spring boot 自学笔记(四) Redis集成—Jedis

上一篇笔记Reddis集成，操作Redis使用的是RedisTemplate，但实际中还是有一大部分人习惯使用JedisPool和Jedis来操作Redis, 下面使用Jedis集成示例。

修改RedisConfig类如下：

package com.vic.config;

import org.apache.log4j.Logger;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

/**
 *
 * @author vic
 * @desc redis config bean
 *
 */
@Configuration
@EnableAutoConfiguration
@ConfigurationProperties(prefix = "spring.redis", locations = "classpath:application.properties")
public class RedisConfig {

    private static Logger logger = Logger.getLogger(RedisConfig.class);

    private String hostName;

    private int port;

    private String password;

    private int timeout;

    @Bean
    public JedisPoolConfig getRedisConfig(){
        JedisPoolConfig config = new JedisPoolConfig();
        return config;
    }

    @Bean
    public JedisPool getJedisPool(){
        JedisPoolConfig config = getRedisConfig();
        JedisPool pool = new JedisPool(config,hostName,port,timeout,password);
        logger.info("init JredisPool ...");
        return pool;
    }

    public String getHostName() {
        return hostName;
    }

    public void setHostName(String hostName) {
        this.hostName = hostName;
    }

    public int getPort() {
        return port;
    }

    public void setPort(int port) {
        this.port = port;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public int getTimeout() {
        return timeout;
    }

    public void setTimeout(int timeout) {
        this.timeout = timeout;
    }
}

因为JedisPool实例化对象，是将host,password等参数通过构造传入，所以在这里将整个RedisConfig定义为一个配置类，定义host,password等配置属性，通过spring boot属性文件自动注入。

接下来看看Service中如何使用：

修改IRedisService接口：

/**
 *
 * @author vic
 * @desc redis service
 */
public interface IRedisService {

    public Jedis getResource();

    public void returnResource(Jedis jedis);

    public void set(String key, String value);

    public String get(String key);

}

RedisService实现类代码：

package com.vic.service.impl;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.vic.service.IRedisService;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;

/**
 *
 * @author vic
 * @desc resdis service
 *
 */
@Service
public class RedisServiceImpl implements IRedisService {

    private static Logger logger = Logger.getLogger(RedisServiceImpl.class);

    @Autowired
    private JedisPool jedisPool;

    @Override
    public Jedis getResource() {
        return jedisPool.getResource();
    }

    @SuppressWarnings("deprecation")
    @Override
    public void returnResource(Jedis jedis) {
        if(jedis != null){
            jedisPool.returnResourceObject(jedis);
        }
    }

    @Override
    public void set(String key, String value) {
        Jedis jedis=null;
        try{
            jedis = getResource();
            jedis.set(key, value);
            logger.info("Redis set success - " + key + ", value:" + value);
        } catch (Exception e) {
            e.printStackTrace();
            logger.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + value);
        }finally{
            returnResource(jedis);
        }
    }

    @Override
    public String get(String key) {
        String result = null;
        Jedis jedis=null;
        try{
            jedis = getResource();
            result = jedis.get(key);
            logger.info("Redis get success - " + key + ", value:" + result);
        } catch (Exception e) {
            e.printStackTrace();
            logger.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + result);
        }finally{
            returnResource(jedis);
        }
        return result;
    }

}

JedisPool对象使用自动注入，手动获取Jedis对象进行Redis操作，ExampleController进行测试：

@RequestMapping("/redis/set")
public ResponseModal redisSet(@RequestParam("value")String value){
    redisService.set("name", value);
    return new ResponseModal(200, true, "success", null);
}

@RequestMapping("/redis/get")
public ResponseModal redisGet(){
    String name = redisService.get("name");
    return new ResponseModal(200, true,"success",name);
}

测试URL：http://localhost:8080/redis/set?value=vic  响应结果:

{"code":200,"success":true,"message":"success","response":null}

测试URL：http://localhost:8080/redis/get   响应结果:

{"code":200,"success":true,"message":"success","response":"vic"}

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