java反射--PropertyDescriptor类：(属性描述器)、Introspector类

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package com.peidasoft.instrospector;  
 
import java.beans.BeanInfo;  
import java.beans.Introspector;  
import java.beans.PropertyDescriptor;  
import java.lang.reflect.Method;  
 
public class BeanInfoUtil {  
 
    // 设置bean的某个属性值  
    public static void setProperty(UserInfo userInfo, String userName) throws Exception {  
        // 获取bean的某个属性的描述符  
        PropertyDescriptor propDesc = new PropertyDescriptor(userName, UserInfo.class);  
        // 获得用于写入属性值的方法  
        Method methodSetUserName = propDesc.getWriteMethod();  
        // 写入属性值  
        methodSetUserName.invoke(userInfo, "wong");  
        System.out.println("set userName:" + userInfo.getUserName());  
    }  
 
    // 获取bean的某个属性值  
    public static void getProperty(UserInfo userInfo, String userName) throws Exception {  
        // 获取Bean的某个属性的描述符  
        PropertyDescriptor proDescriptor = new PropertyDescriptor(userName, UserInfo.class);  
        // 获得用于读取属性值的方法  
        Method methodGetUserName = proDescriptor.getReadMethod();  
        // 读取属性值  
        Object objUserName = methodGetUserName.invoke(userInfo);  
        System.out.println("get userName:" + objUserName.toString());  
    }  
}

https://blog.csdn.net/qq_36908872/article/details/126974669