mvn build 报错 [ERROR] Failed to execute goal on project demo: Could not resolve dependencies

Java springboot 项目执行 mvn clean package -Dmaven.test.skip=true

报错

Downloaded from my-nexus: http://192.168.43.11:8081/nexus/repository/maven-public/org/springframework/spring-test/5.2.5.RELEASE/spring-test-5.2.5.RELEASE.jar (685 kB at 11 kB/s)
Downloaded from my-nexus: http://192.168.43.11:8081/nexus/repository/maven-public/org/assertj/assertj-core/3.13.2/assertj-core-3.13.2.jar (4.5 MB at 70 kB/s)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  03:05 min
[INFO] Finished at: 2020-04-02T08:32:12Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project demo: Could not resolve dependencies for project com.example:demo:jar:0.0.1-SNAPSHOT: The following artifacts could not be resolved: com.jayway.jsonpath:json-path:jar:2.4.0, net.minidev:json-smart:jar:2.3, net.minidev:accessors-smart:jar:1.2, jakarta.xml.bind:jakarta.xml.bind-api:jar:2.3.3, jakarta.activation:jakarta.activation-api:jar:1.2.2: Failure to find com.jayway.jsonpath:json-path:jar:2.4.0 in http://192.168.43.11:8081/nexus/repository/maven-public/ was cached in the local repository, resolution will not be reattempted until the update interval of my-nexus has elapsed or updates are forced -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[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 read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException

一开始以为是依赖包没有下载下来，查看本地的仓库，发现包都是存在的，仔细看报错信息Could not resolve dependencies指的是无法解析依赖包，难道是下的包不完整？
将本地包的大小和实际的相比较，发现果然是小很多。

try1

删除本地相关的包，重新执行mvn clean package -Dmaven.test.skip=true，然并卵，重试两三次都不行！！！

突然想到是不是私有仓库到*仓库下载的包就是损坏的（我的maven setting.xml文件配置的是从私有仓库nuxes获取包）

接着登录私有nexus私有仓库，检查发现nexus配置的是直接从*仓库https://repo1.maven.org/maven2/拉取的包，并没有配置国内的镜像，这就可能导致在下载的包不完整

try2

step1：给nexus配上aliyun仓库，参考(或自行百度)

https://blog.csdn.net/lishuoboy/article/details/99946230

step2：根据报错中列出无法解析的包，删除本地和nexus仓库中损坏的包（注意不要删错了公司内部的）
step3: 重新执行编译命令，我这里是mvn clean package -Dmaven.test.skip=true

ojbk

Downloaded from my-nexus: http://192.168.43.11:8081/nexus/repository/maven-public/org/ow2/asm/asm-util/7.2-beta/asm-util-7.2-beta.jar (81 kB at 2.6 kB/s)
Downloaded from my-nexus: http://192.168.43.11:8081/nexus/repository/maven-public/org/vafer/jdependency/2.3.0/jdependency-2.3.0.jar (169 kB at 5.1 kB/s)
Downloaded from my-nexus: http://192.168.43.11:8081/nexus/repository/maven-public/com/google/guava/guava/19.0/guava-19.0.jar (2.3 MB at 55 kB/s)
[INFO] Replacing main artifact with repackaged archive
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  07:24 min
[INFO] Finished at: 2020-04-02T08:45:04Z
[INFO] ------------------------------------------------------------------------

总结

遇到这种问题，首先检查本地仓库的包是否完整的，有时候可能是自己网络的问题，导致拉的包是损坏的，有时可能时私服上的包就是损坏的，要逐步排查