package com;

import java.io.Serializable;
import java.util.Arrays;

/**
 * 2017/11/2
 * 说明：
 */
public class Student implements Serializable{
    private String name ;//字段
    private int age;//字段
    private int[] aa;



    public int[] getAa() {
        return aa;
    }

    public void setAa(int[] aa) {
        this.aa = aa;
    }

    public String getName() {//读属性
        return name;
    }

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

    public int getAge() {
        return age;
    }

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

    @Override
    public String toString() {
        return "Student{" +
                "name=‘" + name + ‘\‘‘ +
                ", age=" + age +
                ", aa=" + Arrays.toString(aa) +
                ‘}‘;
    }
}

public void add(Student stu){}

public void add(String name,int age);

package com;

import java.io.Serializable;
import java.util.Arrays;

/**
 * 2017/11/2
 * 说明：
 */
public class Student implements Serializable{
    private String name ;//字段
    private int age;//字段
    private int[] aa;



    public int[] getAa() {
        return aa;
    }

    public void setAa(int[] aa) {
        this.aa = aa;
    }

    public String getName() {//读属性
        return name;
    }

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

    public int getAge() {
        return age;
    }

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

    @Override
    public String toString() {
        return "Student{" +
                "name=‘" + name + ‘\‘‘ +
                ", age=" + age +
                ", aa=" + Arrays.toString(aa) +
                ‘}‘;
    }
}

package com;


import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

/**
 * 2017/11/2
 * 说明：内省技术来封装javaBean技术
 */
public class StudentTest {
    public static void main(String[] args) throws Exception{
        Student student = new Student();
        Map<String,Object> properties = new HashMap<>();
        properties.put("name","张三");
        properties.put("age",20);
        properties.put("aa",new int[]{1,2});

        populate(student,properties);
        System.out.println(student);
    }

    public static void populate(Object Obj,Map<String,Object> properties) throws Exception {
        BeanInfo beanInfo = Introspector.getBeanInfo(Obj.getClass());
        PropertyDescriptor[] pds = beanInfo.getPropertyDescriptors();
        for(PropertyDescriptor pd : pds){
            if(!pd.getName().equals("class")){
                String property = pd.getName();//获取每一个属性值
                Method method = pd.getWriteMethod();
                //遍历properties 的Map集合
                 for(Iterator<Map.Entry<String,Object>> iterator = properties.entrySet().iterator();iterator.hasNext();){
                    Map.Entry<String,Object>  entry = iterator.next();
                    String key = entry.getKey();
                    Object value = entry.getValue();
                    if(key.equals(property)){
                        method.invoke(Obj,value);
                    }
                 }
            }
        }
    }
}