[Java] Java连接redis及基本操作示例

<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelversion>4.0.0</modelversion>
 <groupid>testredis</groupid>
 <artifactid>testredis</artifactid>
 <version>0.0.1-snapshot</version>
 <build/>
 <dependencies>
  <!-- redis nosql 操作依赖 -->
  <dependency>
    <groupid>redis.clients</groupid>
    <artifactid>jedis</artifactid>
    <version>2.1.0</version>
  </dependency>
 </dependencies>
</project>

package com.crisy.redis;
import java.util.arraylist;
import java.util.iterator;
import java.util.list;
import java.util.set;
import redis.clients.jedis.jedis;
import redis.clients.jedis.jedispool;
import redis.clients.jedis.jedispoolconfig;
import redis.clients.jedis.jedisshardinfo;
import redis.clients.jedis.shardedjedis;
import redis.clients.jedis.shardedjedispool;
public class redisclient {
 /**
 * 一般项目基本都使用非切片池；
 * 切片池主要用于分布式项目，可以设置主从redis库
 */
 private jedis jedis;//非切片客户端连接
 private jedispool jedispool;//非切片连接池
 private shardedjedis shardedjedis;//切片客户端连接
 private shardedjedispool shardedjedispool;//切片连接池
 
 public redisclient(){ 
  initialpool(); //初始化非切片连接池
  initialshardedpool(); //初始化切片连接池
  shardedjedis = shardedjedispool.getresource(); 
  jedis = jedispool.getresource(); 
  }
 private void initialpool() {
 jedispoolconfig config = new jedispoolconfig();
 config.setmaxactive(20);
 config.setmaxidle(5);
 config.setmaxwait(100001);
 config.settestonborrow(false);
 jedispool = new jedispool(config,"127.0.0.1",6379);
 } 
 
 private void initialshardedpool() {
 jedispoolconfig config = new jedispoolconfig();
 config.setmaxactive(20);
 config.setmaxidle(5);
 config.setmaxwait(100001);
 config.settestonborrow(false);
 //slave连接
 list<jedisshardinfo> shardinfos = new arraylist<jedisshardinfo>();
 shardinfos.add(new jedisshardinfo("127.0.0.1",6379,"master"));
 //构造池
 shardedjedispool = new shardedjedispool(config, shardinfos);
 }
 
 public void show(){
 system.out.println("----对value操作的命令----");
 valueoperate();
 system.out.println("----对string操作的命令----");
 stringoperator();
 system.out.println("----对list操作的命令----");
 listoperator();
 system.out.println("----对set操作的命令----");
 setoperator();
 system.out.println("----对hash操作的命令----");
 hashoperate();
 }
 
 
 /**
 * 对value操作的命令
 * @throws interruptedexception 
 */
 private void valueoperate(){
 system.out.println("清空当前选择库中所有key："+jedis.flushdb());
 system.out.println("清空所有库中所有key："+jedis.flushall());
 system.out.println("判断mykey键是否存在："+shardedjedis.exists("mykey")); 
 system.out.println("新增mykey："+shardedjedis.set("mykey","myvalue")); 
 system.out.println("判断mykey键是否存在："+shardedjedis.exists("mykey")); 
 system.out.println("查看mykey所储存的值的类型："+jedis.type("mykey"));
 system.out.println("重命名mykey-mykey_1："+jedis.rename("mykey", "mykey_1")); 
 system.out.println("判断mykey键是否存在："+shardedjedis.exists("mykey")); 
 system.out.println("判断mykey_1键是否存在："+shardedjedis.exists("mykey_1")); 
 system.out.println("新增mykey_2："+shardedjedis.set("mykey_2","myvalue_2")); 
 system.out.println("查看索引为0的key："+jedis.select(0));
 system.out.println("当前数据库中key的数目："+jedis.dbsize());
 system.out.println("系统中所有键如下：");
 //返回满足给定pattern的所有key
  set<string> keys = jedis.keys("*"); 
  iterator<string> it=keys.iterator() ;  
  while(it.hasnext()){  
    string key = it.next();  
    system.out.println(key);  
  }
  //删除时，如果不存在忽略此命令
  system.out.println("系统中删除mykey_3: "+jedis.del("mykey_3"));
  system.out.println("系统中删除mykey_2: "+jedis.del("mykey_2"));
  system.out.println("判断mykey_2是否存在："+shardedjedis.exists("mykey_2"));
  system.out.println("设置 mykey_1的过期时间为5秒:"+jedis.expire("mykey_1", 5));
  try {
  thread.sleep(2000);
 } catch (interruptedexception e) {
  // todo auto-generated catch block
  e.printstacktrace();
 } 
  //没有设置过期时间或者不存在的都返回-1
  system.out.println("获得mykey_1的剩余活动时间："+jedis.ttl("mykey_1"));
  system.out.println("取消设置mykey_1的活动时间："+jedis.persist("mykey_1"));
  system.out.println("查看mykey_1的剩余活动时间："+jedis.ttl("mykey_1"));
 }
 
