Ehcacheはhttp://ehcache.org/documentation/2.8/operations/logging[SLF4jロギングを使用]であり、ログを記録し、プロジェクトのクラスパスにslf4j実装を置く。この例ではlogbackを使用する。

使用されるツール:

  1. Ehcache 2.9

  2. Maven 3

  3. ログバック1.0.13

1.プロジェクトのディレクトリ構造


ehcache-logging-1、width = 463、height = 392

プロジェクトの依存関係

pom.xml

    <dependency>
        <groupId>net.sf.ehcache</groupId>
        <artifactId>ehcache</artifactId>
        <version>2.9.0</version>
    </dependency>
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>1.0.13</version>
    </dependency>

3. Logback.xml


logback.xml`ファイルを作成し、

src/main/resources`フォルダに入れます。

logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

   //Log everything to console
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
      <layout class="ch.qos.logback.classic.PatternLayout">
        <Pattern>
            %d{yyyy-MM-dd HH:mm:ss}[%thread]%-5level %logger{36} - %msg%n
        </Pattern>
      </layout>
    </appender>

    <logger name="com.mkyong.cache" level="debug"
        additivity="false">
        <appender-ref ref="STDOUT"/>
    </logger>

    <root level="error">
        <appender-ref ref="STDOUT"/>
    </root>

</configuration>

4.ロギング

シンプルなJava Ehcacheの例。

HelloEhCache.java

package com.mkyong.cache;

import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Element;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HelloEhCache{

    private final static Logger logger = LoggerFactory.getLogger(HelloEhCache.class);

    public static void main(String[]args) {

        logger.debug("Starting Ehcache...");

        CacheManager cm = CacheManager.getInstance();
        cm.addCache("cache1");
        Cache cache = cm.getCache("cache1");

        cache.put(new Element("1","Jan"));
        cache.put(new Element("2","Feb"));
        cache.put(new Element("3","Mar"));

        logger.debug("cache : {}", cache);

        Element ele = cache.get("2");

        String output = (ele == null ? null : ele.getObjectValue().toString());
        System.out.println(output);

        logger.debug("element : {}", ele);

        cm.shutdown();
        logger.debug("Shutting down Ehcache...");
    }

}

出力

2015-01-20 07:35:13[main]DEBUG com.mkyong.cache.HelloEhCache - Starting Ehcache...
2015-01-20 07:35:14[main]DEBUG com.mkyong.cache.HelloEhCache - cache :[name = cache1 status = STATUS__ALIVE eternal = false overflowToDisk = true maxEntriesLocalHeap = 10000 maxEntriesLocalDisk = 10000000 memoryStoreEvictionPolicy = LRU timeToLiveSeconds = 120 timeToIdleSeconds = 120 persistence = LOCALTEMPSWAP diskExpiryThreadIntervalSeconds = 120 cacheEventListeners: ; orderedCacheEventListeners:  maxBytesLocalHeap = 0 overflowToOffHeap = false maxBytesLocalOffHeap = 0 maxBytesLocalDisk = 0 pinned = false]Feb
2015-01-20 07:35:14[main]DEBUG com.mkyong.cache.HelloEhCache - element :[key = 2, value=Feb, version=1, hitCount=1, CreationTime = 1421710514063, LastAccessTime = 1421710514063]2015-01-20 07:35:14[main]DEBUG com.mkyong.cache.HelloEhCache - Shutting down Ehcache...

トータルデバッグモードに変更されました:

