spring boot 启动报 java.lang.NoClassDefFoundError: ch/qos/logback/core/spi/LifeCycle 错误-白红宇

spring boot 启动报 java.lang.NoClassDefFoundError: ch/qos/logback/core/spi/LifeCycle 错误

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发布时间：2019-06-19

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Failed to instantiate SLF4J LoggerFactoryReported exception:java.lang.NoClassDefFoundError: ch/qos/logback/core/spi/LifeCycle    at java.lang.ClassLoader.defineClass1(Native Method)    at java.lang.ClassLoader.defineClass(ClassLoader.java:763)    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)    at java.net.URLClassLoader$1.run(URLClassLoader.java:368)    at java.net.URLClassLoader$1.run(URLClassLoader.java:362)    at java.security.AccessController.doPrivileged(Native Method)    at java.net.URLClassLoader.findClass(URLClassLoader.java:361)    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)    at org.slf4j.impl.StaticLoggerBinder.
     
      (StaticLoggerBinder.java:59)    at org.slf4j.impl.StaticLoggerBinder.
      
       (StaticLoggerBinder.java:50)    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.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:155)    at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:132)    at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:273)    at org.springframework.boot.SpringApplication.
       
        (SpringApplication.java:179)    at com.cfj.testboot.Application.main(Application.java:19)

解决：这个问题的根本原因是类路径中不存在所需的jar。请添加以下依赖项——它们将解决您的问题。

再pom.xml中增加：


                 
      
       ch.qos.logback
                  
      
       logback-classic
                  
      
       1.2.3
              
             
                 
      
       ch.qos.logback
                  
      
       logback-classic
                  
      
       1.2.3
                  
                      
                           
        
         org.slf4j
                            
        
         slf4j-log4j12
                        
                   
              
             
                 
      
       ch.qos.logback
                  
      
       logback-core
                  
      
       1.2.3