redis第二节

一.java操作redis

　　1.引入依赖

<!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>2.9.0</version>
    </dependency>

　　2.进行代码的编写

package com.jedis;

import org.junit.Before;
import org.junit.Test;
import redis.clients.jedis.Jedis;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class redisAPI {
    private Jedis jedis;

    @Before
    public void before(){
        //连接jedis
        jedis=new Jedis("192.168.147.88");
        //设置密码
        jedis.auth("redis");
        jedis.ping();
        System.out.println("成功!!!");
    }
    @Test
    public void open() {
        //设置一个值
        jedis.set("zjn01","value01");
        //切快数据库
        jedis.select(1);
        //设置一个String类型的key- value
        jedis . set("strKey01" ,"strVa1ue01");
        //如何设置key的有效期
        //jedis. expire("strKey01”, 20);
        //获取String数据
        String value = jedis . get("strKey01");
        System.out.println("对应存放的va1ue值为: "+value);
        //修改数据
        jedis.set( "strKey01" , "strValue02");
        //删除数据
        jedis.del("strKey01");
        //设置多个值
        jedis.mset("strKey01","strVa1ue01","strKey02" ,"strValue02","strKey03","strVa1ue03","strKey04","1");
        //+1操作
        jedis . incr("strKey04");
        //-1操作
        jedis.decr("strKey04");
        //拼接
        jedis.append("strKey04","append");
    }

    @Test
    public void operationList(){
        //清空集合值
        jedis.del("listkey01","listkey02");
        //设置List集合值,左侧插入
        jedis. lpush("listkey01","张三","李四","王五");
        //设置List集合值,右侧插入
        jedis. rpush("listkey02","北京","上海", "广州");
        //获取List集合值
        List<String> listkey01 = jedis . lrange("listkey01",0,-1);
        for (String item: listkey01){
            System.out.println(item);
        }
        //更改List集合数据
        jedis.lset("listkey01",0, "赵六");
    }

    @Test
    public void operationSet(){
        //设置Set集合
        jedis . sadd("setkey01" ,"张三" ,"李四","王五");
        //获取
        Set<String> setkey01 = jedis . smembers("setkey01");
        for(String item:setkey01 ){
            System. out. println(item);
            }
        }
    @Test
    public void operationSortedSet() {
        //设置SortedSet集合
        jedis.zadd("setKey02", 1, "北京");
        jedis.zadd("setKey02", 2, "上海");
        //获取SortedSet
        Set<String> setKey02 = jedis.zrange("setKey02", 0, -1);
        for (String item : setKey02) {
            System.out.println(item);
        }
    }
    @Test
    public void operatioMap(){
        //设置Map
        Map<String,String> map=new
                HashMap<>();
        map.put("name" ,"张三");
        map.put("age' ",
                "18");
        jedis.hmset("mapkeye1" ,map);
        //获取值
        List<String> value = jedis.hmget("mapkeye1","name","age");
        for(String item:value){
            System.out.println(item);
        }
        Map<String, String> mopRels=jedis.hgetAll("mapkey01");
    }



}

　　3.查看效果

 二.SpringBoot集成Redis

　　1.引入依赖

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.3.RELEASE</version>
</parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

　　2.增加配置文件

########################################################
###Redis (RedisConfiguration)
########################################################
spring.redis.database=0
spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.password=123456
spring.redis.pool.max-idle=8
spring.redis.pool.min-idle=0
spring.redis.pool.max-active=8
spring.redis.pool.max-wait=-1
spring.redis.timeout=5000

　　3.java代码

@Service
public class RedisService {
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    public void setObject(String key, Object value) {
        this.setObject(key, value, null);
    }

    public void setObject(String key, Object value, Long time) {
        if (StringUtils.isEmpty(key) || value == null) {
            return;
        }
        if (value instanceof String) {
            // 存放string类型
            String stringValue = (String) value;
            if (time == null) {
                stringRedisTemplate.opsForValue().set(key, stringValue);
            } else {
                stringRedisTemplate.opsForValue().set(key, stringValue, time, TimeUnit.SECONDS);
            }

            return;
        }
        if (value instanceof List) {
            // 存放list類型
            List<String> listValue = (List<String>) value;
            for (String string : listValue) {
                stringRedisTemplate.opsForList().leftPush(key, string);
            }

        }

    }

    public void delKey(String key) {
        stringRedisTemplate.delete(key);
    }

    public String getString(String key) {
        return stringRedisTemplate.opsForValue().get(key);
    }

}