spring 開機編譯找不到符號組件可以

Question

我在我的小型 spring 引導項目中遇到無法找到符號組件掃描錯誤。 知道我哪里出錯了。

基地 class：

@ComponentScan("com.example.test.lambda")
@SpringBootApplication
public class Application extends SpringBootServletInitializer {

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

配置 class

@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;
            }
        };
    }

}

依賴樹：

它顯示 spring 上下文類已加載..

+- 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

錯誤：

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

這是一個多余的聲明... SpringBootApplication 還為您提供了一個 componentScan ...

但是這樣做你會失去 Springboot 提供的所有自動配置。

springboot配置注解解釋

更新

我已經克隆了你的 repo 並且它構建得很好，除了你的 class 配置之外沒有任何改變

Maven 搭建成功

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);
    }
}