logback.xml

    <root level="debug">
        <appender-ref ref="STDOUT"/>
    </root>

出力

07:34:38,892 |-INFO in ch.qos.logback.classic.LoggerContext[default]- Could NOT find resource[logback.groovy]07:34:38,892 |-INFO in ch.qos.logback.classic.LoggerContext[default]- Could NOT find resource[logback-test.xml]07:34:38,892 |-INFO in ch.qos.logback.classic.LoggerContext[default]- Found resource[logback.xml]at[file:/C:/Users/mkyong/workspace2/JavaCache/target/classes/logback.xml]07:34:38,939 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
07:34:38,939 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type[ch.qos.logback.core.ConsoleAppender]07:34:38,955 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as[STDOUT]07:34:39,001 |-WARN in ch.qos.logback.core.ConsoleAppender[STDOUT]- This appender no longer admits a layout as a sub-component, set an encoder instead.
07:34:39,001 |-WARN in ch.qos.logback.core.ConsoleAppender[STDOUT]- To ensure compatibility, wrapping your layout in LayoutWrappingEncoder.
07:34:39,001 |-WARN in ch.qos.logback.core.ConsoleAppender[STDOUT]- See also http://logback.qos.ch/codes.html#layoutInsteadOfEncoder for details
07:34:39,001 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger[com.mkyong.cache]to DEBUG
07:34:39,001 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting additivity of logger[com.mkyong.cache]to false
07:34:39,001 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named[STDOUT]to Logger[com.mkyong.cache]07:34:39,001 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to DEBUG
07:34:39,001 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named[STDOUT]to Logger[ROOT]07:34:39,001 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
07:34:39,001 |-INFO in [email protected] - Registering current configuration as safe fallback point

