redis统一异常处理，通过继承CachingConfigurerSupport覆写errorHandler()

annkee058 2017-11-14 11:02:59

我的代码如下：

package com.ctsig.parking.base.redis.exception;

import org.springframework.cache.interceptor.AbstractCacheInvoker;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cache.Cache;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.CacheErrorHandler;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import javax.annotation.Resource;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

@Configuration
public class RedisConfig extends CachingConfigurerSupport {

protected final Logger LOG = LoggerFactory.getLogger(RedisConfig.class);
/**
* redis异常处理
*
* @return
*/
@Bean
@Override
public CacheErrorHandler errorHandler() {

CacheErrorHandler cacheErrorHandler = new CacheErrorHandler() {
@Override
public void handleCacheGetError(RuntimeException e, Cache cache, Object o) {
System.out.println(("---handleCacheGetError:" + cache.getName()));

}

@Override
public void handleCachePutError(RuntimeException e, Cache cache, Object o, Object o1) {
System.out.println(("---handleCachePutError:" + cache.getName()));
}

@Override
public void handleCacheEvictError(RuntimeException e, Cache cache, Object o) {
System.out.println(("---handleCacheEvictError:" + cache.getName()));
}

@Override
public void handleCacheClearError(RuntimeException e, Cache cache) {
System.out.println(("---handleCacheClearError:" + cache.getName()));
}
};
return cacheErrorHandler;
}
}

===========
看的一篇博客http://blog.csdn.net/tianyaleixiaowu/article/details/70670329，通过此方法配置后，如果redis出现异常就会进入errorHandler()中的某个方法，使得程序能够继续执行下去查询数据库而不是中断。
那么问题来了，我的也同样跟此链接博主代码一样，通过在配置文件故意配置错误连接信息，但是还是会报异常，而没有进入统一异常处理器。
怎么破？求大神。。。。。。

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时光呢 2019-12-24

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引用楼主 annkee058 的回复:

我的代码如下： package com.ctsig.parking.base.redis.exception; import org.springframework.cache.interceptor.AbstractCacheInvoker; import com.fasterxml.jackson.annotation.JsonAutoDetect; import com.fasterxml.jackson.annotation.PropertyAccessor; import com.fasterxml.jackson.databind.ObjectMapper; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.beans.factory.annotation.Value; import org.springframework.cache.Cache; import org.springframework.cache.CacheManager; import org.springframework.cache.annotation.CachingConfigurerSupport; import org.springframework.cache.annotation.EnableCaching; import org.springframework.cache.interceptor.CacheErrorHandler; import org.springframework.cache.interceptor.KeyGenerator; import org.springframework.cloud.context.config.annotation.RefreshScope; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.redis.cache.RedisCacheManager; import org.springframework.data.redis.connection.RedisConnectionFactory; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.core.StringRedisTemplate; import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig; import javax.annotation.Resource; import java.lang.reflect.Method; import java.util.HashMap; import java.util.Map; @Configuration public class RedisConfig extends CachingConfigurerSupport { protected final Logger LOG = LoggerFactory.getLogger(RedisConfig.class); /** * redis异常处理 * * @return */ @Bean @Override public CacheErrorHandler errorHandler() { CacheErrorHandler cacheErrorHandler = new CacheErrorHandler() { @Override public void handleCacheGetError(RuntimeException e, Cache cache, Object o) { System.out.println(("---handleCacheGetError:" + cache.getName())); } @Override public void handleCachePutError(RuntimeException e, Cache cache, Object o, Object o1) { System.out.println(("---handleCachePutError:" + cache.getName())); } @Override public void handleCacheEvictError(RuntimeException e, Cache cache, Object o) { System.out.println(("---handleCacheEvictError:" + cache.getName())); } @Override public void handleCacheClearError(RuntimeException e, Cache cache) { System.out.println(("---handleCacheClearError:" + cache.getName())); } }; return cacheErrorHandler; } } =========== 看的一篇博客http://blog.csdn.net/tianyaleixiaowu/article/details/70670329，通过此方法配置后，如果redis出现异常就会进入errorHandler()中的某个方法，使得程序能够继续执行下去查询数据库而不是中断。那么问题来了，我的也同样跟此链接博主代码一样，通过在配置文件故意配置错误连接信息，但是还是会报异常，而没有进入统一异常处理器。怎么破？求大神。。。。。。

1.楼主说的是配置错误的连接信息，而楼主参照的该篇博客是为了针对已经连上redis的情况做的异常处理 2.springboot加载配置类也有先后顺序，如果连接配置在异常拦截配置前加载，有异常拦截当然也不会生效