 /**
 * 对string操作的命令
 */
 private void stringoperator(){
 system.out.println("清空当前选择库中所有key："+jedis.flushdb());
 system.out.println("给数据库中名称为key01的string赋予值value："+jedis.set("key01", "value01"));
 system.out.println("给数据库中名称为key02的string赋予值value："+jedis.set("key02", "value02"));
 system.out.println("给数据库中名称为key03的string赋予值value："+jedis.set("key03", "value03"));
 system.out.println("返回数据库中名称为key01的string的value："+jedis.get("key01"));
 system.out.println("返回库中多个string的value："+jedis.mget("key01","key02","key03"));
 system.out.println("添加string，名称为key，值为value："+jedis.setnx("key04","value04"));
 system.out.println("向库中添加string，设定过期时间time："+jedis.setex("key05",5,"value05"));
 system.out.println("批量设置多个string的值："+jedis.mset("key06_1","value06_1","key06_2","value06_2"));
 system.out.println("给数据库中名称为key07的string赋予值value："+jedis.set("key07", "1"));
 system.out.println("名称为key07的string增1操作："+jedis.incr("key07"));
 //err value is not an integer or out of range
 //system.out.println("名称为key01的string增1操作："+jedis.incr("key01"));
 system.out.println("名称为key07的string增加integer："+jedis.incrby("key07", 5));
 system.out.println("名称为key07的string减1操作："+jedis.decr("key07"));
 system.out.println("名称为key07的string减少integer："+jedis.decrby("key07", 3));
 system.out.println("名称为key的string的值附加value："+jedis.append("key01","hello world"));
 system.out.println("返回名称为key的string的value的子串："+jedis.substr("key01",0,5));
 }
 
 /**
 * 对list操作的命令
 */
 private void listoperator(){
 system.out.println("清空当前选择库中所有key："+jedis.flushdb());
 //准备两个list
 shardedjedis.lpush("mylist", "java"); 
  shardedjedis.lpush("mylist", "c"); 
  shardedjedis.lpush("mylist", "c++");
  shardedjedis.lpush("mylist", "java");
 system.out.println("在名称为mylist的list尾添加一个值为value的元素："+jedis.rpush("mylist","phython"));
 system.out.println("在名称为mylist的list头添加一个值为value的 元素："+jedis.rpush("mylist","php"));
 system.out.println("返回名称为mylist的list的长度："+jedis.llen("mylist"));
 system.out.println("返回名称为mylist中start至end之间的元素："+jedis.lrange("mylist",0,3));
 system.out.println("截取名称为mylist的list："+jedis.ltrim("mylist",0,3));
 system.out.println("返回名称为mylist的list中index位置的元素："+jedis.lindex("mylist",0));
 system.out.println("给名称为mylist的list中index位置的元素赋值："+jedis.lset("mylist",0,"hahahahah我改啦"));
 system.out.println("删除count个mylist的key中值为value的元素："+jedis.lrem("mylist",1,"java"));
 system.out.println("返回并删除名称为mylist的list中的首元素："+jedis.lpop("mylist"));
 system.out.println("返回并删除名称为mylist的list中的尾元素："+jedis.rpop("mylist"));
 }
 
