创建多线程

* 创建线程池对象

@Bean
public ThreadPoolTaskExecutor getThreadPool() {

ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();

executor.setCorePoolSize(4);

executor.setMaxPoolSize(8);

executor.setQueueCapacity(100);

executor.setKeepAliveSeconds(60);

executor.setThreadNamePrefix("Pool-A");

executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());

executor.initialize();

return executor;

}
```

* 使用线程池

@Autowired
private ThreadPoolTaskExecutor executorService;

executorService.submit(new Runnable() {
@Override
public void run() {
try {
SendResult sendResult = sendMessage(topic, tag, finalTradePay.getPayId(), JSON.toJSONString(finalTradePay));
log.info(JSON.toJSONString(sendResult));
if (SendStatus.SEND_OK.equals(sendResult.getSendStatus())) {
mqProducerTempMapper.deleteByPrimaryKey(mqProducerTemp.getId());
System.out.println("删除消息表成功");
}
} catch (Exception e) {
e.printStackTrace();
}
}
});

创建多线程

原文：https://www.cnblogs.com/hwgok/p/13956151.html