java - 在在线应用程序中使用Java Executor服务

Question

我有在线申请的一项功能。我需要在生成收据后将收据邮寄给客户。我的问题是邮件功能需要更多时间近20至30秒，客户在网上交易时无法等待很长时间。

所以我使用java ExecutorService来独立运行邮件服务[sendMail]，并将响应页面返回给客户，无论邮件是否发送。

在线应用程序中使用ExecutorService是否正确[Http请求和响应]。下面是我的代码。请多多指教。

@RequestMapping(value="/generateReceipt",method=RequestMethod.GET)
public @ResponseBody ReceiptBean generateReceipt(HttpServletRequest httpRequest,HttpServletResponse httpResponse) {

// Other codes here 
...
...

I need run below line independently, since it takes more time. so commeneted and wrote executor service
//mailService.sendMail(httpRequest,  httpResponse, receiptBean);

java.util.concurrent.ExecutorService executorService = java.util.concurrent.Executors.newFixedThreadPool(10);
executorService.execute(new Runnable() {
    ReceiptBean receiptBean1;
    public void run() {
        mailService.sendMail(httpRequest,  httpResponse, receiptBean);
    }
    public Runnable init(ReceiptBean receiptBean) {
        this.receiptBean = receiptBean1;
        return(this);
    }
}.init(receiptBean));
executorService.shutdown();

return receiptBean;
} 

Answer 1

你可以做到这一点，尽管我不希望这段代码出现在 Controller 类中，而是出现在单独的(关注点分离和全部)中。

不过，既然你好像用的是Spring，那你不妨用他们的scheduling framework .