查找冲突

当启动时有类似如下错误时，说明有依赖的jar包冲突，一般在错误里面会指明xxx.jar是冲突的jar包。

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APPLICATION FAILED TO START
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Description:

An attempt was made to call the method xxx; but it does not exist. Its class, xxx, is available from the following locations:

    jar:file:/C:/Users/xxx/.m2/xxx.jar!/com/xxx/xxx.class
    jar:file:/C:/Users/xxx/.m2/xxx.jar!/com/xxx/xxx.class

It was loaded from the following location:

    xxx


Action:

Correct the classpath of your application so that it contains a single, compatible version of xxx

在idea中打开pom文件(如果有多个module，需要逐个pom打开排查)，右击鼠标，选择Diagrams>show dependencies，会出现所有jar包的依赖关系图，如果出现红色连线，说明有冲突

解决冲突

在jar包依赖关系图中ctrl+f查找上面提示的冲突jar包名称，查看下方依赖它的jar包，在pom的dependency坐标中逐个移除该冲突jar包

<dependency>
            <groupId>com.sample</groupId>
            <artifactId>sample-artifact</artifactId>
            <version>1.0.0-SNAPSHOT</version>
            <exclusions>
                <exclusion>
                    <groupId>com.conflict</groupId>
                    <artifactId>conflict-jar</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

参考