2015-01-20 07:34:39[main]DEBUG com.mkyong.cache.HelloEhCache - Starting Ehcache...
2015-01-20 07:34:39[main]WARN  n.s.e.config.ConfigurationFactory - No configuration found. Configuring ehcache from ehcache-failsafe.xml  found in the classpath: jar:file:/G:/maven/repo/net/sf/ehcache/ehcache/2.9.0/ehcache-2.9.0.jar!/ehcache-failsafe.xml
2015-01-20 07:34:39[main]DEBUG n.s.e.config.ConfigurationFactory - Configuring ehcache from URL: jar:file:/G:/maven/repo/net/sf/ehcache/ehcache/2.9.0/ehcache-2.9.0.jar!/ehcache-failsafe.xml
2015-01-20 07:34:39[main]DEBUG n.s.e.config.ConfigurationFactory - Configuring ehcache from InputStream
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.config.BeanHandler - Ignoring ehcache attribute xmlns:xsi
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.config.BeanHandler - Ignoring ehcache attribute xsi:noNamespaceSchemaLocation
2015-01-20 07:34:39[main]DEBUG n.s.e.config.DiskStoreConfiguration - Disk Store Path: C:\Users\mkyong\AppData\Local\Temp\
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.CacheManager - Creating new CacheManager with default config
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.util.PropertyUtil - propertiesString is null.
2015-01-20 07:34:39[main]DEBUG n.s.e.config.ConfigurationHelper - No CacheManagerEventListenerFactory class specified. Skipping...
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.Cache - No BootstrapCacheLoaderFactory class specified. Skipping...
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.Cache - CacheWriter factory not configured. Skipping...
2015-01-20 07:34:39[main]DEBUG n.s.e.config.ConfigurationHelper - No CacheExceptionHandlerFactory class specified. Skipping...
2015-01-20 07:34:39[main]WARN  net.sf.ehcache.DiskStorePathManager - diskStorePath 'C:\Users\mkyong\AppData\Local\Temp' is already used by an existing CacheManager either in the same VM or in a different process.
The diskStore path for this CacheManager will be set to C:\Users\mkyong\AppData\Local\Temp\ehcache__auto__created8095047663436693875diskstore.
To avoid this warning consider using the CacheManager factory methods to create a singleton CacheManager or specifying a separate ehcache configuration (ehcache.xml) for each CacheManager instance.
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.DiskStorePathManager - Using diskstore path C:\Users\mkyong\AppData\Local\Temp\ehcache__auto__created8095047663436693875diskstore
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.DiskStorePathManager - Holding exclusive lock on C:\Users\mkyong\AppData\Local\Temp\ehcache__auto__created8095047663436693875diskstore\.ehcache-diskstore.lock
2015-01-20 07:34:39[main]DEBUG n.s.e.store.disk.DiskStorageFactory - Failed to delete file cache1.data
2015-01-20 07:34:39[main]DEBUG n.s.e.store.disk.DiskStorageFactory - Failed to delete file cache1.index
2015-01-20 07:34:39[main]DEBUG n.s.e.store.disk.DiskStorageFactory - Matching data file missing (or empty) for index file. Deleting index file C:\Users\mkyong\AppData\Local\Temp\ehcache__auto__created8095047663436693875diskstore\cache1.index
2015-01-20 07:34:39[main]DEBUG n.s.e.store.disk.DiskStorageFactory - Failed to delete file cache1.index
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Pass-Through Statistic: LOCAL__OFFHEAP__SIZE
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Pass-Through Statistic: LOCAL__OFFHEAP__SIZE__BYTES
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Pass-Through Statistic: WRITER__QUEUE__LENGTH
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Pass-Through Statistic: REMOTE__SIZE
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Pass-Through Statistic: LAST__REJOIN__TIMESTAMP
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Operation Statistic: OFFHEAP__GET
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Operation Statistic: OFFHEAP__PUT
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Operation Statistic: OFFHEAP__REMOVE
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Operation Statistic: XA__COMMIT
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Operation Statistic: XA__ROLLBACK
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Operation Statistic: XA__RECOVERY
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Operation Statistic: CLUSTER__EVENT
2015-01-20 07:34:39[main]DEBUG n.s.e.s.e.ExtendedStatisticsImpl - Mocking Operation Statistic: NONSTOP
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.Cache - Initialised cache: cache1
2015-01-20 07:34:39[main]DEBUG n.s.e.config.ConfigurationHelper - CacheDecoratorFactory not configured for defaultCache. Skipping for 'cache1'.
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.store.disk.Segment - put added 0 on heap
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.store.disk.Segment - put added 0 on heap
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.store.disk.Segment - put added 0 on heap
2015-01-20 07:34:39[main]DEBUG com.mkyong.cache.HelloEhCache - cache :[name = cache1 status = STATUS__ALIVE eternal = false overflowToDisk = true maxEntriesLocalHeap = 10000 maxEntriesLocalDisk = 10000000 memoryStoreEvictionPolicy = LRU timeToLiveSeconds = 120 timeToIdleSeconds = 120 persistence = LOCALTEMPSWAP diskExpiryThreadIntervalSeconds = 120 cacheEventListeners: ; orderedCacheEventListeners:  maxBytesLocalHeap = 0 overflowToOffHeap = false maxBytesLocalOffHeap = 0 maxBytesLocalDisk = 0 pinned = false]Feb
2015-01-20 07:34:39[main]DEBUG com.mkyong.cache.HelloEhCache - element :[key = 2, value=Feb, version=1, hitCount=1, CreationTime = 1421710479220, LastAccessTime = 1421710479220]2015-01-20 07:34:39[cache1.data]DEBUG net.sf.ehcache.store.disk.Segment - fault removed 0 from heap
2015-01-20 07:34:39[cache1.data]DEBUG net.sf.ehcache.store.disk.Segment - fault added 0 on disk
2015-01-20 07:34:39[cache1.data]DEBUG net.sf.ehcache.store.disk.Segment - fault removed 0 from heap
2015-01-20 07:34:39[cache1.data]DEBUG net.sf.ehcache.store.disk.Segment - fault added 0 on disk
2015-01-20 07:34:39[cache1.data]DEBUG net.sf.ehcache.store.disk.Segment - fault removed 0 from heap
2015-01-20 07:34:39[cache1.data]DEBUG net.sf.ehcache.store.disk.Segment - fault added 0 on disk
2015-01-20 07:34:39[main]DEBUG n.s.e.store.disk.DiskStorageFactory - Failed to delete file cache1.index
2015-01-20 07:34:39[main]DEBUG n.s.e.store.disk.DiskStorageFactory - Failed to delete file cache1.data
2015-01-20 07:34:39[main]DEBUG net.sf.ehcache.DiskStorePathManager - Deleted directory ehcache__auto__created8095047663436693875diskstore
2015-01-20 07:34:39[main]DEBUG com.mkyong.cache.HelloEhCache - Shutting down Ehcache...

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