小白教程
所有教程
关于
Search
172.70.126.51
172.70.126.51
参数设置
贡献
退出
操作
编辑
移动
保护
信息
历史
删除
查看“Java 连接 Memcached 服务”的源代码
本页内容
上一节:
Memcached_flush_all_命令
下一节:
PHP_连接_Memcached_服务
因为以下原因,您没有权限编辑本页:
您请求的操作仅限属于该用户组的用户执行:
用户
您可以查看和复制此页面的源代码。
{{DISPLAYTITLE:Java 连接 Memcached 服务}}[[Category:Memcached 教程|20]] = 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|spymemcached-2.10.3.jar]]。 Google Code jar 包下载地址:[http://code.google.com/p/spymemcached/downloads/list 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: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 关闭连接 mcc.shutdown(); }catch(Exception ex){ System.out.println( ex.getMessage() ); } } } </sample> 该程序中我们使用 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: <sample title="" desc="" lang="memcached" hererun="1"> Connection to server successful. </sample> === set 操作实例 === 以下使用 java.util.concurrent.Future 来存储数据 == MemcachedJava.java 文件: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 存储数据 Future fo = mcc.set("xiaobai", 900, "Free Education"); // 查看存储状态 System.out.println("set status:" + fo.get()); // 输出值 System.out.println("xiaobai value in cache - " + mcc.get("xiaobai")); // 关闭连接 mcc.shutdown(); }catch(Exception ex){ System.out.println( ex.getMessage() ); } } } </sample> 执行程序,输出结果为: <sample title="" desc="" lang="memcached" hererun="1"> Connection to server successful. set status:true xiaobai value in cache - Free Education </sample> === add 操作实例 === == MemcachedJava.java 文件: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 添加数据 Future fo = mcc.set("xiaobai", 900, "Free Education"); // 打印状态 System.out.println("set status:" + fo.get()); // 输出 System.out.println("xiaobai value in cache - " + mcc.get("xiaobai")); // 添加 fo = mcc.add("xiaobai", 900, "memcached"); // 打印状态 System.out.println("add status:" + fo.get()); // 添加新key fo = mcc.add("xiaobai", 900, "All Free Compilers"); // 打印状态 System.out.println("add status:" + fo.get()); // 输出 System.out.println("xiaobai value in cache - " + mcc.get("xiaobai")); // 关闭连接 mcc.shutdown(); }catch(Exception ex){ System.out.println(ex.getMessage()); } } } </sample> === replace 操作实例 === == MemcachedJava.java 文件: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 添加第一个 key=》value 对 Future fo = mcc.set("xiaobai", 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("xiaobai value in cache - " + mcc.get("xiaobai")); // 添加新的 key fo = mcc.replace("xiaobai", 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("xiaobai value in cache - " + mcc.get("xiaobai")); // 关闭连接 mcc.shutdown(); }catch(Exception ex){ System.out.println( ex.getMessage() ); } } } </sample> === append 操作实例 === == MemcachedJava.java 文件: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 添加数据 Future fo = mcc.set("xiaobai", 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("xiaobai value in cache - " + mcc.get("xiaobai")); // 对存在的key进行数据添加操作 fo = mcc.append("xiaobai", 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("xiaobai value in cache - " + mcc.get("xiaobai")); // 关闭连接 mcc.shutdown(); }catch(Exception ex) { System.out.println(ex.getMessage()); ] } } </sample> === prepend 操作实例 === == MemcachedJava.java 文件: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 添加数据 Future fo = mcc.set("xiaobai", 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("xiaobai value in cache - " + mcc.get("xiaobai")); // 对存在的key进行数据添加操作 fo = mcc.prepend("xiaobai", 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("xiaobai value in cache - " + mcc.get("xiaobai")); // 关闭连接 mcc.shutdown(); }catch(Exception ex) { System.out.println(ex.getMessage()); } } } </sample> === CAS 操作实例 === == MemcachedJava.java 文件: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 添加数据 Future fo = mcc.set("xiaobai", 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("xiaobai value in cache - " + mcc.get("xiaobai")); // 通过 gets 方法获取 CAS token(令牌) CASValue casValue = mcc.gets("xiaobai"); // 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("xiaobai", 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("xiaobai value in cache - " + mcc.get("xiaobai")); // 关闭连接 mcc.shutdown(); }catch(Exception ex) { System.out.println(ex.getMessage()); } } } </sample> === get 操作实例 === == MemcachedJava.java 文件: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 添加数据 Future fo = mcc.set("xiaobai", 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("xiaobai value in cache - " + mcc.get("xiaobai")); // 关闭连接 mcc.shutdown(); }catch(Exception ex) { System.out.println(ex.getMessage()); } } } </sample> === gets 操作实例、CAS === == MemcachedJava.java 文件: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 添加数据 Future fo = mcc.set("xiaobai", 900, "Free Education"); // 输出执行 set 方法后的状态 System.out.println("set status:" + fo.get()); // 从缓存中获取键为 xiaobai 的值 System.out.println("xiaobai value in cache - " + mcc.get("xiaobai")); // 通过 gets 方法获取 CAS token(令牌) CASValue casValue = mcc.gets("xiaobai"); // 输出 CAS token(令牌) 值 System.out.println("CAS value in cache - " + casValue); // 关闭连接 mcc.shutdown(); }catch(Exception ex) { System.out.println(ex.getMessage()); } } } </sample> === delete 操作实例 === == MemcachedJava.java 文件: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 添加数据 Future fo = mcc.set("xiaobai", 900, "World's largest online tutorials library"); // 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("xiaobai value in cache - " + mcc.get("xiaobai")); // 对存在的key进行数据添加操作 fo = mcc.delete("xiaobai"); // 输出执行 delete 方法后的状态 System.out.println("delete status:" + fo.get()); // 获取键对应的值 System.out.println("xiaobai value in cache - " + mcc.get("xiaobai")); // 关闭连接 mcc.shutdown(); }catch(Exception ex) { System.out.println(ex.getMessage()); } } } </sample> === Incr/Decr 操作实例 === == MemcachedJava.java 文件: == <sample title="" desc="" lang="memcached" hererun="1"> 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 successful."); // 添加数字值 Future fo = mcc.set("number", 900, "1000"); // 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("value in cache - " + mcc.get("number")); // 自增并输出 System.out.println("value in cache after increment - " + mcc.incr("number", 111)); // 自减并输出 System.out.println("value in cache after decrement - " + mcc.decr("number", 112)); // 关闭连接 mcc.shutdown(); }catch(Exception ex) { System.out.println(ex.getMessage()); } } } </sample>
返回至“
Java 连接 Memcached 服务
”。
上一节:
Memcached_flush_all_命令
下一节:
PHP_连接_Memcached_服务