反射+泛型抽取公用utils

import java.lang.reflect.Field;

public class Hac<T> {
    public static void main(String[] args) throws Exception{
            Student student = new Student();
            new Hac<Student>().writeRecord(student);

    }
    public synchronized void writeRecord(T t) throws Exception {
        Class classzz = t.getClass();
        Field[] fieldArray = classzz.getDeclaredFields();
        for (Field f : fieldArray) {
            //获取每个属性名，对应表中的每个字段
            f.setAccessible(true);
            try {
                String fieldName = f.getName();
                String value = String.valueOf(f.get(t));
                System.out.println(fieldName+":"+value);
            } catch (Exception e) {

            }
        }
    }
}

class Student{
    private String name ="zhang";
    private int age=20;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}