Question

我在通过@Autowired进行接口的spring注入实现时遇到麻烦。

在我的代码中，我有一个用@Component注释的bean。我有一个通过@Autowired注释使用此bean的类。

但是Spring容器没有注入bean

按照代码说明我的情况

Bean

@Component
public class ExternalApiIntegrationImpl implements  ExternalApiIntegration<User>{

    private FactoryHeaders factoryHeaders;
    private RestTemplate  restTemplate;
    final private static String URL_API_EXTERNAL = "https://reqres.in/api/users";

    @Autowired
    public void setFactoryHeaders(FactoryHeaders factoryHeaders) {
        this.factoryHeaders = factoryHeaders;
    }

    @Autowired
    public  void  setRestTemplate(RestTemplateBuilder restTemplateBuilder) {
        this.restTemplate = restTemplateBuilder.build();
    }

    @Override
    public ResponseEntity<User> sendObjectForApi(User object) {
        var headers = factoryHeaders.createHeaderWithoutAuth();
        var request = new HttpEntity<>(object, headers);

        final var response = restTemplate.exchange(URL_API_EXTERNAL, HttpMethod.POST, request, User.class);

        return response;
    }
}

普通消费者Bean

public class CustomWriter implements ItemWriter<User>{

    private final DataSource dataSource;

    @Autowired
    private ExternalApiIntegration externalApiIntegration;  //Set with null

    private static final String QUERY_UPDATE_USERS =
            "UPDATE " +
                    "users " +
            "SET " +
                    "createdAt = ? " +
            "WHERE " +
                    "user_id = ?";

    public CustomWriter(DataSource dataSource) {
        this.dataSource = dataSource;
    }

    @Override
    public void write(List<? extends User> items) throws Exception {

        items.forEach(i -> {
            var response = this.externalApiIntegration.sendObjectForApi(i);
        });

    }
}

运行课程

@ComponentScan("com.br.savit0h.batchservicedemo")
@EnableAutoConfiguration
@SpringBootApplication
public class BatchServiceDemoApplication {

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

}

伙计们，谢谢您的关注。

@Autowired设置值为空的bean

0 个答案: