An error is reported when idea is running: Error:java: Compilation failed: internal java compiler error

When idea runs the project, an error message is reported:Error:java: Compilation failed: internal java compiler error

The cause of the problem: the idea syntax you configured and the compilation syntax of the maven configuration are inconsistent.
Such as the following configuration:
File -> Project Structure (configuration is jdk1.8 syntax)

but maven's pom.xml file configuration (configuration is jdk1.7 syntax):

<build>
     <plugins>
         <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-compiler-plugin</artifactId>
             <configuration>
                 <source>7</source>
                 <target>7</target>
             </configuration>
         </plugin>
     </plugins>
 </build>

Solution: change pom.xml to 8

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>8</source>
                <target>8</target>
            </configuration>
        </plugin>
    </plugins>
</build>