springboot整合redis

springboot整合redis

1.导入依赖

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

2.添加redis.properties配置文件（resources/config/redis.properties）

redis.host = localhost
redis.port = 6379
redis.password =
redis.database = 10
redis.pool.max-active = 8
redis.pool.max-wait = -1
redis.pool.max-idle = 500
redis.pool.min-idle = 0
redis.timeout = 0

3.添加配置文件

package com.xpf.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
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.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import redis.clients.jedis.JedisPoolConfig;

import java.lang.reflect.Method;

/**
 * Created by zhuzhengping on 2017/2/19.
 * redis配置
 */
@Configuration
@EnableCaching  //这个使用springCache----->如果只用redis,可以不用添加
@PropertySource("classpath:config/redis.properties")
public class RedisConfig2 extends CachingConfigurerSupport {

    @Bean
    @Override
    public KeyGenerator keyGenerator(){
        return new KeyGenerator() {
            @Override
            public Object generate(Object o, Method method, Object... objects) {
                StringBuilder sb = new StringBuilder();
                sb.append(o.getClass().getName());
                sb.append(method.getName());
                for (Object obj:objects){
                    sb.append(obj.toString());
                }
                System.out.println("keyGenerator=" + sb.toString());
                return sb.toString();
            }
        };
    }


    @Bean
    public CacheManager cacheManager(RedisTemplate redisTemplate){
        RedisCacheManager redisCacheManager = new RedisCacheManager(redisTemplate);
        return redisCacheManager;
    }

    @Autowired
    private Environment env;

    @Bean
    public RedisConnectionFactory redisConnectionFactory(){
        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
        JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory();
        jedisConnectionFactory.setHostName(env.getProperty("redis.host").trim());
        jedisConnectionFactory.setPort(Integer.parseInt(env.getProperty("redis.port").trim()));
        jedisConnectionFactory.setPassword(env.getProperty("redis.password").trim());
        jedisConnectionFactory.setDatabase(Integer.parseInt(env.getProperty("redis.database").trim()));
        jedisConnectionFactory.setUsePool(true);
        jedisConnectionFactory.setPoolConfig(jedisPoolConfig);
        return jedisConnectionFactory;
    }
/*
    @Bean
    public RedisTemplate<String,String> redisTemplate(){
        //StringRedisTemplate的构造方法中默认设置了stringSerializer
        RedisTemplate<String,String> redisTemplate = new StringRedisTemplate();
        redisTemplate.setConnectionFactory(redisConnectionFactory());

        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);
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }*/

    /**
     * 配置RedisTemplate
     * 设置添加序列化器
     * key 使用string序列化器
     * value 使用Json序列化器
     * 还有一种简答的设置方式，改变defaultSerializer对象的实现。
     * @return
     */
    @Bean
    public RedisTemplate<String, Object> redisTemplate() {
        //StringRedisTemplate的构造方法中默认设置了stringSerializer
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        //set key serializer
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        template.setKeySerializer(stringRedisSerializer);
        template.setHashKeySerializer(stringRedisSerializer);

        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);

        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
        //set value serializer
        template.setDefaultSerializer(jackson2JsonRedisSerializer);

        template.setConnectionFactory(redisConnectionFactory());
        template.afterPropertiesSet();
        return template;
    }
}

4.编写一个对应的实体服务类（UserInfoServices.class）

@Service
public class UserInfoServices {

    /**
     * 注入mybati注解方式
     */
    @Autowired
    UserInfoAutoDao userInfoAutoDao;

    /**
     * 注入mybati.xml方式
     */
    @Autowired
    UserInfoMapper userInfoMapper;
    @Resource(name = "redisTemplate")
    protected ValueOperations<String, UserInfo> valueOperations;
   
    /**
     *  注入redis
     * */
    @Autowired
    RedisTemplate redisTemplate;


    public UserInfo getUser(Long id) {
        String key = RedisKeyPrefix.User + id;
        /**
         *判断redis中是否存在该 缓存
         */
        Boolean hasKey = redisTemplate.hasKey(key);

        if (hasKey) {
            System.out.println("----------redis中取的key----------");
            UserInfo userInfo= valueOperations.get(key);//(UserInfo) redisTemplate.opsForValue().get(key);
            return userInfo;
        }
        UserInfo userInfo=userInfoAutoDao.findUser(id);
        redisTemplate.opsForValue().set(key,userInfo,600, TimeUnit.SECONDS);
        return  userInfo;
    }
}

5.测试

@RunWith(SpringRunner.class)
@SpringBootTest
@MapperScan("com.xpf")
public class SpringSwaggerApplicationTests {

    @Test
    public void contextLoads() {
    }

    @Autowired
    UserInfoDao userInfoDao;
    @Autowired
    UserInfoMapper userInfoMapper;
    @Autowired
    UserInfoAutoDao userInfoAutoDao;
    @Autowired
    UserInfoServices services;

    @Test
    public void testService() {
        System.out.println("=======第一次调用======");
        System.out.println(services.getUser(Long.valueOf(1)).toString());
        System.out.println("===========第二次调用=======");
        System.out.println(services.getUser(Long.valueOf(1)).toString());
    }
}

结果