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\\/ ___)| |_)| | | | | || (_| | ) ) ) )
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:: Spring Boot :: (v2.0.2.RELEASE)
2018-05-30 10:03:51.252 INFO 6448 --- [ restartedMain] com.example.DemoApplication : Starting DemoApplication on huyh-PC with PID 6448 (D:\work\springbootspace\demo\target\classes started by huyh in D:\work\springbootspace\demo)
2018-05-30 10:03:51.254 INFO 6448 --- [ restartedMain] com.example.DemoApplication : No active profile set, falling back to default profiles: default
2018-05-30 10:03:51.775 INFO 6448 --- [ restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@5d4441ea: startup date [Wed May 30 10:03:51 CST 2018]; root of context hierarchy
2018-05-30 10:03:53.404 WARN 6448 --- [ restartedMain] o.m.s.mapper.ClassPathMapperScanner : No MyBatis mapper was found in '[com.example]' package. Please check your configuration.
2018-05-30 10:03:53.509 INFO 6448 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2018-05-30 10:03:54.092 INFO 6448 --- [ restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$5cc6f725] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-05-30 10:03:54.107 INFO 6448 --- [ restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cache.annotation.ProxyCachingConfiguration' of type [org.springframework.cache.annotation.ProxyCachingConfiguration$$EnhancerBySpringCGLIB$$a5d92d43] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-05-30 10:03:54.840 INFO 6448 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2018-05-30 10:03:54.885 INFO 6448 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2018-05-30 10:03:54.885 INFO 6448 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.31
2018-05-30 10:03:54.890 INFO 6448 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [D:\work\JDK\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\work\JDK\bin;D:\work\SVN\bin;C:\Program Files (x86)\Git\cmd;%TOMCAT_HOME%\bin;D:\work\tomcat7\lib;D:\work\JDK\bin;D:\work\JDK\jre\bin;.]
2018-05-30 10:03:55.634 INFO 6448 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-05-30 10:03:55.634 INFO 6448 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 3864 ms
2018-05-30 10:03:56.250 INFO 6448 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Servlet dispatcherServlet mapped to [/]
2018-05-30 10:03:56.259 INFO 6448 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-05-30 10:03:56.260 INFO 6448 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-05-30 10:03:56.261 INFO 6448 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-05-30 10:03:56.262 INFO 6448 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
Logging initialized using 'class org.apache.ibatis.logging.stdout.StdOutImpl' adapter.
2018-05-30 10:03:56.854 WARN 6448 --- [ restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'redisCacheTransfer': Unsatisfied dependency expressed through method 'setJedisConnectionFactory' parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.data.redis.connection.jedis.JedisConnectionFactory' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
2018-05-30 10:03:56.869 INFO 6448 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2018-05-30 10:03:56.885 INFO 6448 --- [ restartedMain] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-05-30 10:03:57.077 ERROR 6448 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of method setJedisConnectionFactory in com.example.Utils.cache.RedisCacheTransfer required a bean of type 'org.springframework.data.redis.connection.jedis.JedisConnectionFactory' that could not be found.
- Bean method 'redisConnectionFactory' in 'JedisConnectionConfiguration' not loaded because @ConditionalOnMissingBean (types: org.springframework.data.redis.connection.RedisConnectionFactory; SearchStrategy: all) found beans of type 'org.springframework.data.redis.connection.RedisConnectionFactory' redisConnectionFactory
Action:
Consider revisiting the conditions above or defining a bean of type 'org.springframework.data.redis.connection.jedis.JedisConnectionFactory' in your configuration.
Process finished with exit code 0刚接触spring boot在用redis做二级缓存的时候，依照往上的例子做的，结果启动的时候就报这个错误！
pom依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
<version>2.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
</dependency>然后下面是application的
#redis
spring.redis.database=1
spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.password=
spring.redis.pool.max-idle=8
spring.redis.pool.min-idle=0
spring.redis.pool.max-active=8
spring.redis.pool.max-wait=-1
spring.redis.timeout=50000
#数据库配置
mybatis.mapperLocations=classpath:mappers/*.xml
mybatis.type-aliases-package= com.example.entity
mybatis.config-location= classpath:mybatis-config.xml
#全局映射器启用缓存 *主要将此属性设置完成即可
mybatis.cacheEnabled=true
#查询时，关闭关联对象即时加载以提高性能
mybatis.lazyLoadingEnabled=false
#对于未知的SQL查询，允许返回不同的结果集以达到通用的效果
mybatis.multipleResultSetsEnabled=true
#设置关联对象加载的形态，此处为按需加载字段(加载字段由SQL指 定)，不会加载关联表的所有字段，以提高性能
mybatis.aggressiveLazyLoading=true
#pagehelper
pagehelper.helperDialect=mysql
pagehelper.reasonable=true
pagehelper.supportMethodsArguments=true
pagehelper.params=count=countSql
spring.datasource.url = jdbc:mysql://localhost:3306/exam
spring.datasource.username = root
spring.datasource.password = root
spring.datasource.driverClassName =com.mysql.jdbc.Driver
spring.datasource.max-active=20
spring.datasource.max-idle=8
spring.datasource.min-idle=8
spring.datasource.initial-size=10报错类
@Component
public class RedisCacheTransfer {
@Autowired
public void setJedisConnectionFactory(JedisConnectionFactory jedisConnectionFactory) {
MybatisRedisCache.setJedisConnectionFactory(jedisConnectionFactory);
}
}然后启动的时候就是这个错
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of method setJedisConnectionFactory in com.example.Utils.cache.RedisCacheTransfer required a bean of type 'org.springframework.data.redis.connection.jedis.JedisConnectionFactory' that could not be found.
- Bean method 'redisConnectionFactory' in 'JedisConnectionConfiguration' not loaded because @ConditionalOnMissingBean (types: org.springframework.data.redis.connection.RedisConnectionFactory; SearchStrategy: all) found beans of type 'org.springframework.data.redis.connection.RedisConnectionFactory' redisConnectionFactory
Action:
Consider revisiting the conditions above or defining a bean of type 'org.springframework.data.redis.connection.jedis.JedisConnectionFactory' in your configuration.
Process finished with exit code 0我也不知道我贴的这些够不够大佬们分析问题，如果想看哪里我可以再贴上来
java
原因如 @喵了个咪 所说，Spring-boot 2.0 默认使用redis client是lettuce
解决办法
想试试lettuce:
把JedisConnectionFactory依赖替换为org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory或者org.springframework.data.redis.connection.RedisConnectionFactory
推荐后者，它是JedisConnectionFactory和LettuceConnectionFactory都实现的接口，好处是哪天你想换个redis client可以只改项目依赖而不用动Java代码
想换成jedis：
排除lettuce依赖，引入jedis
或者用spring-boot 1.x也可以?
报错分析
这里是说因为已经存在一个RedisConnectionFactory的Bean了, JedisConnectionConfiguration这个类里的redisConnectionFactory方法没有加载
根据LettuceConnectionConfiguration的代码
可知spring发现lettuce的redis客户端类时，配置类LettuceConnectionConfiguration就会生效，因此不想用想要用jedis的话需要把lettuce的依赖去掉
这两个BEAN的配置类分别为org.springframework.boot.autoconfigure.data.redis.JedisConnectionConfiguration和org.springframework.boot.autoconfigure.data.redis.LettuceConnectionConfiguration
，有兴趣可以去看看