下面是创建自定义验证器的分步示例代码。

Here's the example code to create a custom validator, step by step.

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创建自定义验证器的步骤如下，我们将一步步地分析。

The steps to create a custom validator are as follows; we'll go over them one by one.

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自定义验证组件(它实现了Validator接口)。

Custom validation components (which implement the Validator interface).

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