Java中用Ehcache做缓存处理

Java中用Ehcache做缓存处理

具体创建项目就不多说了。本例是的idea的maven项目中做的测试。

1 添加依赖

在pom.xml添加如下的依赖项

    
        net.sf.ehcache
        ehcache-core
        2.6.6
    

2 添加配置文件ehcache.xml

ehcache.xml保存在src/main/resources/;内空如下：

3 添加缓存处理类,代码如下：

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

import java.net.URL;

/**
 * Created by xxx on 2017/7/29.
 */
public class EhCacheUtil {
    //ehcache.xml 保存在src/main/resources/
    private static final String path = "/ehcache.xml";

    private URL url;

    private CacheManager manager;

    private static EhCacheUtil ehCache;

    private EhCacheUtil(String path) {
        url = getClass().getResource(path);
        manager = CacheManager.create(url);
    }

    public static EhCacheUtil getInstance() {
        if (ehCache == null) {
            ehCache = new EhCacheUtil(path);
        }
        return ehCache;
    }

    public void put(String cacheName, String key, Object value) {
        Cache cache = manager.getCache(cacheName);
        Element element = new Element(key, value);
        cache.put(element);
    }

    public Object get(String cacheName, String key) {
        Cache cache = manager.getCache(cacheName);
        Element element = cache.get(key);
        return element == null ? null : element.getObjectValue();
    }

    public Cache get(String cacheName) {
        return manager.getCache(cacheName);
    }

    public void remove(String cacheName, String key) {
        Cache cache = manager.getCache(cacheName);
        cache.remove(key);
    }
}

4 添加测试类代码如下：

import com.lfb.model.User;

/**
 * Created by xxxon 2017/7/29.
 */
public class EhcacheTest {

    public  static void TestCahce()
    {
        //string测试
        EhCacheUtil.getInstance().put("ehcache001","userEch","test001");
        String val = (String) EhCacheUtil.getInstance().get("ehcache001", "userEch");
        
        //object测试
        User user = new User();
        user.setUserId(1);
        user.setUserName("jack");
        EhCacheUtil.getInstance().put("ehcache001","userJack",user);

        User user2=(User) EhCacheUtil.getInstance().get("ehcache001", "userJack");
        String str="1";
        System.out.print(user2);
    }
}

在入口方法main添加入口

EhcacheTest.TestCahce();

至此代码就ok了，运行测试，发现存取都ok

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