Spring Advice Annotation Examples

package beans.annotation;

import org.springframework.stereotype.Component;

@Component
public class Arithmatic {

public int add(int a, int b){
return a+b;
}

public int sub(int a, int b){
return a-b;
}

public int mul(int a, int b){
return a*b;
}

public int div(int a, int b){
return a/b;
}
}

package beans.annotation;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.beans.factory.annotation.Required;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.context.annotation.Configuration;

import org.springframework.stereotype.Component;

@Component("cours")

public class Course {

@Value(value = "100")

private int courseId;

private String courseName;

public int getCourseId() {

return courseId;

}

public void setCourseId(int courseId) {

this.courseId = courseId;

}

public String getCourseName() {

return courseName;

}

   

@Value(value = "JAVA")

@Required

public void setCourseName(String courseName) {

this.courseName = courseName;

}

@Override

public String toString() {

return "Course [courseId=" + courseId + ", courseName=" + courseName + "]";

}

}

package beans.annotation;

import org.aspectj.lang.annotation.AfterReturning;

import org.aspectj.lang.annotation.AfterThrowing;

import org.aspectj.lang.annotation.Aspect;

import org.aspectj.lang.annotation.Before;

import org.springframework.stereotype.Component;

@Component

@Aspect

public class MyAdvice {

@Before("execution(public * *(..))")

//@AfterReturning("execution(public * *(..))")

//@AfterThrowing("execution(public * *(..))")

public void sayHello(){

System.out.println("MyAdvice sayHello method is invoked");

}

}

package beans.annotation;

import javax.inject.Qualifier;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.stereotype.Service;

@Service

public class Student {

private int studentNo;

private String studentName;

   

@Autowired

private Course course;

public Student() {

super();

System.out.println("Default constructor called");

}

@Autowired

public Student(@Value(value = "001") int studentNo, @Value(value = "Bala") String studentName) {

super();

this.studentNo = studentNo;

this.studentName = studentName;

System.out.println("2-arg constructor called");

}

public int getStudentNo() {

return studentNo;

}

//@Value(value = "002")

public void setStudentNo(int studentNo) {

this.studentNo = studentNo;

}

public String getStudentName() {

return studentName;

}

//@Value(value="Balaji")

public void setStudentName(String studentName) {

this.studentName = studentName;

}

public Course getCourse() {

return course;

}

public void setCourse(Course course) {

this.course = course;

}

@Override

public String toString() {

return "Student [studentNo=" + studentNo + ", studentName=" + studentName + ", course=" + course + "]";

}

}