Question

当尝试使用2.0.3命令启动Spring Boot mvn clean spring-boot:run应用程序时，出现以下错误：

Field applicationProperties in com.thalasoft.user.rest.security.TokenAuthenticationServiceImpl required a single bean, but 2 were found:
    - userProdProperties: defined in file [/home/stephane/dev/java/projects/user-rest/target/classes/com/thalasoft/user/rest/config/properties/UserProdProperties.class]
    - com.thalasoft.user.rest.config.properties.UserProdProperties: defined in file [/home/stephane/dev/java/projects/user-rest/target/classes/com/thalasoft/user/rest/config/properties/UserProdProperties.class]

但是只有一个这样的UserProdProperties类：

@EnvProd
@Configuration
@PropertySource({ "classpath:user-prod.properties" })
public class UserProdProperties extends AbstractUserProperties {

    private static Logger logger = LoggerFactory.getLogger(UserProdProperties.class);

    public UserProdProperties() {
        logger.debug("Loading the Prod properties file");
    }

}

使用注入的bean的服务类没有构造函数：

@Service
public class TokenAuthenticationServiceImpl implements TokenAuthenticationService {
    @Autowired
    private UserProperties applicationProperties;
}

我的应用程序从以下类启动：

@SpringBootApplication
public class Application {

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

}

应用程序配置通过以下类完成：

@Configuration
@EnableAutoConfiguration
@ComponentScan(nameGenerator = PackageBeanNameGenerator.class, basePackages = { "com.thalasoft.user.rest.config",
                "com.thalasoft.user.rest.service", "com.thalasoft.user.rest.bootstrap", "com.thalasoft.user.data" })
public class ApplicationConfiguration {
}

Web配置类使用以下注释：

@EnableAutoConfiguration
@EnableWebMvc
@EnableSpringDataWebSupport
@ComponentScan(nameGenerator = PackageBeanNameGenerator.class, basePackages = { "com.thalasoft.user.rest.exception",
        "com.thalasoft.user.rest.controller", "com.thalasoft.user.rest.assembler" })
public class WebConfiguration implements WebMvcConfigurer {
}

更新：我现在注意到，如果存在带有@SpringBootApplication批注的类，则集成测试将失败。带有@SpringBootApplication批注的内容。如果我有一个用@SpringBootApplication注释注释的类，那么集成测试也将失败。如果我从@SpringBootApplication类中删除了Application批注，则集成测试运行良好。

Answer 1

我可以通过创建专用于测试的配置来解决此问题：

@Configuration
@EnableAutoConfiguration
@ComponentScan(nameGenerator = PackageBeanNameGenerator.class, basePackages = { "com.thalasoft.user.rest.config",
                "com.thalasoft.user.rest.service", "com.thalasoft.user.rest.bootstrap", "com.thalasoft.user.data" })
public class TestConfiguration {
}

具有专用于生产的以下配置：

@EnvProd
@SpringBootApplication
public class Application {

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

}

@Component
@ComponentScan(nameGenerator = PackageBeanNameGenerator.class, basePackages = { "com.thalasoft.user.rest.properties", "com.thalasoft.user.rest.config",
                "com.thalasoft.user.rest.service", "com.thalasoft.user.rest.bootstrap", "com.thalasoft.user.data" })
public class ApplicationConfiguration {
}

请注意自定义@EnvProd注释，该注释可防止测试看到此类。

字段需要单个bean，但是找到了2个

1 个答案: