java反射 javaBean根据属性名找属性值

假设一个javaBean类，有两个属性，userName和password，现在如果想通过属性名来找其对应的属性值的话，我们就要用到java反射了，我这里的方法是根据attribute name组装method方法，然后利用method的invoke方法，就可以获取到attribute value了！下面直接上代码

dto类：

public class Dto {
	private String userName;
	private String password;
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	
	
}

?处理方法:

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;


public class t {
	public static void main(String[] args){
		Dto d = new Dto();
		d.setUserName("LRR");
		d.setPassword("123");
		// 已知attribute name 组装 getter语句
		String getter = "get" + "UserName";// getUserName
		try {
			// 通过method的反射方法获取其属性值
			Method method = d.getClass().getMethod(getter, new Class[]{});
			Object value = method.invoke(d, new Object[]{});
			System.out.print(value);
		} catch (IllegalArgumentException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
		} catch (IllegalAccessException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
		} catch (InvocationTargetException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
		} catch (SecurityException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
}

?结果：LRR