java项目部署问题总结

1、

 idea 集成redis 启动报错

2019-07-16 14:55:18.498 ERROR 8880 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :

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APPLICATION FAILED TO START
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Description:

Parameter 0 of method redisTemplate in org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration required a bean of type 'org.springframework.data.redis.connection.RedisConnectionFactory' that could not be found.

The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)

The following candidates were found but could not be injected:
- Bean method 'redisConnectionFactory' in 'JedisConnectionConfiguration' not loaded because @ConditionalOnClass did not find required classes 'org.apache.commons.pool2.impl.GenericObjectPool', 'redis.clients.jedis.Jedis'
- Bean method 'redisConnectionFactory' in 'LettuceConnectionConfiguration' not loaded because @ConditionalOnClass did not find required class 'io.lettuce.core.RedisClient'


Action:

Consider revisiting the entries above or defining a bean of type 'org.springframework.data.redis.connection.RedisConnectionFactory' in your configuration.

原因：

1.redis引入jar版本是否过低

2. @Autowired改成@Resource

@Autowired
private RedisTemplate<String,Object>redisTemplate;
因为RedisTemplate这个bean的key默认是Object类型的，所以在依赖注入的时候，想将key改为String类型的，所以问题就出在了这里。@Autowired这个注解是根据类型来讲bean注入的，RedisTemplate这个bean在Spring容器中是下图这个样子的，RedisTemplate<object,object>，而我上面写的是RedisTemplate<string,object>，根据类型，Spring容器中没有找到，所以就会报错了；而如果用@Resource的话就可以，因为@Resource这个注解是根据名称在Spring容器中寻找bean的，所以没有问题，这个就是@Autowired和@Resource两个注解的区别
3. private RedisTemplate<String,Object>redisTemplate;  去除<String,Object>
 
重新启动