springboot 出现Failed to instantiate SLF4J LoggerFactory Reported exception: java.lang.NoClassDefFound

今天建了一个springboot的项目包了很多的错，如下：

 Failed to instantiate SLF4J LoggerFactory
Reported exception:
java.lang.NoClassDefFoundError: ch/qos/logback/core/joran/spi/JoranException
at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
at org.apache.logging.slf4j.SLF4JLoggerContext.getLogger(SLF4JLoggerContext.java:39)
at org.apache.commons.logging.LogFactory$Log4jLog.<init>(LogFactory.java:204)
at org.apache.commons.logging.LogFactory$Log4jDelegate.createLog(LogFactory.java:166)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:109)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:99)
at org.springframework.boot.SpringApplication.<clinit>(SpringApplication.java:198)
at springboottext.Pub.main(Pub.java:15)
Caused by: java.lang.ClassNotFoundException: ch.qos.logback.core.joran.spi.JoranException
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)
... 11 more
Exception in thread "main" java.lang.NoClassDefFoundError: ch/qos/logback/core/joran/spi/JoranException
at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
at org.apache.logging.slf4j.SLF4JLoggerContext.getLogger(SLF4JLoggerContext.java:39)
at org.apache.commons.logging.LogFactory$Log4jLog.<init>(LogFactory.java:204)
at org.apache.commons.logging.LogFactory$Log4jDelegate.createLog(LogFactory.java:166)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:109)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:99)
at org.springframework.boot.SpringApplication.<clinit>(SpringApplication.java:198)

而且上面说的包也有没有缺的，然后我在网上查啊查没发现什么错误，我得天啊，浪费了好多时间，然后我根据jar包所在位置把仓库里的包全部删除，然后在pom.xml中添加如下

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.RELEASE</version>
</parent>
<dependencies>
<!-- -springboot 整合Web组件 整合SpringMVC 就会把传统方式的SpringMVC依赖的jar全部给下载来 -->
<!-- 引入spring-boot-starter-web 帮你整合好所有相关的依赖jar包 原理 maven依赖传递 -->


<!-- 原理： spring-boot-starter-parent< 中，整合号相关 jar依赖信息 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

</dependencies>

然后保存就会去*仓库下载下载完了就刷新一下就ok了