問題描述：

java.lang.IllegalStateException: Failed to execute CommandLineRunner
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:779) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
    at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:760
 
) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
    at org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:747) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-1.5.3.RELEASE.jar:1.5
 
.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
    at org.tyrone.springboot.integrate.redis.Application.main(Application.java:27
 
) [classes/:na]
Caused by: org.springframework.dao.InvalidDataAccessApiUsageException: DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.; nested exception is redis.clients.jedis.exceptions.JedisDataException: DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.
    at org.springframework.data.redis.connection.jedis.JedisExceptionConverter.convert(JedisExceptionConverter.java:64) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.connection.jedis.JedisExceptionConverter.convert(JedisExceptionConverter.java:41) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:37) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:37) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.connection.jedis.JedisConnection.convertJedisAccessException(JedisConnection.java:242) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.connection.jedis.JedisConnection.exists(JedisConnection.java:815) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.connection.DefaultStringRedisConnection.exists(DefaultStringRedisConnection.java:264) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.core.RedisTemplate$6.doInRedis(RedisTemplate.java:661) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.core.RedisTemplate$6.doInRedis(RedisTemplate.java:658) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:207) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:169) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.springframework.data.redis.core.RedisTemplate.hasKey(RedisTemplate.java:658) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    at org.tyrone.springboot.integrate.redis.Application.run(Application.java:20) [classes/:na]
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:776) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
    ... 6 common frames omitted
Caused by: redis.clients.jedis.exceptions.JedisDataException: DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.
    at redis.clients.jedis.Protocol.processError(Protocol.java:127) ~[jedis-2.9.0.jar:na]
    at redis.clients.jedis.Protocol.process(Protocol.java:161) ~[jedis-2.9.0.jar:na]
    at redis.clients.jedis.Protocol.read(Protocol.java:215) ~[jedis-2.9.0.jar:na]
    at redis.clients.jedis.Connection.readProtocolWithCheckingBroken(Connection.java:340) ~[jedis-2.9.0.jar:na]
    at redis.clients.jedis.Connection.getIntegerReply(Connection.java:265) ~[jedis-2.9.0.jar:na]
    at redis.clients.jedis.BinaryJedis.exists(BinaryJedis.java:279) ~[jedis-2.9.0.jar:na]
    at org.springframework.data.redis.connection.jedis.JedisConnection.exists(JedisConnection.java:813) ~[spring-data-redis-1.8.3.RELEASE.jar:na]
    ... 14 common frames omitted

2017-06-12 16:25:38.729  INFO 5540 --- [           main] ationConfigEmbeddedWebApplicationContext : Closing org.springframework.boot[email protected]56928307: startup date [Mon Jun 12 16:25:31 CST 2017]; root of context hierarchy
2017-06-12 16:25:38.731  INFO 5540 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown

解決方案：
這個問題是由於redis沒有配置密碼的原因導致的，只需要為redis設定密碼即可。
設定密碼方法：

127.0.0.1:6379> config get requirepass
1) "requirepass"
2) ""
127.0.0.1:6379> config set requirepass "admin"
OK

config get requirepass: 這是查詢redis是否配置密碼,如果返回為空，則表明未配置密碼。
config set requirepass “admin”這是將redis的密碼設定為“admin”