swagger3和fastjson：沒(méi)有發(fā)現(xiàn)沖突。你可以提供一下POM文件，才可以檢查到問(wèn)題。

<!--?swagger?[start]-->
<dependency>
????<groupId>io.springfox</groupId>
????<artifactId>springfox-swagger2</artifactId>
????<version>2.9.2</version>
</dependency>
<dependency>
????<groupId>io.springfox</groupId>
????<artifactId>springfox-swagger-ui</artifactId>
????<version>2.9.2</version>
</dependency>
<!--?swagger?[end]-->
<dependency>
????<groupId>com.alibaba</groupId>
????<artifactId>fastjson</artifactId>
????<version>1.2.70</version>
</dependency>