查看Maven包的依赖跟exclusions

我将springBoot的项目打包成JAR然后运行时，报

IllegalStateException: Detected both log4j-over-slf4j.jar AND bound slf4j-log4j12.jar on the class path,

就是Jar包冲突了

解决方案：

在使用到的依赖包中添加<exclusion>标签将slf4j-log4j12.jar和log4j排除即可

         <dependency>
			<groupId>org.apache.zookeeper</groupId>
			<artifactId>zookeeper</artifactId>
			<version>3.4.13</version>
			<exclusions>
				<exclusion>
					<groupId>org.slf4j</groupId>
					<artifactId>slf4j-log4j12</artifactId>
				</exclusion>
				<exclusion>
					<groupId>log4j</groupId>
					<artifactId>log4j</artifactId>
				</exclusion>
			</exclusions>
		</dependency>

在POM文件的第三项Dependency Hierarchy