java中访问memcache

用spy和memcached for java两种方式对memcache进行操作

一、spy

package com.test.memcache;

import java.net.InetSocketAddress;
import java.util.concurrent.Future;
import net.spy.memcached.MemcachedClient;

/**
* 本类用的包是memcached-2.4.1.jar
* 下载地址： http://code.google.com/p/spymemcached/
*/
public class SpyTest {
public void putObject() {
try {
/* 建立MemcachedClient 实例，并指定memcached服务的IP地址和端口号 */
MemcachedClient mc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));
Future<Boolean> b = null;


/* 将key值，过期时间(秒)和要缓存的对象set到memcached中 */
b = mc.set("key1", 60, "hello1"); // 如果以前存在，则会自动覆盖

if (b.get().booleanValue() == true) {
mc.shutdown();
}

} catch (Exception ex) {
ex.printStackTrace();
}
}

public void getObject() {
try {
/* 建立MemcachedClient 实例，并指定memcached服务的IP地址和端口号 */
MemcachedClient mc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));
/* 按照key值从memcached中查找缓存，不存在则返回null */
Object b = mc.get("key1");
System.out.println(b);
mc.shutdown();
} catch (Exception ex) {
ex.printStackTrace();
}
}

public static void main(String[] args) {
}
}

二、memcached for java

package com.test.memcache;

import com.danga.MemCached.MemCachedClient;
import com.danga.MemCached.SockIOPool;

/**
* 本类用的是java_memcached-release-2.5.1.jar包
* 下载地址： http://github.com/gwhalin/Memcached-Java-Client/downloads
*
* @author Administrator
*
*/
public class MemcachedTest {
String[] servers = { "127.0.0.1:11211" };

Integer[] weights = { 3 };
MemCachedClient mcc = new MemCachedClient();
// 创建一个实例对象SockIOPool
SockIOPool pool = SockIOPool.getInstance();

public MemcachedTest() {
pool.setServers(servers);
pool.setWeights(weights);

pool.setInitConn(5);
pool.setMinConn(5);
pool.setMaxConn(250);
pool.setMaxIdle(30);

pool.setMaintSleep(30);
pool.initialize();
}

public void putObject() {
for (int i = 1; i < 10; i++) {
Boolean b = mcc.add("key" + i, "hi, michael" + i); // 如果以前存在，则不去更新
System.out.println("key" + i + b);
}
}

public void replaceObject() {
Boolean b = mcc.replace("key2", "hi, tom"); // 如果key不存在，则返回flase，更新失败
System.out.println("update " + b);
}

public void getObject() {
Object obj = mcc.get("key2");
System.out.println(obj);
}


public static void main(String args[]) {
MemcachedTest tc = new MemcachedTest();
// tc.putObject();
// tc.replaceObject();
tc.getObject();

tc.pool.shutDown();

}
}