springboot集成redis

一:引入springboot集成redis的依赖

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

<!--这两个包是引入ToStringBuilder，感觉没吊用-->

<dependency>
   <groupId>org.apache.commons</groupId>
   <artifactId>commons-pool2</artifactId>
</dependency>
<dependency>
   <groupId>org.apache.commons</groupId>
   <artifactId>commons-lang3</artifactId>
</dependency>

二:接口代码

package com.neo.service;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.*;
import org.springframework.stereotype.Service;

import java.io.Serializable;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;

@Service
public class RedisService {
    private Logger logger = LoggerFactory.getLogger(RedisService.class);
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * set value
     * @param key
     * @param value
     * @return
     */
    public boolean set(final String key, Object value) {
        boolean result = false;
        try {
            ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            result = true;
        } catch (Exception e) {
            logger.error("set error: key {}, value {}",key,value,e);
        }
        return result;
    }

    /**
     * set value with expireTime
     * @param key
     * @param value
     * @param expireTime
     * @return
     */
    public boolean set(final String key, Object value, Long expireTime) {
        boolean result = false;
        try {
            ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);
            result = true;
        } catch (Exception e) {
            logger.error("set error: key {}, value {},expireTime {}",key,value,expireTime,e);
        }
        return result;
    }

    /**
     * @param key
     * @return
     */
    public boolean exists(final String key) {
        return redisTemplate.hasKey(key);
    }

    /**
     * @param key
     * @return
     */
    public Object get(final String key) {
        Object result = null;
        ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
        result = operations.get(key);
        return result;
    }

    /**
     * remove single key
     * @param key
     */
    public void remove(final String key) {
        if (exists(key)) {
            redisTemplate.delete(key);
        }
    }

    /**
     * batch delete
     * @param keys
     */
    public void remove(final String... keys) {
        for (String key : keys) {
            remove(key);
        }
    }

    /**
     * batch delete with pattern
     * @param pattern
     */
    public void removePattern(final String pattern) {
        Set<Serializable> keys = redisTemplate.keys(pattern);
        if (keys.size() > 0)
            redisTemplate.delete(keys);
    }

    /**
     * hash set
     * @param key
     * @param hashKey
     * @param value
     */
    public void hashSet(String key, Object hashKey, Object value){
        HashOperations<String, Object, Object> hash = redisTemplate.opsForHash();
        hash.put(key,hashKey,value);
    }

    /**
     * hash get
     * @param key
     * @param hashKey
     * @return
     */
    public Object hashGet(String key, Object hashKey){
        HashOperations<String, Object, Object>  hash = redisTemplate.opsForHash();
        return hash.get(key,hashKey);
    }

    /**
     *  list push
     * @param k
     * @param v
     */
    public void push(String k,Object v){
        ListOperations<String, Object> list = redisTemplate.opsForList();
        list.rightPush(k,v);
    }

    /**
     *  list range
     * @param k
     * @param l
     * @param l1
     * @return
     */
    public List<Object> range(String k, long l, long l1){
        ListOperations<String, Object> list = redisTemplate.opsForList();
        return list.range(k,l,l1);
    }

    /**
     *  set add
     * @param key
     * @param value
     */
    public void setAdd(String key,Object value){
        SetOperations<String, Object> set = redisTemplate.opsForSet();
        set.add(key,value);
    }

    /**
     * set get
     * @param key
     * @return
     */
    public Set<Object> setMembers(String key){
        SetOperations<String, Object> set = redisTemplate.opsForSet();
        return set.members(key);
    }

    /**
     * ordered set add
     * @param key
     * @param value
     * @param scoure
     */
    public void zAdd(String key,Object value,double scoure){
        ZSetOperations<String, Object> zset = redisTemplate.opsForZSet();
        zset.add(key,value,scoure);
    }

    /**
     * rangeByScore
     * @param key
     * @param scoure
     * @param scoure1
     * @return
     */
    public Set<Object> rangeByScore(String key,double scoure,double scoure1){
        ZSetOperations<String, Object> zset = redisTemplate.opsForZSet();
        return zset.rangeByScore(key, scoure, scoure1);
    }
}

三:配置redis的key生成策略（一般都是类名方法名参数名），配置缓存管理器。配置redisTemplate.这里就省略后面的

package com.neo.config;

import java.lang.reflect.Method;

import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.core.RedisTemplate;


