win环境下启动kafka Port already in use: 6688； nested exception is

背景

   zk启动成功后，接下来启动kafka，再启动kafka后一直说端口被占用。

端口占用解决办法:
netstat -aon|findstr 9092

taskkill -f -pid 7780

杀掉后，再次启动kafka时，问题并未解决

后来修改了批处理文件kafka-run-class.bat中的以下地方

  fi
}

# need to check if called to start server or client 
# in order to correctly decide about JMX_PORT
ISKAFKASERVER="false"
if [[ "$*" =~ "kafka.Kafka" ]]; then
    ISKAFKASERVER="true"
fi

base_dir=$(dirname $0)/..

if [ -z "$SCALA_VERSION" ]; then
@@ -146,7 +153,7 @@ if [ -z "$KAFKA_JMX_OPTS" ]; then
f