Ehcache缓存实例

resources 资源中的  ehcache.xml   文件

 

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

    <!-- 磁盘缓存位置 -->
    <diskStore path="java.io.tmpdir/ehcache"/>

    <!-- 默认缓存 -->
    <defaultCache
            maxEntriesLocalHeap="10000"
            eternal="false"
            timeToIdleSeconds="120"
            timeToLiveSeconds="120"
            maxEntriesLocalDisk="10000000"
            diskExpiryThreadIntervalSeconds="120"
            memoryStoreEvictionPolicy="LRU">
        <persistence strategy="localTempSwap"/>
    </defaultCache>

    <!-- helloworld缓存 -->
    <cache name="HelloWorldCache"
           maxElementsInMemory="1000"
           eternal="false"
           timeToIdleSeconds="5"
           timeToLiveSeconds="5"
           overflowToDisk="false"
           memoryStoreEvictionPolicy="LRU"/>
</ehcache>

 

java实现

 

package com.ydy.test;

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

import java.io.File;
import java.io.IOException;

/**
 * @author ydy
 * Create By ydy 
 */
public class CacheTest {
    public static void main(String[] args) {
        // 1. 创建缓存管理器
        CacheTest cacheTest = new CacheTest();
        File file = null;
        try {
            String s = cacheTest.showURL();
             file = new File(s+"/cache/ehcache.xml");
            if (file.exists()) {
                System.out.println("true");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        CacheManager cacheManager = CacheManager.create(file.toString());

        // 2. 获取缓存对象
        Cache cache = cacheManager.getCache("HelloWordCache");

        // 3. 创建元素
        Element element = new Element("key1", "value1");

        // 4. 将元素添加到缓存
        cache.put(element);

        // 5. 获取缓存
        Element value = cache.get("key1");
        System.out.println(value);
        System.out.println(value.getObjectValue());

        // 6. 删除元素
        cache.remove("key1");

        Dog dog = new Dog("1", "taidi","2");
        Element element2 = new Element("taidi", dog);
        cache.put(element2);
        Element value2 = cache.get("taidi");
        Dog dog2 = (Dog) value2.getObjectValue();
        System.out.println(dog2);

        System.out.println(cache.getSize());

        // 7. 刷新缓存
        cache.flush();

        // 8. 关闭缓存管理器
        cacheManager.shutdown();
    }

    public String showURL() throws IOException {
        File f = new File(this.getClass().getResource("/").getPath());
        System.out.println(f);
        return f.toString();
    }
}