一、问题描述
如下。相信大家平时在尝试自己搭建项目后执行 maven install 命令的时候偶尔会碰到这种问题，自己已经将<packing>为jar类型的模块已经安装到本地了，但在其他模块通过<dependency>标签引入时还是会报找不到的错误。
[INFO] Scanning for projects...
[INFO]
[INFO] ------< com.example.baidu.speech.realtime:baidu-speech-realtime >-------
[INFO] Building baidu-speech-realtime 20240515
[INFO] from pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
Downloading from nexus-aliyun: http://maven.aliyun.com/nexus/content/groups/public/com/example/baidu/speech/common/baidu-speech-common/20240515/baidu-speech-common-20240515.pom
[WARNING] The POM for com.example.baidu.speech.common:baidu-speech-common:jar:20240515 is missing, no dependency information available
Downloading from nexus-aliyun: http://maven.aliyun.com/nexus/content/groups/public/com/example/baidu/speech/common/baidu-speech-common/20240515/baidu-speech-common-20240515.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.429 s
[INFO] Finished at: 2024-05-15T21:20:22+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project baidu-speech-realtime: Could not resolve dependencies for project com.example.baidu.speech.realtime:baidu-speech-realtime:jar:20240515: The following artifacts could not be resolved: com.example.baidu.speech.common:baidu-speech-common:jar:20240515 (absent): Could not find artifact com.example.baidu.speech.common:baidu-speech-common:jar:20240515 in nexus-aliyun (http://maven.aliyun.com/nexus/content/groups/public) -> [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二、问题解决
出现这种问题，需要检查你当前安装的这个模块在仓库中的坐标，与引入这个模块时的坐标是否一致。话不多说，直接上图。
2.1 比如下面这一张图，我要安装 baidu-speech-common 这个模块，但是呢作者比较手见，把下图中被注释了的<groupId>删掉了，这就导致 baidu-speech-common 这个模块它的<groupId>会默认继承<parent>中的<groupId>，也就是 com.example.baidu.speech，这也就意味着这个模块会被安装到 Maven 仓库中的 com/example/baidu/speech 目录下。
2.2 接下来看这张图，我在 baidu-speech-realtime 模块中引入了 baidu-speech-common，然后在执行 maven install 的时候就报了上述问题（下图由于IDEA缓存原因没有爆红，其实控制台已经报错了）。引入的 baidu-speech-common 的<groupId>为 com.example.baidu.speech.common，也就是说当前模块需要去 Maven 仓库中的 com/example/baidu/speech/common 目录下寻找安装的模块。仔细对比上一张图的信息，会发现安装的模块坐标与要寻找的模块坐标不一致，这也就导致 mavne install 时报错说找不到依赖。
