try/catch块不处理发生的错误

Question

这个尝试捕获块似乎没有捕获发生的错误，这很奇怪，考虑到我对网站的注册部分有一个类似的尝试捕获块。这将处理登录。该错误发生在第三行电子邮件：$scope.authInfo.email 并引发此错误：

Error: Firebase.authWithPassword failed: First argument must contain the key "email" with type "string"

当电子邮件格式错误时会发生这种情况，例如test@。因此，当它是时，我希望在catch块中设置错误消息。

有人知道为什么这个< code>try catch不起作用吗？

try {
    $scope.syncAuth.$authWithPassword({
        email: $scope.authInfo.email,
        password: $scope.authInfo.password
    }).then(function(authData) {
        $scope.isSuccessful = true;
        $scope.success = 'You have successfully logged in - Redirecting...';
        $rootScope.loggedIn = true;
        $timeout($scope.redirectUser, 3000);
    }).catch(function(error) {

        switch (error.code) {

            case 'INVALID_USER': $scope.errors.push('The email you have entered is not a registered user.'); 
                                break;

            case 'INVALID_PASSWORD': $scope.errors.push('Invalid password.'); 
                                break;
        }
    });
}
catch (err) {
    $scope.errors.push('Invalid email format.')
}

Answer 1

在此处查看$auth Password方法的源代码。正如您所看到的，如果错误将被抛出-Firebase将返回被拒绝的promise。因此，您可以在promise捕获块中处理您的错误：

$scope.syncAuth.$authWithPassword({
    email: $scope.authInfo.email,
    password: $scope.authInfo.password
})
.catch(function(error) {
    switch (error.code) {
        case 'INVALID_USER': 
            $scope.errors.push('The email you have entered is not a registered user.');
            break;
        case 'INVALID_PASSWORD': 
            $scope.errors.push('Invalid password.');
            break;
        default:
            $scope.errors.push('Invalid email format.')
    }
    throw error;
})
.then(function(authData) {
    $scope.isSuccessful = true;
    $scope.success = 'You have successfully logged in - Redirecting...';
    $rootScope.loggedIn = true;
    $timeout($scope.redirectUser, 3000);
});