<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">  <display-name>SpringMVC-Memcached</display-name>   <!-- 引入 spring -->  <listener>      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>   <context-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath*:/applicationContext*.xml</param-value>  </context-param>    <!-- 引入 springMVC -->  <servlet>      <servlet-name>springMVC</servlet-name>      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>      <init-param>          <param-name>contextConfigLocation</param-name>          <param-value>classpath*:/spring-servlet-config.xml</param-value>      </init-param>  </servlet>    <servlet-mapping>      <servlet-name>springMVC</servlet-name>      <url-pattern>/</url-pattern>  </servlet-mapping>    <!-- 编码 UTF-8 -->  <filter>      <filter-name>SpringMVC-Memcached-Encoding</filter-name>      <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>      <init-param>          <param-name>encoding</param-name>          <param-value>UTF-8</param-value>      </init-param>      <init-param>      <param-name>forceEncoding</param-name>      <param-value>true</param-value>      </init-param>  </filter>  <filter-mapping>      <filter-name>SpringMVC-Memcached-Encoding</filter-name>      <url-pattern>/*</url-pattern>  </filter-mapping>  </web-app>

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"    xsi:schemaLocation="http://www.springframework.org/schema/beans       http://www.springframework.org/schema/beans/spring-beans-3.1.xsd      http://www.springframework.org/schema/context       http://www.springframework.org/schema/context/spring-context-3.1.xsd      http://www.springframework.org/schema/aop       http://www.springframework.org/schema/aop/spring-aop-3.1.xsd      http://www.springframework.org/schema/tx       http://www.springframework.org/schema/tx/spring-tx-3.1.xsd">    <!-- 引入memcached配置文件 -->    <import resource="spring-memcached.xml"/>    </beans>

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:context="http://www.springframework.org/schema/context"    xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:tx="http://www.springframework.org/schema/tx"    xsi:schemaLocation="http://www.springframework.org/schema/beans       http://www.springframework.org/schema/beans/spring-beans-3.1.xsd      http://www.springframework.org/schema/context       http://www.springframework.org/schema/context/spring-context-3.1.xsd      http://www.springframework.org/schema/aop       http://www.springframework.org/schema/aop/spring-aop-3.1.xsd      http://www.springframework.org/schema/tx       http://www.springframework.org/schema/tx/spring-tx-3.1.xsd">            <!-- 客户端：java_memcached-release_2.6.3 -->    <bean id="memcachedPool" class="com.danga.MemCached.SockIOPool" factory-method="getInstance" init-method="initialize" lazy-init="false" destroy-method="shutDown">        <constructor-arg>            <value>memcachedPool</value>        </constructor-arg>        <!-- 可以设置多个memcached服务器 -->        <property name="servers">            <list>                <value>127.0.0.1:11211</value>            </list>        </property>        <!-- 每个服务器初始连接数 -->        <property name="initConn">            <value>20</value>        </property>        <!-- 每个服务器最小连接数 -->        <property name="minConn">            <value>20</value>        </property>        <!-- 每个服务器最大连接数 -->        <property name="maxConn">            <value>1000</value>        </property>        <!-- 主线程睡眠时间 -->        <property name="maintSleep">            <value>30000</value>        </property>        <!-- TCP/Socket的参数，如果是true在写数据时不缓冲，立即发送出去参数 -->        <property name="nagle">            <value>false</value>        </property>        <!-- 连接超时/阻塞读取数据的超时间是 -->        <property name="socketTO">            <value>3000</value>        </property>    </bean>        <bean id="memcachedClient" class="com.danga.MemCached.MemCachedClient" >        <constructor-arg>            <value>memcachedPool</value>        </constructor-arg>    </bean>    </beans>

