Spring会正确地为“floatList”属性填上浮点数，而不是字符串，因为它能非常聪明地意识到它需要执行类型转换。

Spring will correctly populate the "floatList" property with floats, rather than Strings, as it is smart enough to realize that it needs to perform the type conversion.

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使用指定的区域性特定格式设置信息，将数字的指定字符串表示形式转换为等效的单精度浮点数。

Converts the specified string representation of a number to an equivalent single-precision floating-point number, using the specified culture-specific formatting information.

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返回从字符串转换得到的浮点数。

A string that represents a floating-point number.

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