Question

我正在尝试通过Java连接到Redis，我具有以下配置，

@SpringBootApplication
@Configuration
@ComponentScan(basePackages = "com.infy.redisDemo")
public class RedisDemoApplication {

    @Bean
    public LettuceConnectionFactory getConnectionFactory(){
        LettuceConnectionFactory lettuceConnectionFactory = new LettuceConnectionFactory("localhost",6379);
        return lettuceConnectionFactory;
    }

    @Bean
    public RedisTemplate<String,Object> getRedisTemplate(){
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate();
        redisTemplate.setConnectionFactory(getConnectionFactory());
        return redisTemplate;
    }

    public static void main(String[] args) {
        SpringApplication.run(RedisDemoApplication.class, args);
    }

}

我的回购类：

@Repository
public class UserRepoImpl implements UserRepository {

    private RedisTemplate<String, Object> redisTemplate;
    private HashOperations hashOperations;

    public final String key = "USER";

    public UserRepoImpl(RedisTemplate redisTemplate,
      HashOperations hashOperations) {
        this.redisTemplate = redisTemplate;
        this.hashOperations = redisTemplate.opsForHash();
    }

    @Override
    public void save(User user) {
        hashOperations.put(key,user.getId(),user);
    }

    @Override
    public void update(User user) {
        hashOperations.put(key,user.getId(),user);
    }

    @Override
    public Map findAll() {
        return hashOperations.entries(key);
    }
}

public interface UserRepository {
    void save(User user);
    void update(User user);
    Map findAll();
}

我的控制器类如下，

@RestController
@RequestMapping("/rest/user")
public class RedisController {
    private UserRepository userRepository;

    public RedisController(UserRepository userRepository) {
        this.userRepository = userRepository;
    }

    @GetMapping("/add/{id}/{name}")
    public User add(@PathVariable String id,@PathVariable String name){
        userRepository.save(new User(name,id,25000));
        return userRepository.findById(id);
    }
}

我在运行应用程序时遇到以下错误，

org.springframework.beans.factory.UnsatisfiedDependencyException：创建文件[redisDemo \ RedisController.class]中定义的名称为'redisController'的bean时出错：通过构造函数参数0表示的不满意依赖关系；嵌套的异常是org.springframework.beans.factory.UnsatisfiedDependencyException：创建文件[redisDemo \ repository \ UserRepoImpl.class]中定义的名称为'userRepoImpl'的bean时出错：通过构造函数参数1表示的不满足的依赖关系；嵌套的异常是org.springframework.beans.factory.NoSuchBeanDefinitionException：没有类型为“ org.springframework.data.redis.core.HashOperations”的合格Bean：预计至少有1个有资格作为自动装配候选的Bean。依赖项注释：{}

程序有什么问题？有什么建议可以使其正常工作吗？我需要使用jedisconnectionFactory吗？我正在使用Intellij，并且在Windows上 redis的版本是3.2 ，而 spring的版本是2.1.6 。

Answer 1

您不需要在HashOperations hashOperations构造函数中将UserRepoImpl作为参数传递。相反，您可以从构造函数中删除此参数。

public UserRepoImpl(RedisTemplate redisTemplate) {
    this.redisTemplate = redisTemplate;
    this.hashOperations = redisTemplate.opsForHash();
}

Redis问题请考虑在您的配置中定义类型为“ org.springframework.data.redis.core.HashOperations”的bean

1 个答案: