新手请教jfinal 使用ehcache的问题，Could not find c?报错

按照jfinal2文档的方法配置ehcache.

Config代码

@Override
	public void configPlugin(Plugins plugins) {
...
		plugins.add(new EhCachePlugin());
...
}

action如下

@Before(CacheInterceptor.class)
	@CacheName("columnList")
	public void index() {
		setAttr("xsPage", Column.dao.findAll());
		setAttr("title", OBJECTNAME + "列表");
...
		render(INDEXPAGE);
	}

<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="ehcache.xsd"
         updateCheck="false" monitoring="autodetect"
         dynamicConfig="true">

    <diskStore path="java.io.tmpdir"/>

    <defaultCache
           maxEntriesLocalHeap="10000"
           eternal="false"
           overflowToDisk="true"
           timeToIdleSeconds="20"
           timeToLiveSeconds="60">
    </defaultCache>
            
    <cache name="columnList"
           maxElementsInMemory="50"
           maxElementsOnDisk="100"
           eternal="false"
           timeToIdleSeconds="3600"
           timeToLiveSeconds="0"
           overflowToDisk="true"
           diskPersistent="true"
            />

</ehcache>

运行时，访问action就报错：

九月 04, 2015 9:04:54 下午 com.jfinal.plugin.ehcache.CacheKit warn
警告: Could not find cache config [columnList], using default.
九月 04, 2015 9:04:54 下午 com.jfinal.core.ActionHandler error
严重: /cms/column
net.sf.ehcache.CacheException: Caches cannot be added by name when default cache config is not specified in the config. Please add a default cache config in the configuration.
	at net.sf.ehcache.CacheManager.addCacheIfAbsent(CacheManager.java:1959)
	at com.jfinal.plugin.ehcache.CacheKit.getOrAddCache(CacheKit.java:48)
	at com.jfinal.plugin.ehcache.CacheKit.get(CacheKit.java:63)
	at com.jfinal.plugin.ehcache.CacheInterceptor.intercept(CacheInterceptor.java:55)
	at com.jfinal.aop.Invocation.invoke(Invocation.java:65)