SpringBoot集成Redis

1、引入 spring-boot-starter-redis

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

 

2、application.yml配置redis信息

spring:
  redis:
        host: 127.0.0.1
        port: 6379
        password: 
        pool:
          max-active: 100
          max-idle: 10
          max-wait: 100000
        timeout: 0

3、集成Redis
基於JedisPool配置，使用RedisTemplate來操作redis的方式。

a、RedisConfig.java

package com.lynch.redis;

import java.lang.reflect.Method;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.cache.interceptor.KeyGenerator;
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.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import redis.clients.jedis.JedisPoolConfig;

@Configuration
@EnableAutoConfiguration
public class RedisConfig  {

    /**
     * 獲取JedisPoolConfig配置
     * 
     * @return
     */
    @Bean
    @ConfigurationProperties(prefix = "spring.redis.pool")
    public JedisPoolConfig getRedisConfig(){
        JedisPoolConfig config = new JedisPoolConfig();
        return config;
    }

    /**
     * 獲取JedisConnectionFactory工廠
     * 
     * @return
     */
    @Bean
    @ConfigurationProperties(prefix = "spring.redis")
    public JedisConnectionFactory getConnectionFactory() {
        JedisConnectionFactory factory = new JedisConnectionFactory();
        factory.setUsePool(true);
        JedisPoolConfig config = getRedisConfig();
        factory.setPoolConfig(config);
        return factory;
    }

    /**
     * 獲取RedisTemplate模板
     * 
     * @return
     */
    @Bean
    public RedisTemplate<?, ?> getRedisTemplate() {
        JedisConnectionFactory factory = getConnectionFactory();
        RedisTemplate<?, ?> template = new StringRedisTemplate(factory);
        return template;
    }
 
}

@Configuration注解 用於定義配置類，可替換xml配置文件，被注解的類內部包含有一個或多個被@Bean注解的方法，這些方法將會被AnnotationConfigApplicationContext或AnnotationConfigWebApplicationContext類進行掃描，並用於構建bean定義，初始化Spring容器。

@EnableAutoConfiguration注解
啟用Spring應用程序上下文的自動配置，嘗試猜測和配置您可能需要的bean。自動配置類通常基於類路徑和定義的bean應用。

@ConfigurationProperties注解
用於讀取配置文件的信息，在這里是讀取配置在yml里的redis的相關配置項。

@Bean注解
用在方法上，告訴Spring容器，你可以從下面這個方法中拿到一個Bean

b、RedisService.java

package com.lynch.redis;

public interface RedisService {

    /**
     * set存數據
     * @param key
     * @param value
     * @return
     */
    boolean set(String key, String value);

    /**
     * get獲取數據
     * @param key
     * @return
     */
    String get(String key);

    /**
     * 設置有效天數
     * @param key
     * @param expire
     * @return
     */
    boolean expire(String key, long expire);

    /**
     * 移除數據
     * @param key
     * @return
     */
    boolean remove(String key);

}

c、RedisServiceImpl.java

package com.lynch.redis;

import java.util.concurrent.TimeUnit;

import javax.annotation.Resource;

import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.stereotype.Service;

@Service
public class RedisServiceImpl implements RedisService {

    @Resource
    private RedisTemplate<String, ?> redisTemplate;

    @Override
    public boolean set(final String key, final String value) {
        boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer = redisTemplate.getStringSerializer();
                connection.set(serializer.serialize(key), serializer.serialize(value));
                return true;
            }
        });
        return result;
    }

    @Override
    public String get(final String key) {
        String result = redisTemplate.execute(new RedisCallback<String>() {
            @Override
            public String doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer = redisTemplate.getStringSerializer();
                byte[] value = connection.get(serializer.serialize(key));
                return serializer.deserialize(value);
            }
        });
        return result;
    }

    @Override
    public boolean expire(final String key, long expire) {
        return redisTemplate.expire(key, expire, TimeUnit.SECONDS);
    }

    @Override
    public boolean remove(final String key) {
        boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                connection.del(key.getBytes());
                return true;
            }
        });
        return result;
    }
}

 

4、Redis測試

package com.lynch.config;

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.test.context.junit4.SpringRunner;

import com.lynch.redis.RedisService;

@RunWith(SpringRunner.class)
@SpringBootTest
public class RedisServiceTest {
    @Autowired
    private RedisService redisService;
    
    @Test
    public void contextLoads() {
    }
    
    @Test
    public void setString() {
        redisService.set("redis_string_test", "springboot redis！中國");
    }
    
    @Test
    public void getString() {
        String result = redisService.get("redis_string_test");
        System.out.println(result);
    }
    
    @Test
    public void remove() {
         System.out.println(redisService.remove("redis_string_test"));
    }
 
}