添加配置参数：https://www.isharkfly.com/t/java-text-blocks-are-not-supported-in-source-11/15693

Author: honeymoose

pom.xml

@@ -359,6 +359,10 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
                 <version>${maven-javadoc-plugin.version}</version>
+                <configuration>
+                    <release>${java.version}</release>
+                    <encoding>UTF-8</encoding>
+                </configuration>
                 <executions>
                     <execution>
                         <id>attach-javadocs</id>