总结/朱季谦
业余在一个SpringBoot项目集成Swagger2时,启动过程一直出现以下报错信息——
An attempt was made to call a method that does not exist. The attempt was made from the following location:
springfox.documentation.schema.DefaultModelDependencyProvider.dependentModels(DefaultModelDependencyProvider.java:79)
The following method did not exist:
com.google.common.collect.FluentIterable.concat(Ljava/lang/Iterable;Ljava/lang/Iterable;)Lcom/google/common/collect/FluentIterable;
The method’s class, com.google.common.collect.FluentIterable, is available from the following locations:
jar:file:/C:/Users/92493/.m2/repository/com/google/guava/guava/18.0/guava-18.0.jar!/com/google/common/collect/FluentIterable.class
The class hierarchy was loaded from the following locations:
com.google.common.collect.FluentIterable: file:/C:/Users/92493/.m2/repository/com/google/guava/guava/18.0/guava-18.0.jar
Action:
Correct the classpath of your application so that it contains a single, compatible version of com.google.common.collect.FluentIterable
出现这个问题,大概猜测到,应该是Maven依赖冲突导致的,忽然想到,是否有可以检查maven依赖冲突的插件呢,一查发现还真有,而且极方便。
这个Idea插件,叫Maven Helper,根据File -> Settings -> Plugins -> Marketplace 输入Maven Helper即可找到。
下载后,重启IDEA,这时点击pom.xml文件,会发现多了一栏【Dependency Analyzer】——
切换至【Dependency Analyzer】栏,在搜索框输入冲突包guava,即会出现,guava都被哪些包依赖了,当多个组件包都依赖了同一个包但又不同版本时,很容易久出现各种冲突。红色部分即是导致启动报异常的地方,可见,springfox–core已经依赖的是20.0包,但其他还依赖18版本的包,这里可以把报错提示的18.0版本的通过exclusion去除即可。
再切换至Text栏,即可发现已经自动增加了exclusions模块——
<dependency>
<groupId>io.shardingsphere</groupId>
<artifactId>sharding-jdbc-spring-namespace</artifactId>
<version>3.1.0</version>
<exclusions>
<exclusion>
<artifactId>guava</artifactId>
<groupId>com.google.guava</groupId>
</exclusion>
</exclusions>
</dependency>
原文地址:https://blog.csdn.net/weixin_40706420/article/details/134658448
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