SpringBoot配置Bean是否生效

@Configuration
@ConditionalOnProperty(prefix = "xxl.job", name = "enable", havingValue = "true", matchIfMissing = true)
public class XxlJobConfig {
    // ...
}

上述可直接读取配置文件中的，xxl.job.enable = true

@ConditionalOnProperty(prefix = "redis", name = "cluster", havingValue = "true")

ConditionalOnProperty注解中的 cluster 和 havingValue 指定的值一致时生效。

其中name="cluster"中的 cluster为当前对象中的属性

当然也可以不使用 @ConditionalOnProperty 中的name。

redis.cluster=false

private static boolean cluster;

	@Value("${redis.cluster}")
	public void setCluster(boolean c) {
		cluster = c;
	}

	@Bean
	@ConditionalOnProperty(prefix = "redis", name = "cluster", havingValue = "false")
	public RedisTemplate<?, ?> redisTemplateSingle() {
		JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory();
		jedisConnectionFactory.setHostName(host);
		jedisConnectionFactory.setPort(port);
		jedisConnectionFactory.setDatabase(dbIndex);
		if (StringUtils.isNotBlank(password)) {
			jedisConnectionFactory.setPassword(password);
		}
		jedisConnectionFactory.setTimeout(TIMEOUT);
		jedisConnectionFactory.setUsePool(USE_POOL);
		jedisConnectionFactory.setPoolConfig(jedisPoolConfig());
		jedisConnectionFactory.afterPropertiesSet();

		RedisTemplate<?, ?> redisTemplate = new RedisTemplate<>();
		redisTemplate.setConnectionFactory(jedisConnectionFactory);
		redisTemplate.setKeySerializer(new StringRedisSerializer());
		redisTemplate.setValueSerializer(new StringRedisSerializer());
		redisTemplate.setHashKeySerializer(new StringRedisSerializer());
		redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
		return redisTemplate;
	}

	@Bean
	@ConditionalOnProperty(prefix = "redis", name = "cluster", havingValue = "true")
	public RedisTemplate<?, ?> redisTemplateCluster() {
		RedisNode clusterRedisNodes1 = new RedisNode(host, port);
		RedisClusterConfiguration redisClusterConfiguration = new RedisClusterConfiguration();
		Set<RedisNode> clusterNodes = new HashSet<>();
		clusterNodes.add(clusterRedisNodes1);
		redisClusterConfiguration.setClusterNodes(clusterNodes);

		JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory(redisClusterConfiguration,
				jedisPoolConfig());
		jedisConnectionFactory.setDatabase(dbIndex);
		if (StringUtils.isNotBlank(password)) {
			jedisConnectionFactory.setPassword(password);
		}
		jedisConnectionFactory.afterPropertiesSet();

		RedisTemplate<?, ?> redisTemplate = new RedisTemplate<>();
		redisTemplate.setConnectionFactory(jedisConnectionFactory);
		redisTemplate.setKeySerializer(new StringRedisSerializer());
		redisTemplate.setValueSerializer(new StringRedisSerializer());
		redisTemplate.setHashKeySerializer(new StringRedisSerializer());
		redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
		return redisTemplate;
	}