@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport{
   
   @Bean
   public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... params) {
                StringBuilder sb = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append(method.getName());
                for (Object obj : params) {
                    sb.append(obj.toString());
                }
                return sb.toString();
            }
        };
    }

}

我的测试：

package com.neo.redis;

import com.neo.model.User;
import com.neo.service.RedisService;
import org.apache.commons.lang3.SystemUtils;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.*;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;

/**
 * redis缓存测试: 描述信息
 *
 * @author liyy
 * @date 2018-07-09 10:54
 */
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest
public class RedisTestService {

    @Autowired
    private RedisService redisService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 测试缓存字符串
     */
    @Test
    public void test1(){
        redisService.set("name","liyy");
        Assert.assertEquals("liyy",redisService.get("name"));
    }



    /**
     * 测试缓存对象
     */
    @Test
    public void test2(){
        User u = new User("ityouknow@126.com", "smile", "youknow", "know","2020");
        redisService.set("user",u);
        User user = (User)redisService.get("user");
        System.out.println(user.getNickname());
    }


    /**
     * 覆盖
     */
    @Test
    public void test3(){
        redisTemplate.opsForValue().set("name","i love you");
        redisTemplate.opsForValue().set("name","hello");
        System.out.println(redisTemplate.opsForValue().get("name"));
    }

    /**
     *
     */
    @Test
    public void test4(){
        User u = new User("ityouknow@126.com", "smile", "youknow", "know","2020");
        ValueOperations<String,User> valueOperations = redisTemplate.opsForValue();
        valueOperations.set("user",u);
        User user = valueOperations.get("user");
        System.out.println(user.getNickname());
    }



    /**
     *测试时效性
     */
    @Test
    public void test5(){
        User u = new User("ityouknow@126.com", "smile", "youknow", "know","2020");
        ValueOperations<String,User> valueOperations = redisTemplate.opsForValue();
        valueOperations.set("user1",u,10, TimeUnit.SECONDS);
        User user = valueOperations.get("user1");
        System.out.println(user.getNickname());
    }


    /**
     *判断key是否存在
     */
    @Test
    public void test6(){
        User u = new User("ityouknow@126.com", "smile", "youknow", "know","2020");
        ValueOperations<String,User> valueOperations = redisTemplate.opsForValue();
        valueOperations.set("user1",u,10, TimeUnit.SECONDS);
        Long time1=0L,time2=0L;
        try {
            time1 = System.currentTimeMillis();
            System.out.println("线程沉睡开始....");
            Thread.sleep(10000);//10s
            System.out.println("线程沉睡结束....");
            time2 = System.currentTimeMillis();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("线程沉睡时间:"+(time2-time1)/1000+"秒");
        if(redisTemplate.hasKey("user1")){
            User user = valueOperations.get("user1");
            System.out.println(user.getNickname());
        }else{
            System.out.println("缓存的key已经被超时删除");
        }

    }

    /**
     * 测试缓存hash
     */
    @Test
    public void test7(){
        HashOperations<String,Object,Object> valueOperations = redisTemplate.opsForHash();
        valueOperations.put("hash","you","you");
        String str = (String)valueOperations.get("hash","you");
        System.out.println(str);
    }

    /**
     * 测试缓存集合
     */
    @Test
    public void test8(){
        String key = "list";
        redisTemplate.delete(key);
        ListOperations<String,String> listOperations = redisTemplate.opsForList();
        listOperations.leftPush(key,"i");
        listOperations.leftPush(key,"love");
        listOperations.leftPush(key,"you");
        String str = listOperations.leftPop(key);
        //System.out.println(str);
        List<String> list  = listOperations.range(key,0,3);
        for(String str1 : list){
            System.out.println(str1) ;
        }
    }


    /**
     * 测试缓存集合
     */
    @Test
    public void test9(){
        String key = "list";
        redisTemplate.delete(key);
        ZSetOperations<String, String> zset = redisTemplate.opsForZSet();
        //System.out.println(str);
        zset.add(key,"i",1);
        zset.add(key,"love",3);
        zset.add(key,"you",5);
        zset.add(key,"konw",8);
        Set<String> list  = zset.range(key,0,3);
        for(String str1 : list){
            System.out.println(str1) ;
        }
    }





}