SpringBoot搭建ssm项目三Redis缓存

一、配置服务机环境

1、centos安装redis

进入centos终端：

(1)下载redis的压缩文件到指定的目录：wget http://download.redis.io/releases/redis-4.0.2.tar.gz

(2)加压压缩文件：tar xzf redis-4.0.2.tar.gz

(3) 进入压缩后的文件 cd redis-4.0.2

(4)执行安装命令 make make install

(5)启动redis,检测是否安装成功：redis-server

调用redis客户端测试redis存取键值对

进入redis客户端可以看到redis的host和port

(6)设置redis密码

进入root的redis目录： cd redis-4.0.2

vi命令打开redis.conf，找到下图的#requirepass foobared去掉#，改为requirepass 123456

修改redis的host(注释掉本机host:127.0.0.1,修改为虚拟机的ip)，关闭掉redis的保护模式，不然远程连接会失败

二、后台代码配置redis

1、pom.xml文件加入reids依赖

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

application配置redis参数


spring.redis.database=0  
spring.redis.host=192.168.137.133
spring.redis.port=6379  
spring.redis.password=123456
spring.redis.jedis.pool.max-idle=8  
spring.redis.jedis.pool.min-idle=0

2、创建redis的工具

package cn.fcw.bb.webapply.redis;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
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.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;



@Configuration
@EnableCaching
public class RedisConfigurer extends CachingConfigurerSupport {

    @Bean
    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
        StringRedisTemplate template = new StringRedisTemplate(factory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        template.setValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }


    @Bean
    public KeyGenerator keyGenerator() {
        return (target, method, 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();
        };
    }
    

    @SuppressWarnings("rawtypes")
    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
//        RedisCacheConfiguration redisCacheConfiguration=RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofHours(1));
//        return RedisCacheManager.builder(RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory))
//                 .cacheDefaults(redisCacheConfiguration).build();
        return RedisCacheManager.create(factory);

    }

}

package cn.fcw.bb.webapply.redis;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.core.*;
import org.springframework.stereotype.Component;

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


@Component
public class RedisUtils {

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 写入缓存
     * @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) {
            e.printStackTrace();
        }
        return result;
    }
    /**
     * 写入缓存设置时效时间
     * @param key
     * @param value
     * @return
     */
    public boolean set(final String key, Object value, Long expireTime , TimeUnit timeUnit) {
        boolean result = false;
        try {
            ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            redisTemplate.expire(key, expireTime, timeUnit);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }
    /**
     * 批量删除对应的value
     * @param keys
     */
    public void remove(final String... keys) {
        for (String key : keys) {
            remove(key);
        }
    }

    /**
     * 批量删除key
     * @param pattern
     */
    public void removePattern(final String pattern) {
        Set<Serializable> keys = redisTemplate.keys(pattern);
        if (keys.size() > 0){
            redisTemplate.delete(keys);
        }
    }
    /**
     * 删除对应的value
     * @param key
     */
    public void remove(final String key) {
        if (exists(key)) {
            redisTemplate.delete(key);
        }
    }
    /**
     * 判断缓存中是否有对应的value
     * @param key
     * @return
     */
    public boolean exists(final String key) {
        return redisTemplate.hasKey(key);
    }
    /**
     * 读取缓存
     * @param key
     * @return
     */
    public Object get(final String key) {
        Object result = null;
        ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
        result = operations.get(key);
        return result;
    }

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

    /**
     * 哈希获取数据
     * @param key
     * @param hashKey
     * @return
     */
    public Object hmGet(String key, Object hashKey){
        HashOperations<String, Object, Object>  hash = redisTemplate.opsForHash();
        return hash.get(key,hashKey);
    }

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

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

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

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

    /**
     * 有序集合添加
     * @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);
    }

    /**
     * 有序集合获取
     * @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);
    }
}

3、redis业务应用将用户信息存储到redis的数据库

@RunWith(SpringRunner.class)
@SpringBootTest
public class RedisTest {
  
    @Autowired
    private IUserMapper userMapper;

    @Autowired
    private RedisUtils redisUtils;
    
    @Test
    public  void  addObject(){  //把userBean对象存入redis
        UserBean  userBean= userMapper.findUserById(2);
        System.out.println("user="+userBean.toString());
        redisUtils.set("user",userBean);
    }
    

    @Test
    public  void   redisListTest(){  //向redis中存入一个key为list的集合
        redisUtils.add("list","Spring");
        redisUtils.add("list","EBJ");
        redisUtils.add("list","Hibernate");
        redisUtils.add("list","Struts2");
    }

}

三、使用Redis Desktop Manager可视化工具查看redis数据库

三、windown

SpringBoot搭建ssm项目三Redis缓存

猜你喜欢