The method iterator() is ambiguous for the type KafkaStreambyte[],byte[]

 ConsumerIterator<byte[],byte[]> it =stream.iterator();  这句代码老是报错，The method iterator() is ambiguous for the type KafkaStream<byte[],byte[]>

解决方法：将maven中配置

plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.1</version><configuration><source>${jdk.version}</source><target>${jdk.version}</target><showWarnings>true</showWarnings></configuration>
</plugin>
删除，然后给系统应用jdk1.8,这个问题一般是由于jdk的版本导致的。