我是那個傾向于使用Spring Boot編寫代碼的人。然后，當(dāng)我嘗試編寫使用抽象類的代碼時，我收到如下錯誤。Description:Parameter 0 of constructor in com.in28minutes.spring.practice.springmasterclasspractice.devicefactory. LaptopManufacturingProcess required a bean of type 'java.lang.String' that could not be found.Action:Consider defining a  bean of type 'java.lang.String' in your configuration.你們能告訴我如何解決這個錯誤嗎？Spring Boot：v2.1.4 Java：10.0.2 Maven：3.6.0SpringMasterClassPracticeDeviceFactoryApplication 類import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.boot.SpringApplication;import org.springframework. boot.autoconfigure.SpringBootApplication;import org.springframework.context.ConfigurableApplicationContext;@SpringBootApplicationpublic  class SpringMasterClassPracticeDeviceFactoryApplication {     private static Logger LOGGER = LoggerFactory.getLogger(SpringMasterClassPracticeDeviceFactoryApplication.class);     public static void main(String[] args) {         ConfigurableApplicationContext applicationContext = SpringApplication                 .run(SpringMasterClassPracticeDeviceFactoryApplication.class, args);         ManufacturingImpl manufacturingImpl = applicationContext.getBean(ManufacturingImpl.class);         System.out.println(manufacturingImpl);         // manufacturingImpl.manifactureProduct("Laptop Process");         LOGGER.info("{}", manufacturingImpl);     }}ManufacturingImpl 類import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory. annotation.Qualifier;import org.springframework.stereotype.Component;@Componentpublic class ManufacturingImpl {     @Autowired     @Qualifier("laptop")     private GeneralManufacturingProcess generalManufacturingProcess;     public void manifactureProduct(String processName) {         System.out.println(generalManufacturingProcess);         generalManufacturingProcess.launchProcess();     }}GeneralManufacturingProcess 類public abstract class GeneralManufacturingProcess {     private String processName;