cannot be cast to redis.clients.jedis.JedisCommands

異常代碼

        try {
            String result = redisTemplate.execute((RedisCallback<String>) redisConnection -> {
                JedisCommands commands = (JedisCommands) redisConnection.getNativeConnection();
            });
        } catch (Exception e) {
            logger.error("set redis occured an exception", e);
        }

因爲 springboot2.0中默認是使用 Lettuce來集成Redis服務，spring-boot-starter-data-redis默認只引入了 Lettuce包，並沒有引入 jedis包支持。所以在我們需要手動引入 jedis的包，並排除掉 lettuce的包，pom.xml配置如下:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
    <exclusions>
        <exclusion>
            <groupId>io.lettuce</groupId>
            <artifactId>lettuce-core</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
</dependency>

關鍵代碼

    <exclusions>
        <exclusion>
            <groupId>io.lettuce</groupId>
            <artifactId>lettuce-core</artifactId>
        </exclusion>
    </exclusions>