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"      xmlns:mvc="http://www.springframework.org/schema/mvc"      xmlns:context="http://www.springframework.org/schema/context"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      xsi:schemaLocation="http://www.springframework.org/schema/beans      http://www.springframework.org/schema/beans/spring-beans-3.1.xsd      http://www.springframework.org/schema/context       http://www.springframework.org/schema/context/spring-context-3.1.xsd      http://www.springframework.org/schema/mvc      http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">          <!-- 使用@Controllers前配置 -->    <mvc:annotation-driven />                    <!-- 容器加载时 自动扫描所有注解 -->    <context:component-scan base-package="com.test" use-default-filters="false">        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />        <context:include-filter type="annotation" expression="org.springframework.stereotype.Service" />        <context:include-filter type="annotation" expression="org.springframework.stereotype.Repository" />        <context:include-filter type="annotation" expression="org.springframework.stereotype.Component" />    </context:component-scan>               <!-- 配置静态资源  -->        <mvc:resources mapping="/js/**" location="/js/" />      <mvc:resources mapping="/image/**" location="/image/" />     <mvc:resources mapping="/css/**" location="/css/" />               <!-- 使用jsp作为视图 -->    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="viewClass">            <value>org.springframework.web.servlet.view.JstlView</value>        </property>        <!-- 目标路径返回到pages下 使用jsp作为视图 -->        <property name="prefix" value="http://www.mamicode.com/pages/"></property>        <property name="suffix" value="http://www.mamicode.com/.jsp"></property>    </bean>            <!-- 异常处理 -->    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">            <property name="exceptionMappings">                <props>                    <prop key="org.apache.shiro.authz.UnauthorizedException">error/403</prop>                </props>            </property>        </bean>    </beans>

