redis的学习知识点
redis安装参考文档：
redis的介绍:
redis中命令行窗口列出所有key的命令：redis-cli keys '*' //keys和*之间是有一个空格的，亲~~~一定要注意哦！
配置文件：
data-source.xml ：
<?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:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <context:property-placeholder location="classpath:spring/redis.properties"/> <context:component-scan base-package="com.bestpay.redis"> </context:component-scan> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxActive" value="50"/> <property name="maxIdle" value="8"/> <property name="maxWait" value="1000"/> <property name="testOnBorrow" value="true"/> <property name="testOnReturn" value="true"/> <!-- <property name="testWhileIdle" value="true"/> --> </bean> <bean id="shardedJedisPool" class="redis.clients.jedis.ShardedJedisPool" scope="singleton"> <constructor-arg index="0" ref="jedisPoolConfig"/> <constructor-arg index="1"> <list> <bean class="redis.clients.jedis.JedisShardInfo"> <constructor-arg name="host" value="${redis.host}"/> <constructor-arg name="port" value="${redis.port}"/> <constructor-arg name="timeout" value="${redis.timeout}"/> <constructor-arg name="weight" value="1"/> </bean> ............................... 配置多个redis服务器（保证redis服务的正常提供） <bean class="redis.clients.jedis.JedisShardInfo"> <constructor-arg name="host" value="${redis.host}"/> <constructor-arg name="port" value="${redis.port}"/> <constructor-arg name="timeout" value="${redis.timeout}"/> <constructor-arg name="weight" value="1"/> </bean> </list> </constructor-arg> </bean> </beans>
redis.properties：
redis.host=127.0.0.1
redis.port=6379
redis.pass=foobared
redis.maxIdle=300
redis.maxActive=600
redis.maxWait=1000
redis.testOnBorrow=true
redis.timeout=300
import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.springframework.stereotype.Repository; import redis.clients.jedis.ShardedJedis; import java.util.Scanner; @Repository("redisClientTemplate") public class RedisClientTemplate { private static final Logger log = LoggerFactory.getLogger(RedisClientTemplate.class); private final static int seconds = 1 * 60; //超时失效时间：5秒钟 @Autowired private RedisDataSource redisDataSource; static RedisClientTemplate redisClient = null; static{ ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:spring/data-source.xml"); redisClient = (RedisClientTemplate)ac.getBean("redisClientTemplate"); } public void disconnect() { ShardedJedis shardedJedis = redisDataSource.getRedisClient(); shardedJedis.disconnect(); } /** * 设置单个值 * @param key * @param value * @return */ public String set(String key ,String value){ String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.set(key, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 获取单个值 * * @param key * @return */ public String get(String key) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.get(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 在某段时间后实现 * * @param key * @param seconds * @return */ public Long expire(String key, int seconds) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.expire(key, seconds); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 判断一个KEY是否存在 * @param key * @return */ public boolean exists(String key) { boolean result = false; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return false; } boolean broken = false; try { result = shardedJedis.exists(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 获得生存时间 * @param key * @return */ public Long tes(String key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.tes(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public static void main(String[] args) throws Exception { // redisClient.saveValue2Redis("authCodeKey","123456"); // System.out.println("5秒钟之前;"+redisClient.1getRedisValue("bbb")); // Thread.sleep(6000); // System.out.println("5秒钟之后;"+redisClient.getRedisValue("bbb")); while(true) { System.out.println("请输入验证码..."); Scanner scanner = new Scanner(System.in); String authCode = scanner.nextLine(); boolean flg = isLockedCardByAuthCode(authCode,"authCodeKey","1111111111"); if(flg){ log.debug("您的验证码正确，请继续操作后续流程"); break; }else{ log.debug("您的验证码有问题，或者卡号被锁定"); } } } /** * * @param key * @param value * @return */ public void saveValue2Redis(String key,String value){ redisClient.set(key, value); redisClient.expire(key,seconds); } public void saveValue2Redis(String key,String value,int time ){ redisClient.set(key, value); redisClient.expire(key,time); } /** * * @param key * @return */ public String getRedisValue(String key) { boolean exists =redisClient.exists(key); if(exists) { //log.debug("key对应的value未失效"); return redisClient.get(key); }else{ //log.debug("key对应的value已失效"); return null; } } /** * 删除key值 * @param key */ public Long delKey(String key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.del(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * * @param authCode * @return */ public static boolean isLockedCardByAuthCode(String authCode,String authKey,String cardNo){ log.debug("输入验证码;{}",authCode); String redisAuthCode = redisClient.getRedisValue(authKey); log.debug("redis验证码;{}",redisAuthCode); if(redisAuthCode==null){ log.debug("验证码失效"); return false; } //判断此卡是否被锁定了 String isExistLockedCard = redisClient.get(cardNo.substring(cardNo.length()-4)); if(isExistLockedCard!=null) { log.debug("此卡:{},已经被锁定,请在1分钟之后再做支付操作",cardNo); return false; } if(!redisAuthCode.equals(authCode)) { String cardNoTimes = redisClient.getRedisValue(cardNo); int times = (cardNoTimes==null? 0:Integer.parseInt(redisClient.getRedisValue(cardNo))); if(times != 0) { if(times >= 5) { log.debug("输入验证码错误次数超过5次,当前次数:{}",times+1); log.debug("锁定此卡1分钟,卡号:{}:",cardNo); //用卡号后4位做为存储被锁定卡的key redisClient.saveValue2Redis(cardNo.substring(cardNo.length()-4),cardNo,1); return false; } log.debug("累计验证码错误次数:{},卡号:{}",String.valueOf(times+1),cardNo); //用卡号做为存储被锁定卡的key redisClient.saveValue2Redis(cardNo,String.valueOf(times+1)); return false; }else{ log.debug("首次输入验证码错误，开始次数入库"); //用卡号做为存储被锁定卡的key redisClient.saveValue2Redis(cardNo,"1"); return false; } }else{ log.debug("验证码正确，通过"); redisClient.delKey(cardNo.substring(cardNo.length()-4)); redisClient.delKey(cardNo); } return true; }
自我步骤，欢迎拍砖！
