Maven父子工程install编译问题

谁借莪１个温暖的怀抱￠ 2023-07-17 04:46 1阅读 0赞

### Maven父子工程install编译问题 ###

*   *  异常信息
     *  异常分析
     *  异常解决
     *  总结

## 异常信息 ##

[WARNING] The requested profile "nexus" could not be activated because it does not exist.
    [ERROR] Failed to execute goal on project NettyDemos: Could not resolve dependencies for project com.crazymakercircle:NettyDemos:jar:1.0-SNAPSHOT: Failed to collect dependencies at com.crazymakercircle:chatcommon:jar:1.0-SNAPSHOT: Failed to read artifact descriptor for com.crazymakercircle:chatcommon:jar:1.0-SNAPSHOT: Could not find artifact com.crazymakercircle:crazyCircleDemos:pom:1.0-SNAPSHOT -> [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
    
    Process finished with exit code 1

## 异常分析 ##

由于项目是Maven模块化工程，子模块相互依赖，编译子工程 `NettyDemos`时，由于依赖的工程`chatcommon`没有`install`进本地仓库或远程私服，所以出现无法找到依赖异常。简单的来说就是`A`依赖`B`，但是`B`在本地仓库或远程私服没有，所以出现异常。

## 异常解决 ##

知道原因了，问题解决起来就很方便了嘛。直接`install`一下缺失的依赖工程即可。但是细心的小伙伴很快就发现。哎，怎么`chatcommon(B) install`成功之后，再`install NettyDemos(A)`仍然出现上面的异常呢？这是因为父工程没有清理。所以要想`install`成功，需要先运行父工程的`maven clean`。之后再在子工程运行`maven install`即可。

## 总结 ##

`Maven`工程最好新建一个父工程，便于开发和打包。Java小白一个，如果有哪里解释的不对，还请多多指教。