 /**
 * 对set操作的命令
 */
 private void setoperator(){
 system.out.println("清空当前选择库中所有key："+jedis.flushdb());
 //准备两个set
 jedis.sadd("myset","hahaha");
 jedis.sadd("myset","hahaha");
 jedis.sadd("myset","lalala");
 jedis.sadd("myset","kakaka");
 jedis.sadd("myset2","hahaha");
 jedis.sadd("myset2","lalala");
 jedis.sadd("myset2","kakaka");
 system.out.println("向名称为myset的set中添加元素member："+jedis.sadd("myset","wawawa"));
 system.out.println("返回名称为myset的set的所有元素："+jedis.smembers("myset"));
 system.out.println("删除名称为myset的set中的元素member："+jedis.srem("myset","wawawa"));
 system.out.println("返回名称为myset的set的所有元素："+jedis.smembers("myset"));
 system.out.println("随机返回并删除名称为myset的set中一个元素："+jedis.spop("myset"));
 system.out.println("移到集合元素："+jedis.smove("myset","myset2","hahaha"));
 system.out.println("返回名称为myset的set的所有元素："+jedis.smembers("myset"));
 system.out.println("返回名称为myset2的set的所有元素："+jedis.smembers("myset2"));
 system.out.println("返回名称为mykey的set的基数："+jedis.scard("myset"));
 system.out.println("member是否是名称为mykey的set的元素："+jedis.sismember("myset","hahaha"));
 system.out.println("求交集："+jedis.sinter("myset","myset2"));
 system.out.println("求交集并将交集保存到dstkey的集合："+jedis.sinterstore("dstkey","myset2","myset"));
 system.out.println("返回名称为dstkey的set的所有元素："+jedis.smembers("dstkey"));
 system.out.println("求并集："+jedis.sunion("myset","myset2"));
 system.out.println("求并集并将并集保存到dstkey的集合："+jedis.sinterstore("dstkey","myset2","myset"));
 system.out.println("返回名称为dstkey的set的所有元素："+jedis.smembers("dstkey"));
 system.out.println("求差集："+jedis.sdiff("myset2","myset"));
 system.out.println("求差集并将差集保存到dstkey的集合："+jedis.sdiffstore("dstkey","myset2","myset"));
 system.out.println("返回名称为dstkey的set的所有元素："+jedis.smembers("dstkey"));
 system.out.println("随机返回名称为dstkey的set的一个元素："+jedis.srandmember("dstkey"));
 }
 
 /**
 * hash
 */
 private void hashoperate(){
 system.out.println(jedis.flushdb());
 system.out.println("向名称为key的hash中添加元素field1："+shardedjedis.hset("key", "field1", "value1")); 
  system.out.println("向名称为key的hash中添加元素field2："+shardedjedis.hset("key", "field2", "value2")); 
  system.out.println("向名称为key的hash中添加元素field3："+shardedjedis.hset("key", "field3", "value3"));
  system.out.println("返回名称为key的hash中field1对应的value："+shardedjedis.hget("key", "field1"));
  system.out.println("返回名称为key的hash中field1对应的value："+shardedjedis.hmget("key", "field1","field2","field3"));
  system.out.println("删除名称为key的hash中键为field1的域："+shardedjedis.hdel("key", "field1"));
  system.out.println("返回名称为key的hash中所有键对应的value："+shardedjedis.hvals("key"));
  system.out.println("返回名称为key的hash中元素个数："+shardedjedis.hlen("key"));
  system.out.println("返回名称为key的hash中所有键："+shardedjedis.hkeys("key"));
  system.out.println("返回名称为key的hash中所有的键（field）及其对应的value："+shardedjedis.hgetall("key"));
  system.out.println("名称为key的hash中是否存在键为field1的域："+shardedjedis.hexists("key","field1"));
 }
}