Java 连接 Memcached 服务
使用 Java 程序连接 Memcached 需要在你的 classpath 中添加 Memcached jar 包。
本站 jar 包下载地址:spymemcached-2.10.3.jar。
Google Code jar 包下载地址:spymemcached-2.10.3.jar(需要科学上网)。
以下程序假定 Memcached 服务的主机为 127.0.0.1 端口为 11211。
连接实例
Java 连接 Memcached
MemcachedJava.java 文件:
import net.spy.memcached.MemcachedClient;import java.net.*;public class MemcachedJava {public static void main(String[] args) {try{// 本地连接 Memcached 服务MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));System.out.println("Connection to server sucessful.");// 关闭连接mcc.shutdown();}catch(Exception ex){System.out.println( ex.getMessage() );}}}
该程序中 使用 InetSocketAddress 连接 IP 为 127.0.0.1 端口 为 11211 的 memcached 服务。
执行以上代码 如果连接成功会输出以下信息:
Connection to server successful.
set 操作实例
以下使用 java.util.concurrent.Future 来存储数据
MemcachedJava.java 文件:
import java.net.InetSocketAddress;import java.util.concurrent.Future;import net.spy.memcached.MemcachedClient;public class MemcachedJava {public static void main(String[] args) {try{// 连接本地的 Memcached 服务MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));System.out.println("Connection to server sucessful.");// 存储数据Future fo = mcc.set("facesoho", 900, "Free Education");// 查看存储状态System.out.println("set status:" + fo.get());// 输出值System.out.println("facesoho value in cache - " + mcc.get("facesoho"));// 关闭连接mcc.shutdown();}catch(Exception ex){System.out.println( ex.getMessage() );}}}
执行程序 输出结果为:
Connection to server successful.set status:truefacesoho value in cache - Free Education
add 操作实例
MemcachedJava.java 文件:
import java.net.InetSocketAddress;import java.util.concurrent.Future;import net.spy.memcached.MemcachedClient;public class MemcachedJava {public static void main(String[] args) {try{// 连接本地的 Memcached 服务MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));System.out.println("Connection to server sucessful.");// 添加数据Future fo = mcc.set("facesoho", 900, "Free Education");// 打印状态System.out.println("set status:" + fo.get());// 输出System.out.println("facesoho value in cache - " + mcc.get("facesoho"));// 添加fo = mcc.add("facesoho", 900, "memcached");// 打印状态System.out.println("add status:" + fo.get());// 添加新keyfo = mcc.add("codingground", 900, "All Free Compilers");// 打印状态System.out.println("add status:" + fo.get());// 输出System.out.println("codingground value in cache - " + mcc.get("codingground"));// 关闭连接mcc.shutdown();}catch(Exception ex){System.out.println(ex.getMessage());}}}
replace 操作实例
MemcachedJava.java 文件:
import java.net.InetSocketAddress;import java.util.concurrent.Future;import net.spy.memcached.MemcachedClient;public class MemcachedJava {public static void main(String[] args) {try {//连接本地的 Memcached 服务MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));System.out.println("Connection to server sucessful.");// 添加第个 key=》value 对Future fo = mcc.set("facesoho", 900, "Free Education");// 输出执行 add 方法后的状态System.out.println("add status:" + fo.get());// 获取键对应的值System.out.println("facesoho value in cache - " + mcc.get("facesoho"));// 添加新的 keyfo = mcc.replace("facesoho", 900, "Largest Tutorials' Library");// 输出执行 set 方法后的状态System.out.println("replace status:" + fo.get());// 获取键对应的值System.out.println("facesoho value in cache - " + mcc.get("facesoho"));// 关闭连接mcc.shutdown();}catch(Exception ex){System.out.println( ex.getMessage() );}}}
append 操作实例
MemcachedJava.java 文件:
import java.net.InetSocketAddress;import java.util.concurrent.Future;import net.spy.memcached.MemcachedClient;public class MemcachedJava {public static void main(String[] args) {try{// 连接本地的 Memcached 服务MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));System.out.println("Connection to server sucessful.");// 添加数据Future fo = mcc.set("facesoho", 900, "Free Education");// 输出执行 set 方法后的状态System.out.println("set status:" + fo.get());// 获取键对应的值System.out.println("facesoho value in cache - " + mcc.get("facesoho"));// 对存在的key进行数据添加操作fo = mcc.append("facesoho", 900, " for All");// 输出执行 set 方法后的状态System.out.println("append status:" + fo.get());// 获取键对应的值System.out.println("facesoho value in cache - " + mcc.get("codingground"));// 关闭连接mcc.shutdown();}catch(Exception ex) {System.out.println(ex.getMessage());]}}
prepend 操作实例
MemcachedJava.java 文件:
import java.net.InetSocketAddress;import java.util.concurrent.Future;import net.spy.memcached.MemcachedClient;public class MemcachedJava {public static void main(String[] args) {try{// 连接本地的 Memcached 服务MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));System.out.println("Connection to server sucessful.");// 添加数据Future fo = mcc.set("facesoho", 900, "Education for All");// 输出执行 set 方法后的状态System.out.println("set status:" + fo.get());// 获取键对应的值System.out.println("facesoho value in cache - " + mcc.get("facesoho"));// 对存在的key进行数据添加操作fo = mcc.prepend("facesoho", 900, "Free ");// 输出执行 set 方法后的状态System.out.println("prepend status:" + fo.get());// 获取键对应的值System.out.println("facesoho value in cache - " + mcc.get("codingground"));// 关闭连接mcc.shutdown();}catch(Exception ex) {System.out.println(ex.getMessage());}}}
CAS 操作实例
MemcachedJava.java 文件:
import java.net.InetSocketAddress;import java.util.concurrent.Future;import net.spy.memcached.CASValue;import net.spy.memcached.CASResponse;import net.spy.memcached.MemcachedClient;public class MemcachedJava {public static void main(String[] args) {try{// 连接本地的 Memcached 服务MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));System.out.println("Connection to server sucessful.");// 添加数据Future fo = mcc.set("facesoho", 900, "Free Education");// 输出执行 set 方法后的状态System.out.println("set status:" + fo.get());// 使用 get 方法获取数据System.out.println("facesoho value in cache - " + mcc.get("facesoho"));// 通过 gets 方法获取 CAS token(令牌)CASValue casValue = mcc.gets("facesoho");// 输出 CAS token(令牌) 值System.out.println("CAS token - " + casValue);// 尝试使用cas方法来更新数据CASResponse casresp = mcc.cas("facesoho", casValue.getCas(), 900, "Largest Tutorials-Library");// 输出 CAS 响应信息System.out.println("CAS Response - " + casresp);// 输出值System.out.println("facesoho value in cache - " + mcc.get("facesoho"));// 关闭连接mcc.shutdown();}catch(Exception ex) {System.out.println(ex.getMessage());}}}
get 操作实例
MemcachedJava.java 文件:
import java.net.InetSocketAddress;import java.util.concurrent.Future;import net.spy.memcached.MemcachedClient;public class MemcachedJava {public st
尊贵的董事大人
英文标题不为空时 视为本栏投稿
需要关键字 描述 英文标题