SpringBoot - @Import注解

@Import

作用：用来导入配置类或者一些需要前置加载的类，注入到IOC容器当中

范围：类上，一般使用在被@Configuration修饰的类上

参数：value 数据类型为class[]

 

注入普通类

@Configuration
@Import({Object.class,Student.class})
public class MyConfiguration {
}

 

注入带有@Configuration的配置类，一般在自定义start中会用到

@Configuration
@Import({ConfigurationImport1.class,ConfigurationImport2.class})
public class MyConfiguration {
}

@Configuration
public class ConfigurationImport1{

}

@Configuration
public class ConfigurationImport2{

}

---

通过ImportSelector 方式导入类

@Configuration
@Import({MyImportSelector.class})
public class MyConfiguration {
}

class MyImportSelector implements ImportSelector {
    @Override
    public String[] selectImports(AnnotationMetadata importingClassMetadata) {
        String[] classArray=new String[]{
                "com.example.bean.Student",
                "com.example.bean.Teacher"
        };
        return classArray;
    }
}