SpringBoot学习之旅（四）快速集成Redis

添加依赖，redis配置以及工具类

        
            org.springframework.boot
            spring-boot-starter-redis
            1.4.1.RELEASE
        
        
            com.alibaba
            fastjson
            1.2.3
        
        
            com.fasterxml.jackson.core
            jackson-databind
        

spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.password=123
spring.redis.pool.max-active=7
spring.redis.pool.min-active=1
spring.redis.pool.max-wait=1000
spring.redis.pool.min-wait=100
spring.redis.pool.max-idle=7
spring.redis.pool.min-idle=1
spring.redis.timeout=3000

package lang.java.springbootdemo.redis;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Value;
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.RedisCacheConfiguration;
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 java.lang.reflect.Method;
import java.time.Duration;

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
    @Value("${spring.redis.host}")
    private String host;
    @Value("${spring.redis.port}")
    private int port;
    @Value("${spring.redis.timeout}")
    private int timeout;
    @Value("${spring.redis.password}")
    private String password;
    @Value("${spring.redis.pool.max-active}")
    private int maxActive;
    @Value("${spring.redis.pool.max-wait}")
    private int maxWait;
    @Value("${spring.redis.pool.max-idle}")
    private int maxIdle;
    @Value("${spring.redis.pool.min-idle}")
    private int minIdle;

    @Bean
    public KeyGenerator wiselyKeyGenerator() {
        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();
            }
        };
    }

    @Bean
    public JedisConnectionFactory redisConnectionFactory() {
        JedisConnectionFactory factory = new JedisConnectionFactory();
        factory.setHostName(host);
        factory.setPort(port);
        factory.setTimeout(timeout);
        factory.setPassword(password);
        factory.getPoolConfig().setMaxIdle(maxIdle);
        factory.getPoolConfig().setMinIdle(minIdle);
        factory.getPoolConfig().setMaxTotal(maxActive);
        factory.getPoolConfig().setMaxWaitMillis(maxWait);
        return factory;
    }

    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory factory) {
        StringRedisTemplate template = new StringRedisTemplate(factory);
        setSerializer(template);
        template.afterPropertiesSet();
        return template;
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofSeconds(60))
                .disableCachingNullValues();
        return RedisCacheManager.builder(factory)
                .cacheDefaults(config)
                .transactionAware()
                .build();
    }

    private void setSerializer(StringRedisTemplate template) {
        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);
    }
}

package lang.java.springbootdemo.redis;

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 RedisUtil {
    @Autowired
    private RedisTemplate redisTemplate;

    public boolean set(final String key, Object value) {
        boolean result = false;
        try {
            ValueOperations operations = redisTemplate.opsForValue();
            operations.set(key, value);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    public boolean set(final String key, Object value, Long expireTime, TimeUnit timeUnit) {
        boolean result = false;
        try {
            ValueOperations operations = redisTemplate.opsForValue();
            operations.set(key, value);
            redisTemplate.expire(key, expireTime, timeUnit);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    public void remove(final String... keys) {
        for (String key : keys) {
            remove(key);
        }
    }

    public void removePattern(final String pattern) {
        Set keys = redisTemplate.keys(pattern);
        if (keys.size() > 0) {
            redisTemplate.delete(keys);
        }
    }

    public void remove(final String key) {
        if (exists(key)) {
            redisTemplate.delete(key);
        }
    }

    public boolean exists(final String key) {
        return redisTemplate.hasKey(key);
    }

    public Object get(final String key) {
        Object result = null;
        ValueOperations operations = redisTemplate.opsForValue();
        result = operations.get(key);
        return result;
    }

    public void hmSet(String key, Object hashKey, Object value) {
        HashOperations hash = redisTemplate.opsForHash();
        hash.put(key, hashKey, value);
    }

    public Object hmGet(String key, Object hashKey) {
        HashOperations hash = redisTemplate.opsForHash();
        return hash.get(key, hashKey);
    }

    public void lPush(String k, Object v) {
        ListOperations list = redisTemplate.opsForList();
        list.rightPush(k, v);
    }

    public List