三十、Spring Boot集成redis

            Spring Boot集成redis

1、pom.xml配置

#redis连接
# Redis数据库索引（默认为0）
spring.redis.database=0
# Redis服务器地址
spring.redis.host=localhost
# Redis服务器连接端口
spring.redis.port=6379
# Redis服务器连接密码（默认为空）
spring.redis.password=123456
# 连接池最大连接数（使用负值表示没有限制）
spring.redis.jedis.pool.max-active=8
# 连接池最大阻塞等待时间（使用负值表示没有限制）
spring.redis.jedis.pool.max-wait=-1
# 连接池中的最大空闲连接
spring.redis.jedis.pool.max-idle=8
# 连接池中的最小空闲连接
spring.redis.jedis.pool.min-idle=0
# 连接超时时间（毫秒）
spring.redis.timeout=1000000

2、基于键值对都是String类型

基于键值对都是String类型直接注入：

@Autowired
private  StringRedisTemplate redisTemplate;

就可以使用

测试：

//操作redis，值为String
redisTemplate.opsForValue().set("aa", "11111111");
redisTemplate.opsForValue().set("bb", "22222222");
redisTemplate.opsForValue().set("cc", "33333333");  
System.out.println("============="+redisTemplate.opsForValue().get("cc"));

3、redis保存对象

package com.yang.redisConfig;


import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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.serializer.*;

import com.yang.domain.User;

@Configuration
public class RedisConfig {

    @Bean
    public RedisTemplate<String, User> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, User> template = new RedisTemplate<String, User>();
        template.setConnectionFactory(factory);
        template.setKeySerializer(new StringRedisSerializer());
        template.setValueSerializer(new RedisObjectSerializer());//对value进行重写
        return template;
    }
}

package com.yang.redisConfig;

import org.springframework.core.convert.converter.Converter;
import org.springframework.core.serializer.support.DeserializingConverter;
import org.springframework.core.serializer.support.SerializingConverter;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

public class RedisObjectSerializer implements RedisSerializer<Object> {

    private Converter<Object, byte[]> serializer = new SerializingConverter();
    private Converter<byte[], Object> deserializer = new DeserializingConverter();
    static final byte[] EMPTY_ARRAY = new byte[0];


    public Object deserialize(byte[] bytes) {
        if (isEmpty(bytes)) {
          return null;
        }
        try {
          return deserializer.convert(bytes);
        } catch (Exception ex) {
          throw new SerializationException("Cannot deserialize", ex);
        }
    }


    public byte[] serialize(Object object) {
        if (object == null) {
          return EMPTY_ARRAY;
        }
        try {
          return serializer.convert(object);
        } catch (Exception ex) {
          return EMPTY_ARRAY;
        }
    }


    private boolean isEmpty(byte[] data) {
        return (data == null || data.length == 0);
    }

}

测试：

//测试redis存对象
@Autowired
private RedisTemplate<String, User> redisObjectTemplate;

User user=new User();
user.setName("肉哒哒");
user.setTelphone("123437");
redisObjectTemplate.opsForValue().set(user.getName(), user);
User user1=redisObjectTemplate.opsForValue().get(user.getName());
System.out.println("==========："+user1);