通过Java反射获得对象里面的所有字段名以及字段对应的值

首先我们有一个对象类

package com.xuzihui.ref;

public class Student {

	public Student() {
		
	}
	
	private int id;
	private String name;
	private int math;
	private int english;
	
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getMath() {
		return math;
	}
	public void setMath(int math) {
		this.math = math;
	}
	public int getEnglish() {
		return english;
	}
	public void setEnglish(int english) {
		this.english = english;
	}
	
	public Student(int id, String name, int math, int english) {
		super();
		this.id = id;
		this.name = name;
		this.math = math;
		this.english = english;
	}
}

通过Java反射获得对象中的字段名和字段对应的值

package com.xuzihui.ref;

import java.lang.reflect.Field;

public class App {
	public static void main(String[] args) throws IllegalArgumentException, IllegalAccessException {
		Student st = new Student(1,"zhuangsan",78,98);
		Field[] fields = st.getClass().getDeclaredFields();
		for(int i = 0 ; i < fields.length ; i++) {
		    //设置是否允许访问，不是修改原来的访问权限修饰词。
			fields[i].setAccessible(true);
			System.out.println(fields[i].getName()+":"+fields[i].get(st));
		}
	}
}

结果显示：