【日常Exception】第二十四回：nested exception is java.lang.NoClassDefFoundError: redis/clients/jedis/util/Pool

女爷i 2023-01-16 09:51 70阅读 0赞

# 热门系列： #

*  ### [程序人生，精彩抢先看][Link 1] ###
 *  ### [日常异常，是否也有你似曾相识的那一个][Link 2] ###

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# 1.问题 #

近期遇到的一个异常问题如题所示，下面是完整的异常内容，原景重现：

> **PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'redisFactory' threw exception; nested exception is java.lang.NoClassDefFoundError: redis/clients/jedis/util/Pool**

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
    SLF4J: Defaulting to no-operation (NOP) logger implementation
    SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
    Disconnected from the target VM, address: '127.0.0.1:60159', transport: 'socket'
    Exception in thread "main" java.lang.ExceptionInInitializerError
    	at xxx.xxx.xxx.lifecycle_calc.source.KafkaSource.<init>(KafkaSource.java:14)
    	at xxx.xxx.xxx.lifecycle_calc.LifecycleCalcStartup.main(LifecycleCalcStartup.java:31)
    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'redisHelper' defined in URL [file:/D:/Java/Workplace/fargo-crm-backend/fargo-lifecycle-calc/target/classes/config/spring-redis.xml]: Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
    PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'redisFactory' threw exception; nested exception is java.lang.NoClassDefFoundError: redis/clients/jedis/util/Pool
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1736)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1444)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
    	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879)
    	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)
    	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
    	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:144)
    	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:85)
    	at xxx.xxx.xxx.lifecycle_calc.factory.ApplicationContextFactory.<clinit>(ApplicationContextFactory.java:9)
    	... 2 more
    Caused by: org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
    PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'redisFactory' threw exception; nested exception is java.lang.NoClassDefFoundError: redis/clients/jedis/util/Pool
    	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:122)
    	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:77)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1732)
    	... 15 more
    
    Process finished with exit code 1

**异常提示：**在方法调用redisFactory时，因找不到路径redis/clients/jedis/util/Pool的这个类，而导致的报错！

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# 2.原因 #

先说一下我的本地项目环境情况：**spring-boot版本2.2.5.RELEASE**，**jedis使用的版本是2.9.3**

## 2.1 分析一 ##

既然提示找不到这个包，那么先看看我们的项目中，依赖包中是否能从指定路径找到这个类？？？

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l5MzM5NDUyNjg5_size_16_color_FFFFFF_t_70][]

从路径结构，发现pool确实不是在jedis下面，而是在与jedis同级的util目录下，所以才报错找不到该类！！！

## 2.2 换依赖包 ##

通过了解，得知jedis1.x版本与2.x版本有所差别，与springboot的版本有相对应的依赖关系！

<table> 
 <thead> 
  <tr> 
   <th style="width:322px;">spring-data-redis版本</th> 
   <th style="width:419px;">jedis版本</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td style="width:322px;">2.1.x</td> 
   <td style="width:419px;">2.9.x</td> 
  </tr> 
  <tr> 
   <td style="width:322px;">2.2.x</td> 
   <td style="width:419px;">3.x</td> 
  </tr> 
 </tbody> 
</table>

于是把jedis版本换成了**3.1.0**版本：

<dependency>
        <groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
        <version>3.1.0</version>
    </dependency>

再看指定的目录是否有对应的类？果然，下面这个目录结构是可以找到的：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l5MzM5NDUyNjg5_size_16_color_FFFFFF_t_70 1][]

重新启动，本以为胜利的曙光就在眼前了！怎料，控制台出现如下显示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l5MzM5NDUyNjg5_size_16_color_FFFFFF_t_70 2][]

但是程序并没有退出提示，说明此时程序已经启动了，只是日志没有正常打印出来而已！

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# 3.解决 #

通过上面的分析处理，其实在上述**V2.2换依赖包**时，我们主要的问题已经解决啦（也就是如题的问题）！！！但是，控制台却没有日志打印，这多少让人觉得好像还是没能**正常启动~~~**

所以，我们需要再看看日志为啥子没有打印出来！因为主要问题已经找出来了，所以这个日志为啥没打印的问题，我就直接给出我的解决方式吧 ！

通过查看包依赖问题，我们发现是依赖里缺少了log日志的包依赖，导致日志没有正常打印！所以加上之后，包依赖情况如下：

<dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-redis</artifactId>
    </dependency>
    <dependency>
        <groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
        <version>3.1.0</version>
    </dependency>
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
    </dependency>

其实上述依赖，**改成如下情况**，也是ok的：

<dependency>
    	<groupId>org.springframework.boot</groupId>
    	<artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>
    <dependency>
    	<groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
    </dependency>

因为**spring-boot-starter-data-redis**中已经包含了相对应的依赖包了，所以只是依赖包的结构不同而已！！！

最后，如果大家觉得有帮助或是有疑问的地方，欢迎下方留言讨论~~~（感谢一键三连的支持！！！）

[Link 1]: https://yangy.blog.csdn.net/article/details/109314083
[Link 2]: https://blog.csdn.net/yy339452689/category_9634246.html
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