Redis--Spring集成Redis

Redis,算是java中最常用的非关系型数据库之一了,至于和MongoDB的比较这里不做讨论,由于运行在内存中实在是强大,打开就跑不用过多的麻烦配置.

　　也有面向java的客户端Jedis可以使用.Spring也对其做了整合,大概打开Redis能找到1W+的帖子,但是笔记终归还是自己的好.Jedis不多说应用比较少,基本都是使用Spring集成:

Maven坐标:

<dependency> 
          <groupId>redis.clients</groupId> 
          <artifactId>jedis</artifactId> 
          <version>2.8.1</version> 
</dependency> 
<dependency> 
          <groupId>org.springframework.data</groupId> 
          <artifactId>spring-data-redis</artifactId> 
          <version>1.7.2.RELEASE</version> 
</dependency>

配置文件:

<?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:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <context:property-placeholder location="classpath*:properties/redis-config.properties"/>
    <!-- redis 相关配置 -->
    <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig" >
        <property name="maxIdle" value="${redis.maxIdle}"/>
        <property name="maxWaitMillis" value="${redis.maxWait}"/>
        <property name="testOnBorrow" value="true"/>
    </bean>

    <bean id="JedisConnectionFactory"  class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <property name="hostName" value="${redis.host}"/>
        <property name="port" value="${redis.port}"/>
        <property name="password" value="${redis.pass}"/>
        <property name="poolConfig" ref="poolConfig"/>
    </bean>

    <bean class="org.springframework.data.redis.core.RedisTemplate" id="redisTemplate">
        <property name="connectionFactory" ref="JedisConnectionFactory"/>
    </bean>
</beans>

说明:

maxIdle ：最大空闲数

maxWaitMillis:连接时的最大等待毫秒数

testOnBorrow：在提取一个jedis实例时，是否提前进行验证操作；如果为true，则得到的jedis实例均是可用的；

host:redis地址

port:端口号

连接池自动管理，提供了一个高度封装的“RedisTemplate”类

针对jedis客户端中大量api进行了归类封装,将同一类型操作封装为operation接口

ValueOperations：简单K-V操作

    //存    
    public void setValue(){
        redisTemplate.boundValueOps("name").set("itcast");        
    }    
    //取    
    public void getValue(){
        String str = (String) redisTemplate.boundValueOps("name").get();
        System.out.println(str);
    }    
    //删除
    public void deleteValue(){
        redisTemplate.delete("name");;
    }

SetOperations：set类型数据操作

//存        
public void setValue(){
        redisTemplate.boundSetOps("name").add("111");        
        redisTemplate.boundSetOps("name").add("222");    
        redisTemplate.boundSetOps("name").add("333");
    }
    
//取
    public void getValue(){
        Set members =                 
                redisTemplate.boundSetOps("name").members();
        System.out.println(members);
    }
    
//删单个值

    public void deleteValue(){
        redisTemplate.boundSetOps("nameset").remove("111");
    }
    
//删集合
    public void deleteAllValue(){
        redisTemplate.delete("name");
    }

ZSetOperations：zset类型数据操作

 /**
     * 存
     */
    @Test
    public void setSet(){
        Long add = redisTemplate.boundSetOps("gg").add("go");
        System.out.println(add);
    }
    /**
     * 取
     */
    @Test
    public void getSet(){
//        取所有成员
        Set set = redisTemplate.boundSetOps("gg").members();
        System.out.println(set);
    }

HashOperations：针对map类型的数据操作

Hash方式是开发中最常用的方式

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.List;
import java.util.Set;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:spring/applicationContext-redis.xml")
public class TestHash {
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 存
     */
    @Test
    public void setHash(){
        redisTemplate.boundHashOps("eva").put("初号机","碇真嗣");
        redisTemplate.boundHashOps("eva").put("零号机","绫波丽");
        redisTemplate.boundHashOps("eva").put("二号机","明日香");
    }

/**
 * 取key
 */
    @Test
    public void getKey(){
        Set eva = redisTemplate.boundHashOps("eva").keys();
        System.out.println(eva);
    }
    /**
     * 取值
     */
    @Test
    public void getValue(){
        String s = (String) redisTemplate.boundHashOps("eva").get("初号机");
        System.out.println(s);
    }
    /**
     * 取所有值
     */
    @Test
    public void getAllValue(){
        List<String> list = redisTemplate.boundHashOps("eva").values();
        System.out.println(list);
    }
    /**
     * 删
     */
    @Test
    public void delete(){
        redisTemplate.boundHashOps("eva").delete("二号机");

    }
}

ListOperations：针对list类型的数据操作

右压栈方式是将后添加的元素添加在集合的尾部,而左压栈方式是将新添加的元素插入到集合的首索引位置.

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.List;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:spring/applicationContext-redis.xml")
public class Testlist {
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 压入右栈
     */
    @Test
    public void testSetRightValue(){
        redisTemplate.boundListOps("namelist1").rightPush("仓木麻衣");
        redisTemplate.boundListOps("namelist1").rightPush("新垣结衣");
        redisTemplate.boundListOps("namelist1").rightPush("钉宫理惠");
    }

    /**
     * 显示右栈集合
     */
    @Test
    public void showRight() {
        List range = redisTemplate.boundListOps("namelist1").range(0, 10);
        System.out.println(range);
    }

    /**
     * 左压栈
     */
    @Test
    public void testSetLeftValue(){
        redisTemplate.boundListOps("namelist2").leftPush("花泽香菜");
        redisTemplate.boundListOps("namelist2").leftPush("小仓唯");
        redisTemplate.boundListOps("namelist2").leftPush("民民");
    }

    /**
     * 显示左压栈
     */
    @Test
    public void showLeft() {
        String index1 = (String)redisTemplate.boundListOps("namelist2").index(1);
        System.out.println(index1);
        String index2 = (String)redisTemplate.boundListOps("namelist2").index(2);
        System.out.println(index2);
        String index3 = (String)redisTemplate.boundListOps("namelist2").index(3);
        System.out.println(index3);
    }

    /**
     * 移除元素
     */
    @Test
    public void testRemoveByIndex(){
        redisTemplate.boundListOps("namelist2").remove(2,"花泽香菜");
    }

    /**
     * 显示namelist2集合
     */
    @Test
    public void showLeftList(){
        List namelist2 = redisTemplate.boundListOps("namelist2").range(0, 10);
        System.out.println(namelist2);
    }
}

Redis--Spring集成Redis

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