package com.test.utils;import java.io.BufferedWriter;import java.io.FileWriter;import java.io.IOException;import java.io.PrintWriter;import java.io.StringWriter;import java.lang.management.ManagementFactory;import java.lang.management.RuntimeMXBean;import java.text.SimpleDateFormat;import java.util.Date;import org.apache.log4j.Logger;import com.danga.MemCached.MemCachedClient;public class MemcachedUtils {    private static final Logger logger = Logger.getLogger(MemcachedUtils.class);      private static MemCachedClient cachedClient;      static {          if (cachedClient == null)              cachedClient = new MemCachedClient("memcachedPool");      }        private MemcachedUtils() {}        /**      * 向缓存添加新的键值对。如果键已经存在，则之前的值将被替换。      *       * @param key      *            键      * @param value      *            值      * @return      */      public static boolean set(String key, Object value) {          return setExp(key, value, null);      }        /**      * 向缓存添加新的键值对。如果键已经存在，则之前的值将被替换。      *       * @param key      *            键      * @param value      *            值      * @param expire      *            过期时间 New Date(1000*10)：十秒后过期      * @return      */      public static boolean set(String key, Object value, Date expire) {          return setExp(key, value, expire);      }        /**      * 向缓存添加新的键值对。如果键已经存在，则之前的值将被替换。      *       * @param key      *            键      * @param value      *            值      * @param expire      *            过期时间 New Date(1000*10)：十秒后过期      * @return      */      private static boolean setExp(String key, Object value, Date expire) {          boolean flag = false;          try {              flag = cachedClient.set(key, value, expire);          } catch (Exception e) {              // 记录Memcached日志              MemcachedLog.writeLog("Memcached set方法报错，key值：" + key + "\r\n" + exceptionWrite(e));          }          return flag;      }        /**      * 仅当缓存中不存在键时，add 命令才会向缓存中添加一个键值对。      *       * @param key      *            键      * @param value      *            值      * @return      */      public static boolean add(String key, Object value) {          return addExp(key, value, null);      }        /**      * 仅当缓存中不存在键时，add 命令才会向缓存中添加一个键值对。      *       * @param key      *            键      * @param value      *            值      * @param expire      *            过期时间 New Date(1000*10)：十秒后过期      * @return      */      public static boolean add(String key, Object value, Date expire) {          return addExp(key, value, expire);      }        /**      * 仅当缓存中不存在键时，add 命令才会向缓存中添加一个键值对。      *       * @param key      *            键      * @param value      *            值      * @param expire      *            过期时间 New Date(1000*10)：十秒后过期      * @return      */      private static boolean addExp(String key, Object value, Date expire) {          boolean flag = false;          try {              flag = cachedClient.add(key, value, expire);          } catch (Exception e) {              // 记录Memcached日志              MemcachedLog.writeLog("Memcached add方法报错，key值：" + key + "\r\n" + exceptionWrite(e));          }          return flag;      }        /**      * 仅当键已经存在时，replace 命令才会替换缓存中的键。      *       * @param key      *            键      * @param value      *            值      * @return      */      public static boolean replace(String key, Object value) {          return replaceExp(key, value, null);      }        /**      * 仅当键已经存在时，replace 命令才会替换缓存中的键。      *       * @param key      *            键      * @param value      *            值      * @param expire      *            过期时间 New Date(1000*10)：十秒后过期      * @return      */      public static boolean replace(String key, Object value, Date expire) {          return replaceExp(key, value, expire);      }        /**      * 仅当键已经存在时，replace 命令才会替换缓存中的键。      *       * @param key      *            键      * @param value      *            值      * @param expire      *            过期时间 New Date(1000*10)：十秒后过期      * @return      */      private static boolean replaceExp(String key, Object value, Date expire) {          boolean flag = false;          try {              flag = cachedClient.replace(key, value, expire);          } catch (Exception e) {              MemcachedLog.writeLog("Memcached replace方法报错，key值：" + key + "\r\n" + exceptionWrite(e));          }          return flag;      }        /**      * get 命令用于检索与之前添加的键值对相关的值。      *       * @param key      *            键      * @return      */      public static Object get(String key) {          Object obj = null;          try {              obj = cachedClient.get(key);          } catch (Exception e) {              MemcachedLog.writeLog("Memcached get方法报错，key值：" + key + "\r\n" + exceptionWrite(e));          }          return obj;      }        /**      * 删除 memcached 中的任何现有值。      *       * @param key      *            键      * @return      */      public static boolean delete(String key) {          return deleteExp(key, null);      }        /**      * 删除 memcached 中的任何现有值。      *       * @param key      *            键      * @param expire      *            过期时间 New Date(1000*10)：十秒后过期      * @return      */      public static boolean delete(String key, Date expire) {          return deleteExp(key, expire);      }        /**      * 删除 memcached 中的任何现有值。      *       * @param key      *            键      * @param expire      *            过期时间 New Date(1000*10)：十秒后过期      * @return      */      private static boolean deleteExp(String key, Date expire) {          boolean flag = false;          try {              flag = cachedClient.delete(key, expire);          } catch (Exception e) {              MemcachedLog.writeLog("Memcached delete方法报错，key值：" + key + "\r\n" + exceptionWrite(e));          }          return flag;      }        /**      * 清理缓存中的所有键/值对      *       * @return      */      public static boolean flashAll() {          boolean flag = false;          try {              flag = cachedClient.flushAll();          } catch (Exception e) {              MemcachedLog.writeLog("Memcached flashAll方法报错\r\n" + exceptionWrite(e));          }          return flag;      }        /**      * 返回异常栈信息，String类型      *       * @param e      * @return      */      private static String exceptionWrite(Exception e) {          StringWriter sw = new StringWriter();          PrintWriter pw = new PrintWriter(sw);          e.printStackTrace(pw);          pw.flush();          return sw.toString();      }        /**      *       * @ClassName: MemcachedLog      * @Description: Memcached日志记录      * @author yinjw      * @date 2014-6-18 下午5:01:37      *       */      private static class MemcachedLog {          private final static String MEMCACHED_LOG = "D:\\memcached.log";          private final static String LINUX_MEMCACHED_LOG = "/usr/local/logs/memcached.log";          private static FileWriter fileWriter;          private static BufferedWriter logWrite;          // 获取PID，可以找到对应的JVM进程          private final static RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();          private final static String PID = runtime.getName();            /**          * 初始化写入流          */          static {              try {                  String osName = System.getProperty("os.name");                  if (osName.indexOf("Windows") == -1) {                      fileWriter = new FileWriter(MEMCACHED_LOG, true);                  } else {                      fileWriter = new FileWriter(LINUX_MEMCACHED_LOG, true);                  }                  logWrite = new BufferedWriter(fileWriter);              } catch (IOException e) {                  logger.error("memcached 日志初始化失败", e);                  closeLogStream();              }          }            /**          * 写入日志信息          *           * @param content          *            日志内容          */          public static void writeLog(String content) {              try {                  logWrite.write("[" + PID + "] " + "- [" + new SimpleDateFormat("yyyy年-MM月-dd日 hh时:mm分:ss秒").format(new Date().getTime()) + "]\r\n"                          + content);                  logWrite.newLine();                  logWrite.flush();              } catch (IOException e) {                  logger.error("memcached 写入日志信息失败", e);              }          }            /**          * 关闭流          */          private static void closeLogStream() {              try {                  fileWriter.close();                  logWrite.close();              } catch (IOException e) {                  logger.error("memcached 日志对象关闭失败", e);              }          }      }  }

