@Override
public void doPullTask(MessageQueue mq, PullTaskContext context) {
MQPullConsumer consumer = context.getPullConsumer();
try {
// 获取从哪里拉取
long offset = consumer.fetchConsumeOffset(mq, false);
if (offset < 0)
offset = 0;
PullResult pullResult = consumer.pull(mq, "*", offset, 32);
System.out.println(offset + "\t" + mq + "\t" + pullResult);