springboot2 integrated swagger2 appear FluentIterable.append method under the guava package can not be found

Join dependence

1 <!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
2 <dependency>
3     <groupId>com.google.guava</groupId>
4     <artifactId>guava</artifactId>
5     <version>28.0-jre</version>
6 </dependency>

 

Reference: https://blog.csdn.net/qq_23250633/article/details/82699922