<%@ page language="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><script type="text/javascript" src="http://www.mamicode.com/${pageContext.request.contextPath }/js/jquery/jquery-1.8.0.min.js"></script><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>Insert title here</title></head><body>    <div><font color="red" size="10px">${returnMsg}</font></div>    <form action="${pageContext.request.contextPath }/loginController/login" method="post" name="loginForm" id="loginForm">        <div>            用户名：<input class="username" type="text" id="username" name="username"  value=http://www.mamicode.com/‘‘/>"color: #000000;">            密码：<input class="password" type="password" id="password" name="password" value=""/>        </div>        <div><input type="button" value="http://www.mamicode.com/submit" onclick="login()" /></div>    </form> <script type="text/javascript">        function login(){        var username = $("#username").val();        var password = $("#password").val();        $("#loginForm").submit();    }    document.onkeydown=function(event){         e = event ? event :(window.event ? window.event : null);         if(e.keyCode==13){             login();        }     }     </script></body></html>

package com.test.web;import java.util.Date;import javax.servlet.http.HttpSession;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.servlet.ModelAndView;import com.test.utils.MemcachedUtils;@Controller@RequestMapping("/loginController")public class Login {        @RequestMapping("/login")    public ModelAndView login(            @RequestParam(value = "username") String userid,            @RequestParam(value = "password") String passwd, HttpSession session){                ModelAndView m = new ModelAndView();        m.setViewName("../index");                MemcachedUtils.set("wasd", "12ab",new Date(1000 * 60));        Object ss = MemcachedUtils.get("wasd");                System.out.println(ss.toString());        m.addObject("returnMsg","好的！");        return m;    }    }

Memecached JavaClient在使用前需初始化SockIOPool,该类只有一个protected的构造方法,因此外部需使用其提供的静态方法getInstance来获取SockIOPool实例,getInstance方法允许传入poolname来指明SockIOPool名称. SockIOPool本身只是作为SchoonerSockIOPool的代理类,SchoonerSockIOPool内维护了一个连接池Map，其中poolname作为key,Pool实例作为值.因此在使用Spring整合Memcacheds时,如果在Spring配置文件中指明了poolname，则在初始化MemecachedClient时，需要在其构造函数中指明poolname.,如果没有声明poolname,则MemechachedClient则或获取名为default的Pool实例.如以下配置,必须在实例化MemechacedClient时传入poolname.否则将无法进行数据操作或数据操作无效。Spring配置文件,该配置文件声明了SockIOPool，由于该类的构造方法为protected类型,无法直接访问,因此需要使用工厂方法getInstance()来获取其实例,注:此处的<constructor-arg>标签不是作为构造函数的参数,而是作为工厂方法getInstance()的参数,即指明poolname为memcache    <bean id="memcache" class="com.whalin.MemCached.SockIOPool" factory-method="getInstance" init-method="initialize" destroy-method="shutDown">          <constructor-arg>              <value>memcache</value>          </constructor-arg></span></strong></em></span>          <property name="servers">              <list>                  <value>${memcache.server}</value>              </list>          </property>          <property name="initConn">              <value>${memcache.initConn}</value>          </property>          <property name="minConn">              <value>${memcache.minConn}</value>          </property>          <property name="maxConn">              <value>${memcache.maxConn}</value>          </property>          <property name="maintSleep">              <value>${memcache.maintSleep}</value>          </property>          <property name="nagle">              <value>${memcache.nagle}</value>          </property>          <property name="socketTO">              <value>${memcache.socketTO}</value>          </property>      </bean>  在使用memcachedClient访问memchached时,需指明poolname为memcache(默认为default,但配置文件中没有对default进行配置)        MemCachedClient memCachedClient = new MemCachedClient("memcache");          memCachedClient.set("name", "simple");          System.out.println(memCachedClient.get("name"));  此处实例化MemCachedClient时,必须传入参数‘memcache’类指明pool实例名称,否则在插入的时候不报错,但读取的值始终为null