没有合格的bean类型可用 [英] No qualifying bean of type available

问题描述

线程main中的异常org.springframework.beans.factory.NoSuchBeanDefinitionException：没有'com.spring.dto.Car2'类型的限定bean可用

Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.spring.dto.Car2' available

Controller.java -

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 -

Car2.java -

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

---

Engine.java -

---

Engine.java -

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

---

configu.xml -

---

configu.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>

---

请忽略注释@ToString和@Setter-我使用Lombok项目是为了我的简单。

---

please ignore the annotation @ToString and @Setter- I am using Lombok project for my simplicity.

推荐答案

我认为错误在于：

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

该值应该是包，而不是类。将其更改为com.spring.dto，然后它应该可以工作。

The value should be a package, not a class. Change it to "com.spring.dto", then it should work.

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