我正在用自定義註釋檢查spring依賴關係我已經在java中創建了一個自定義註釋,並將其應用於FIELD
。其對METHOD
工作,但不是在FEILD
關於類的java註釋FIELD不起作用
我的自定義註釋類是
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Mandatory {
}
我的目標類是:
public class Student {
@Mandatory
int salary;
public Student() {
super();
// TODO Auto-generated constructor stub
}
public int getSalary() {
return salary;
}
public void setSalary(int salary) {
this.salary = salary;
}
}
和我的彈簧配置文件是
<?xml version="1.0" encoding="UTF-8"?>
<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-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd">
<context:annotation-config />
<bean class="org.springframework.beans.factory.annotation.RequiredAnnotationBeanPostProcessor">
<property name="requiredAnnotationType" value="com.spring.core.annotation.Mandatory"/>
</bean>
<bean id="student" class="com.spring.core.annotation.Student">
<!-- <property name="salary" value="200000"></property> -->
</bean>
</beans>
我的應用程序類是
public class App {
public static void main(String[] args) {
ApplicationContext context= new ClassPathXmlApplicationContext("annotations.xml");
Student stud= (Student)context.getBean("student");
System.out.println(stud);
}
}
輸出爲:Student [salary=0]
預期:它應該拋出salary
需要