java - 没有可用类型的合格 bean

Question

线程“main”中的异常 org.springframework.beans.factory.NoSuchBeanDefinitionException:没有可用类型为“com.spring.dto.Car2”的合格 bean

---

Controller.java -

public class Controller {
public static void main(String[] args) {
    ConfigurableApplicationContext  context = new ClassPathXmlApplicationContext("configu.xml");
    Car2 c2 = (Car2) context.getBean(Car2.class);
    System.out.println(c2);
}

---

Car2.java-

@ToString @Component
public class Car2 {
    @Autowired
    private Engine engine;
}

---

引擎.java -

@Setter @ToString
public class Engine {
    private String modelYear;
   }

---

配置.xml -

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    <context:component-scan base-package="com.spring.dto.Car2" />
    <context:annotation-config />
    <bean  class="com.spring.dto.Engine">
    <property name="modelYear" value="2015"></property>
    </bean>

    </beans>

---

请忽略注解@ToString 和@Setter - 为了简单起见，我正在使用 Lombok 项目。

Answer 1

我认为错误在这里:

<context:component-scan base-package="com.spring.dto.Car2" />

该值应该是一个包，而不是一个类。将其更改为“com.spring.dto”，然后它应该可以工作。