Grails中的异步编程

概述我在Grails应用程序中使用Servlet 3.0异步渲染.我收到以下错误. | Error 2014-04-29 11:10:24,125 [Actor Thread 28] ERROR gpars.LoggingPoolFactory - Async execution error: nullMessage: null Line | Method->> 61 | doCal 我在Grails应用程序中使用Servlet 3.0异步渲染.我收到以下错误.

| Error 2014-04-29 11:10:24,125 [Actor Thread 28] ERROR gpars.LoggingPoolFactory  - Async execution error: nullMessage: null    line | Method->>   61 | doCall    in org.grails.async.factory.gpars.GparsPromise$_onComplete_closure1- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |     62 | run       in groovyx.gpars.dataflow.DataCallback|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker^    724 | run . . . in java.lang.Thread

请帮我解决这个问题.

这是守则

//Promise 1    Promise p1 = task {        println ID+" p1 Task is Runing"        sleep(4000)         println ID+" p1 Thread Woke Up"        return "p1Completed"    }    //Promise 2    Promise p2 = task {        println ID+" p2 Task is Runing"            sleep(4000)        println ID+" p2 Thread Woke Up"        return "p2Completed"    }    p1.onComplete { result ->        println ID+" Promise p1 Completed returned "+result      }    p1.onError { Throwable err ->        println ID+" p1 An error occured ${err.message}"    }    p2.onComplete { result ->        println ID+" Promise p2 Completed returned "+result    }    p2.onError { Throwable err ->        println ID+" p2 An error occured ${err.message}"    }

解决方法 您需要在代码底部添加以下行：

p1.get()p2.get()

这将阻止请求,直到两个承诺都完成.如果要运行异步任务并在不同步等待响应的情况下结束请求,则需要使用java executor框架.检查这个问题：Error on async job

总结

以上是内存溢出为你收集整理的Grails中的异步编程全部内容，希望文章能够帮你解决Grails中的异步编程所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。