spring-boot编译找不到符号componentscan

Question

我在我的小型spring-boot项目中发现了一个内涵查找符号组件扫描错误。知道我哪里错了吗。

基类：

@ComponentScan("com.example.test.lambda")
@SpringBootApplication
public class Application extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}

配置类

@Configuration
@EnableWebMvc
@Profile("lambda")
public class Config {

@Bean
public HandlerMapping handlerMapping() {
return new RequestMappingHandlerMapping();
}

@Bean
public HandlerAdapter handlerAdapter() {
return new RequestMappingHandlerAdapter();
}

@Bean
public HandlerExceptionResolver handlerExceptionResolver() {
return new HandlerExceptionResolver() {
@Override
public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
return null;
}
};
}
}

依赖树：

它显示spring上下文类已经加载。。

+- org.springframework:spring-context:jar:4.3.13.RELEASE:compile
[INFO] |  +- org.springframework:spring-aop:jar:4.3.13.RELEASE:compile
[INFO] |  +- org.springframework:spring-beans:jar:4.3.13.RELEASE:compile
[INFO] |  - org.springframework:spring-expression:jar:4.3.13.RELEASE:compile
[INFO] +- org.springframework:spring-core:jar:4.3.13.RELEASE:compile

错误：

Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project spring-boot-lambda: Compilation failure
[ERROR] spring-boot-lambda-test-jenkins/lambda-service/spring-boot-lambda/src/main/java/com/example/test/lambda/Application.java:[7,2] cannot find symbol
[ERROR]   symbol: class ComponentScan

Answer 1

这是一个多余的声明。。。SpringBootApplication还为您提供了一个componentScan。。。如果你真的想使用@ComponentScan，请将你的@SpringBootApplication更改为更小的东西，比如@Configuration。。。。

但如果这样做，你就会失去Springboot提供的所有自动配置。

Springboot配置注释解释

更新

我已经克隆了你的repo，它构建得很好，除了你的类配置之外，没有任何其他改变

Maven成功构建

import org.springframework.boot.SpringApplication;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
@Configuration
@ComponentScan
public class Application extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}