如何在 symfony 中尝试 Catch [英] How to Try Catch in symfony

问题描述

情况:

//trollCommand.php
[...]
foreach ($trolltypes as $type) { //$type=={"Frost","RandomBroken","Forest"}
    try {
        $output->writeln($type);
        $troll={"get".$type."TrollType"}();
        $output->writeln("TEST 1");
        $troll->__load();
        $output->writeln("TEST 2");
    } catch (EntityNotFoundException $e) {
        $output->writeln("WARNING: TROLL ENTITY DOES NOT EXIST.");
        continue;
    }
    $output->writeln("TROLLING");
    do_something_with_troll($troll);
}

getFrostTrollType 加载正常，getForestTrollType 也应该加载正常，但在此之前，这是一个问题，getRandomBrokenTrollType() 故意不存在，然后我在控制台看到消息:

getFrostTrollType loads ok, getForestTrollType should be loaded ok too, but before that, it is a problem, getRandomBrokenTrollType() deliberately does not exist, and then I see message in console:

 Frost
 Test 1
 Test 2
 TROLLING
 RandomBroken
 Test 1
 [Doctrine\ORM\EntityNotFoundException]  
 Entity was not found. 
 //[EXIT FROM SCRIPT]
 troll@troll-machine ~/trollSandbox/ $ _

它应该是:警告:巨魔实体不存在.然后继续；但它不会发生

it should be: WARNING: TROLL ENTITY DOES NOT EXIST. and then continue; but it does not happen

如何检查对象的方法是否存在?

How to check existing of a object's method?

推荐答案

Doctrine 抛出的异常称为 Doctrine\ORM\EntityNotFoundException 并且您正在捕获 EntityNotFoundException.

the Exception thrown by Doctrine is called Doctrine\ORM\EntityNotFoundException and you are catching EntityNotFoundException.

那有区别，命名空间很重要.

Thats a difference, the namespace matters.

要调试它，请改为捕获 Exception 并观察实际异常的类型.然后替换它.

to debug this, catch Exception instead and observe the type of the actual exception. then replace it.

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