Question

我的邮件服务有构造函数参数，并实现了一个接口

public class MailServiceImpl implements MailService {
    private MailBo mail;

    public MailBO getMail() {
        return Mail;
    }

    public void setMail(MailBO Mail) {
        this.Mail = Mail;
    }

    public MailServiceImpl(MailBo mail) {
        throw exception if from and to address is not here
        this.mail = mail;
    }

    public void sendMail(){
        use mail object to send mail here
    }
}

所以现在我正在尝试编写一个测试，我想用它传递的构造函数参数创建自动装配的Mailserviceimpl实例。

我跟随this链接到构造函数的autowire对象，但我得到了异常

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.model.MailBO] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}

我的考试班

public class MailServiceImplTest {


    @Autowired
    private MailService mailServiceImpl;

    @Test
    public void testSendValidMail(){
    //test
    }
}

编辑： -

添加春天背景

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="com.service" />



</beans>

编辑2： - 我希望我的mailbo加载一些值，并作为构造函数对象注入mailserviceimpl

Answer 1

我认为MailServiceImpl和MailBO是Spring Beans。然后只需通过@Autowired注释MailServiceImpl构造函数，Spring将自动注入构造函数依赖

具有构造函数参数的Spring自动连接依赖项

1 个答案: