Redis简单实例

来源：互联网发布：寻根文学知乎编辑：程序博客网时间：2024/05/16 08:19
直接上源码有不妥之处望牛人指教！。。。要用到jedis 需要引入两个jar包可在我的资源中直接下载： commons-pool2-2.3.jar jedis-2.4.1.jar
Redis工具类
package com.test.redis;     import java.text.SimpleDateFormat;import java.util.Date; import org.slf4j.Logger;import org.slf4j.LoggerFactory; import redis.clients.jedis.Jedis;import redis.clients.jedis.JedisPool;import redis.clients.jedis.JedisPoolConfig; publicclass JedisUtils {     privatestaticLogger log= LoggerFactory.getLogger(JedisUtils.class);     privatestaticJedisPool pool= null;/**       * 获得连接池       * @param ip       * @paramport       * @return JedisPool       */   publicstatic JedisPoolgetPool(String ip,intport){           if(null == pool){           JedisPoolConfig config = new JedisPoolConfig();         //控制一个pool可分配多少个jedis实例，通过pool.getResource()来获取；         //如果赋值为-1，则表示不限制；如果pool已经分配了maxTotal个jedis实例，则此时pool的状态为exhausted(耗尽)。           config.setMaxTotal(500);         //控制一个pool最多有多少个状态为idle(空闲的)的jedis实例。           config.setMaxIdle(5);         //表示当borrow(引入)一个jedis实例时，最大的等待时间，如果超过等待时间，则直接抛出JedisConnectionException；           config.setMaxWaitMillis(20000);         //在borrow一个jedis实例时，是否提前进行validate操作；如果为true，则得到的jedis实例均是可用的；           config.setTestOnBorrow(true);         pool = new JedisPool(config, ip, port,1500000);         log.info("access ip: {1} port: {2} connect.",newString[]{ip,String.valueOf(port)});                   }      returnpool;     }/**      * 返还到连接池      * @param pool      * @param redis      */   publicstaticvoid  returnSource(JedisPool pool,Jedis redis){      if(null != redis){           pool.returnResource(redis);        }     }     /**      * 获得数据      * @param key      * @return      */   publicstatic StringgetValue(String key){        String value = null;        JedisPool pool = null;        Jedis jedis = null;      try{           pool = getPool("127.0.0.1",6379);           jedis = pool.getResource();           value = jedis.get(key);        }catch(Exception e){           pool.returnBrokenResource(jedis);//释放jedis对象           e.getMessage();        }finally{         returnSource(pool,jedis);//返还到连接池        }      return value;     }   /**      * 字符串转换为日期      * @param dateStr      * @return      * @author      */   publicstatic DateStringToDate(String dateStr){        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");        Date date = null;      try{         if(!"".equals(dateStr)&&null!= dateStr){              date = format.parse(dateStr);           }        }catch(Exception e){         log.info("format dateStr error  "+ e.getMessage());         returnnull;        }      return date;     }   /**      * 日期转换为字符串      * @param dateStr      * @return      */   publicstatic StringdateToString(Date date){        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");       String dateStr = "";      try{         if(null != date){             dateStr = format.format(date);          }       }catch(Exception e){         log.info("format date error "+ e.getMessage());         returnnull;       }      return dateStr;     }}   Redis插入、查询数据测试类 package com.test.redis; import java.util.Date;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.Set; import redis.clients.jedis.Jedis;import redis.clients.jedis.JedisPool; public class RedisTest {       publicstatic JedisPool pool = null;       publicstatic Jedis jedis = null;        publicstatic void main(String[] args) {              pool= JedisUtils.getPool("127.0.0.1", 6379);              jedis= pool.getResource();               insertData(jedis);              selectData(jedis);       }        /**        * 插入5000000条数据的时间计算        *        * @param jedis        */       publicstatic void insertData(Jedis jedis) {               longstart = System.currentTimeMillis();              System.out.println(System.currentTimeMillis());              for(int i = 0; i < 5000000; i++) {                     Map<String,String> hashMap = new HashMap<String, String>();                     hashMap.put("vehicled","" + i);                     hashMap.put("plateNo","No" + i);                     hashMap.put("simNo","No" + i);                     hashMap.put("location","测试测试");                     hashMap.put("sendTime",JedisUtils.dateToString(new Date()));                     hashMap.put("velocity","" + i);                     hashMap.put("longitude","" + i);                     hashMap.put("latitude","" + i);                     hashMap.put("status","" + i);                     hashMap.put("alarmState","" + i);                     jedis.hmset("gpsInfo"+ i, hashMap);              }              System.out.println(System.currentTimeMillis());              longend = System.currentTimeMillis();              System.out.println(end- start);       }              /**        * 查询1000000 条数据的时间计算        *        * @param jedis        */       publicstatic void selectData(Jedis jedis) {               longstart = System.currentTimeMillis();              System.out.println(System.currentTimeMillis());              for(int i = 0; i < 1000000) {                     Map<String,String> map = jedis.hgetAll("gpsInfo" + i);                     Stringvehicled = map.get("vehicled");                     StringplateNo = map.get("plateNo");                     StringsimNo = map.get("simNo");                     Stringlocation = map.get("location");                     StringsendTime = map.get("sendTime");                     Stringvelocity = map.get("velocity");                     Stringlongitude = map.get("longitude");                     Stringlatitude = map.get("latitude");                     Stringstatus = map.get("status");                     StringalarmState = map.get("alarmState");                     System.out.println("vehicled= " + vehicled + "," + "plateNo = "                                   +plateNo + "," + "simNo  =" + simNo + ","                                   +"location  = " + location +"," + "sendTime  = "                                   +sendTime + "," + "velocity = " + velocity + ","                                   +"longitude  = " + longitude +"," + "latitude  = "                                   +latitude + "," + "status = " + status + ","                                   +"alarmState  = " + alarmState);              }              System.out.println(System.currentTimeMillis());              longend = System.currentTimeMillis();              System.out.println(end- start);       }       }}
0 0