启动失败了，报了如下错误：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ehCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/EhCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [net.sf.ehcache.CacheManager]: Factory method 'ehCacheCacheManager' threw exception; nested exception is net.sf.ehcache.CacheException: java.lang.annotation.IncompleteAnnotationException: org.terracotta.statistics.Statistic missing element type

以前一直在用，没有问题，新项目报错。

新项目唯一不同的是使用了easyexcel得错误生成pom

查看easyexcel的pom.xml，找到了这个

        <dependency>
            <groupId>com.github.duanyashu</groupId>
            <artifactId>easyExcel-errorExport</artifactId>
            <version>1.1.1</version>   
        </dependency>

基本上定位问题所在了，org.ehcache和net.sf.ehcache有冲突，那么既然easyexcel已经引用了，我们就去掉net.sf.ehcache。

然后依然报错，有了新的提示，告诉我们无法连接redis，懂了。

那么我们尝试一下用net.sf.ehcache，排除org.ehcache。

 <dependency>
            <groupId>com.github.duanyashu</groupId>
            <artifactId>easyExcel-errorExport</artifactId>
            <version>1.1.1</version>
            <exclusions>
                <exclusion>
                    <groupId>org.ehcache</groupId>
                    <artifactId>ehcache</artifactId>
                </exclusion>
            </exclusions>
 </dependency>

启动成功了。