Question

我正在使用Laravel，还有另一个问题-我在2019-03-07 17:23:16.065 ERROR 29179 --- [lTaskExecutor-1] .a.i.SimpleAsyncUncaughtExceptionHandler : Unexpected error occurred invoking async method: public void com.example.demo.SomeServiceImpl.myAsyncFunction(java.lang.String) java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. at org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:131) ~[spring-web-4.3.22.RELEASE.jar:4.3.22.RELEASE] at org.springframework.web.context.support.WebApplicationContextUtils.currentRequestAttributes(WebApplicationContextUtils.java:309) ~[spring-web-4.3.22.RELEASE.jar:4.3.22.RELEASE] at org.springframework.web.context.support.WebApplicationContextUtils.access$400(WebApplicationContextUtils.java:64) ~[spring-web-4.3.22.RELEASE.jar:4.3.22.RELEASE] at org.springframework.web.context.support.WebApplicationContextUtils$SessionObjectFactory.getObject(WebApplicationContextUtils.java:366) ~[spring-web-4.3.22.RELEASE.jar:4.3.22.RELEASE] at org.springframework.web.context.support.WebApplicationContextUtils$SessionObjectFactory.getObject(WebApplicationContextUtils.java:361) ~[spring-web-4.3.22.RELEASE.jar:4.3.22.RELEASE] at org.springframework.beans.factory.support.AutowireUtils$ObjectFactoryDelegatingInvocationHandler.invoke(AutowireUtils.java:307) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE] at com.sun.proxy.$Proxy93.setAttribute(Unknown Source) ~[na:na] at com.example.demo.SomeServiceImpl.myAsyncFunction(SomeServiceImpl.java:21) ~[classes/:na] at com.example.demo.SomeServiceImpl$$FastClassBySpringCGLIB$$9dbf1607.invoke(<generated>) ~[classes/:na] at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.3.22.RELEASE.jar:4.3.22.RELEASE] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:736) ~[spring-aop-4.3.22.RELEASE.jar:4.3.22.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.22.RELEASE.jar:4.3.22.RELEASE] at org.springframework.aop.interceptor.AsyncExecutionInterceptor$1.call(AsyncExecutionInterceptor.java:115) ~[spring-aop-4.3.22.RELEASE.jar:4.3.22.RELEASE] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_191] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_191] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_191] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_191]对象中得到了null变量的值：

$validator

Answer 1

您需要使用use构造才能从closure内部的父作用域访问变量，例如function($input) use ($locale)。例如：

$validator->sometimes('alias'.$locale,'unique:pages,alias->'.$locale.'|max:255', function($input) use ($locale) {
   dump($locale); 
}

Answer 2

如果要从父作用域继承变量，则应使用use构造：

您的新代码应如下：

class PageRequest extends Request
{
    protected function getValidatorInstance()
    {
        $validator = parent::getValidatorInstance();
        foreach (\Config::get('app.all_langs') as $locale) {
            dump($locale); // !!!!! all it's ok - en, ro, ru
            $validator->sometimes('alias'.$locale,'unique:pages,alias->'.$locale.'|max:255', function($input) use ($locale) {
                dd($locale]); // dump it here
            }
    }
}

如何使用“ sometimes（）”-Laravel验证，foreach构造中的方法

2 个答案: