E:\Java\jdk-11.0.6\bin\java.exe -Dmaven.multiModuleProjectDirectory=E:\IDEAProject\SSMProject -Dmaven.home=E:\maven\apache-maven-3.6.3 -Dclassworlds.conf=E:\maven\apache-maven-3.6.3\bin\m2.conf "-Dmaven.ext.class.path=D:\IntelliJ IDEA 2021.3.3\plugins\maven\lib\maven-event-listener.jar" "-javaagent:D:\IntelliJ IDEA 2021.3.3\lib\idea_rt.jar=12614:D:\IntelliJ IDEA 2021.3.3\bin" -Dfile.encoding=UTF-8 -classpath E:\maven\apache-maven-3.6.3\boot\plexus-classworlds-2.6.0.jar;E:\maven\apache-maven-3.6.3\boot\plexus-classworlds.license org.codehaus.classworlds.Launcher -Didea.version=2021.3.3 -s E:\maven\apache-maven-3.6.3\conf\settings.xml -Dmaven.repo.local=E:\maven\maven_repository mybatis-generator:generate -e
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
Downloading from alimaven: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/plugins/maven-metadata.xml
Downloading from alimaven: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/mojo/maven-metadata.xml
Downloaded from alimaven: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/plugins/maven-metadata.xml (10 kB at 9.6 kB/s)
Downloaded from alimaven: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/mojo/maven-metadata.xml (21 kB at 18 kB/s)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.627 s
[INFO] Finished at: 2022-04-05T17:06:37+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'mybatis-generator' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (E:\maven\maven_repository), alimaven (http://maven.aliyun.com/nexus/content/groups/public/)] -> [Help 1]
org.apache.maven.plugin.prefix.NoPluginFoundForPrefixException: No plugin found for prefix 'mybatis-generator' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (E:\maven\maven_repository), alimaven (http://maven.aliyun.com/nexus/content/groups/public/)]
at org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolve (DefaultPluginPrefixResolver.java:95)
at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.findPluginForPrefix (MojoDescriptorCreator.java:266)
at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.getMojoDescriptor (MojoDescriptorCreator.java:220)
at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments (DefaultLifecycleTaskSegmentCalculator.java:104)
at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments (DefaultLifecycleTaskSegmentCalculator.java:83)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:89)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:566)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
at org.codehaus.classworlds.Launcher.main (Launcher.java:47)
[ERROR]
[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/NoPluginFoundForPrefixException
org.apache.maven.plugin.prefix.NoPluginFoundForPrefixException: No plugin found for prefix 'mybatis-generator' in the current project
错误提示也可以看出来，没有引入mybatis-generator插件。
参照https://blog.csdn.net/qq_40542534/article/details/108812822
已解决