springboot+JPA 整合redis

1.导入redis依赖：

<dependency>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-data-redis</artifactId>

　　<version>2.0.3.RELEASE</version>

</dependency>

2.配置redis参数：

#redis配置

spring.redis.host=localhost

spring.redis.port=6379

spring.redis.database=1

spring.redis.jedis.pool.max-active=8

spring.redis.jedis.pool.max-wait= -1ms

spring.redis.jedis.pool.max-idle=500

3.编写redis工具类：

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.data.redis.core.RedisTemplate;

import org.springframework.data.redis.core.StringRedisTemplate;

import org.springframework.data.redis.core.ValueOperations;

import org.springframework.stereotype.Repository;

import springbootd.demo.entity.User;

import java.util.HashMap;

import java.util.Map;

import java.util.concurrent.TimeUnit;

@Repository

public class RedisUtil {

    @Autowired

    private StringRedisTemplate template;

    @Autowired

    private RedisTemplate<String,Object> redisTemplate;

    public void testSetKey(String key,Object value){

        ValueOperations<String,Object> ops =redisTemplate.opsForValue();

        ops.multiSet(value);

    }

    public User testGetValue(String key){

        ValueOperations<String,Object> ops =redisTemplate.opsForValue();

        return (User) ops.get(key);

    }

    public void setKey(String key ,String value){

        ValueOperations<String,String> ops = template.opsForValue();

        ops.set(key,value,1, TimeUnit.MINUTES);

    }

    public String getValue(String key){

        ValueOperations<String,String> ops = this.template.opsForValue();

        return ops.get(key);

    }

}

5.测试：

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 springbootd.demo.entity.User;

import springbootd.demo.util.RedisUtil;

@RunWith(SpringRunner.class)

@SpringBootTest

public class DemoApplicationTests {

   @Test

   public void contextLoads() {

   }

   @Autowired

   RedisUtil redisUtil;

   @Test

   public void testRedis(){

      redisUtil.setKey("userName","chen");

      redisUtil.setKey("age","18");

      User user = new User();

      user.setId((long) 2);

      user.setUserName("xiaomi");

      user.setPassWord("123");

      redisUtil.testSetKey("user_2",user);

      System.out.println(redisUtil.testGetValue("user_2").toString());

      System.out.println("用户名"+redisUtil.getValue("userName"));

      System.out.println("年龄"+redisUtil.getValue("age"));

   }

}

redis如果要缓存实体类的话，此实体类必须序列化：

public class User implements Serializable{

}

或者使用gson工具进行实体类和json字符串之间转换：

1.gson依赖

<dependency>

   <groupId>com.google.code.gson</groupId>

   <artifactId>gson</artifactId>

   <version>2.8.4</version>

</dependency>

转换方法：

@Test

    public void testRedis(){

        Gson gson =new Gson();

        User user = new User();

        user.setId((long) 3);

        user.setUserName("xiaomi");

        user.setPassWord("123");

        redisUtil.testSetKey("user_3",gson.toJson(user));

        String userStr =redisUtil.testGetValue("user_3");

        System.out.println(gson.fromJson(userStr,User.class).toString());

    }

Redis官方没有提供Window版本，不过微软维护了一个版本，下载地址为：https://github.com/MSOpenTech/redis/releases,下载.msi版本进行安装。

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springboot+JPA 整合redis

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