SpringCloud Alibaba整合swagger2时，启动时报错

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APPLICATION FAILED TO START

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Description:

Parameter 2 of constructor in springfox.documentation.spring.web.readers.parameter.ModelAttributeParameterExpander required a bean of type 'springfox.documentation.spi.schema.EnumTypeDeterminer' that could not be found.

Action:

Consider defining a bean of type 'springfox.documentation.spi.schema.EnumTypeDeterminer' in your configuration.

问题背景：
在SpringCloud Alibaba整合swagger2时，启动时报以上错误。

    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>2.7.0</version>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>2.7.0</version>
    </dependency>

问题原因：
是因为swagger2版本太低导致的问题

解决方案：
版本改为：<version>2.9.2</version>