D:\JDK\bin\java.exe -Dmaven.multiModuleProjectDirectory=D:\miaosha -DarchetypeCatalog=local -Dmaven.home=D:\apache-maven-3.5.0 -Dclassworlds.conf=D:\apache-maven-3.5.0\bin\m2.conf "-javaagent:D:\IDEA\IntelliJ IDEA 2019.1.2\lib\idea_rt.jar=1314:D:\IDEA\IntelliJ IDEA 2019.1.2\bin" -Dfile.encoding=UTF-8 -classpath D:\apache-maven-3.5.0\boot\plexus-classworlds-2.5.2.jar org.codehaus.classworlds.Launcher -Didea.version2019.1.2 --update-snapshots -s D:\apache-maven-3.5.0\conf\settings.xml mybatis-generator:generate

[INFO] Scanning for projects...

Downloading: http://maven.aliyun.com/nexus/content/repositories/central/org/eclipse/m2e/lifecycle-mapping/1.0.0/lifecycle-mapping-1.0.0.pom

[WARNING] The POM for org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 is missing, no dependency information available

Downloading: http://maven.aliyun.com/nexus/content/repositories/central/org/eclipse/m2e/lifecycle-mapping/1.0.0/lifecycle-mapping-1.0.0.jar

[WARNING] Failed to retrieve plugin descriptor for org.eclipse.m2e:lifecycle-mapping:1.0.0: Plugin org.eclipse.m2e:lifecycle-mapping:1.0.0 or one of its dependencies could not be resolved: Could not find artifact org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 in alimaven (http://maven.aliyun.com/nexus/content/repositories/central/)

[INFO] 

[INFO] ------------------------------------------------------------------------

[INFO] Building miaosha 1.0-SNAPSHOT

[INFO] ------------------------------------------------------------------------

[WARNING] The POM for org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 is missing, no dependency information available

[WARNING] Failed to retrieve plugin descriptor for org.eclipse.m2e:lifecycle-mapping:1.0.0: Plugin org.eclipse.m2e:lifecycle-mapping:1.0.0 or one of its dependencies could not be resolved: Failure to find org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 in http://maven.aliyun.com/nexus/content/repositories/central/ was cached in the local repository, resolution will not be reattempted until the update interval of alimaven has elapsed or updates are forced

[INFO] 

[INFO] --- mybatis-generator-maven-plugin:1.3.5:generate (default-cli) @ miaosha ---

[INFO] Connecting to the Database

Thu May 16 16:03:34 CST 2019 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.

[INFO] ------------------------------------------------------------------------

[INFO] BUILD FAILURE

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 5.159 s

[INFO] Finished at: 2019-05-16T16:03:35+08:00

[INFO] Final Memory: 21M/51M

[INFO] ------------------------------------------------------------------------

[ERROR] Failed to execute goal org.mybatis.generator:mybatis-generator-maven-plugin:1.3.5:generate (default-cli) on project miaosha: Unknown character set: 'utf8mb4' -> [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/MojoExecutionException

Process finished with exit code 1