错误提示：org.springframework:spring-expression:jar:4.3.13.RELEASE

等待下载：
又出Failure to transfer。。。。