反射例子一2022-03-19 01:33:23 package com.resoft.reflection;import java.lang.reflect.Constructor;import java.lang.reflect.Field;import java.lang.reflect.Method;import org.apache.log4j.Logger;/** *//** * 显示一个类的方法、字段、构造函数 * @author zxs_9999 * */public class ShowClassDetail ...{ private static final Logger logger =Logger.getLogger(ShowClassDetail.class); public ShowClassDetail() ...{ // TODO Auto-generated constructor stub } public Object[] getDeclaredMethods(String className)...{ Class reflectionClass=null; try ...{ reflectionClass=Class.forName(className); } catch (ClassNotFoundException e) ...{ // TODO Auto-generated catch block e.printStackTrace(); } return (Object[])reflectionClass.getDeclaredMethods(); } public void showDeclaredMethods(String className)...{ int length=getDeclaredMethods(className).length; Method methods[] =(Method[]) getDeclaredMethods(className); for(int i=0;i<length;i++)...{ System.out.println("className:"+className+" "+methods[i].toString()); } } public Object[] getDeclaredMethods(Object object)...{ Class reflectionClass=object.getClass(); return reflectionClass.getDeclaredMethods(); } public void showDeclaredMethods(Object object)...{ int length=getDeclaredMethods(object).length; Method methods[] =(Method[]) getDeclaredMethods(object); for(int i=0;i<length;i++)...{ System.out.println("className:"+object.toString()+" "+methods[i].toString()); } } public Object[] getConstructors(String className)...{ Class reflectionClass=null; try ...{ reflectionClass=Class.forName(className); } catch (ClassNotFoundException e) ...{ // TODO Auto-generated catch block e.printStackTrace(); } return (Object[])reflectionClass.getConstructors(); } public void showConstructors(String className)...{ int length=getConstructors(className).length; Constructor constructor[] =(Constructor[]) getConstructors(className); for(int i=0;i<length;i++)...{ System.out.println("className:"+className+" "+constructor[i].toString()); } } public Object[] getConstructors(Object object)...{ Class reflectionClass=object.getClass(); return reflectionClass.getConstructors(); } public void showConstructors(Object object)...{ int length=getConstructors(object).length; Constructor constructor[] =(Constructor[]) getConstructors(object); for(int i=0;i<length;i++)...{ System.out.println("className:"+object.toString()+" "+constructor[i].toString()); } } public Object[] getDeclaredConstructor(String className)throws Exception...{ Class reflectionClass=null; try ...{ reflectionClass=Class.forName(className); } catch (ClassNotFoundException e) ...{ // TODO Auto-generated catch block e.printStackTrace(); } return (Object[]) (reflectionClass.getDeclaredConstructor(new Class[]...{}).newInstance(new Object[]...{})); } public void showDeclaredConstructor(String className) throws Exception...{ int length=getDeclaredConstructor(className).length; Constructor constructor[] =(Constructor[]) getDeclaredConstructor(className); for(int i=0;i<length;i++)...{ System.out.println("className:"+className+" "+constructor[i].toString()); } } public Object[] getFields(String className)...{ Class reflectionClass=null; try ...{ reflectionClass=Class.forName(className); } catch (ClassNotFoundException e) ...{ // TODO Auto-generated catch block e.printStackTrace(); } return (Object[])reflectionClass.getFields(); } public void showFields(String className)...{ int length=getFields(className).length; Field field[] =(Field[]) getFields(className); for(int i=0;i<length;i++)...{ System.out.println("className:"+className+" "+field[i].toString()); } } public Object[] getFields(Object object)...{ Class reflectionClass=object.getClass(); return reflectionClass.getFields(); } public void showFields(Object object)...{ int length=getFields(object).length; Field field[] =(Field[]) getFields(object); for(int i=0;i<length;i++)...{ System.out.println("className:"+object.toString()+" "+field[i].toString()); } } public Object[] getDeclaredFields(String className)...{ Class reflectionClass=null; try ...{ reflectionClass=Class.forName(className); } catch (ClassNotFoundException e) ...{ // TODO Auto-generated catch block e.printStackTrace(); } return (Object[])reflectionClass.getDeclaredFields(); } public void showgetDeclaredFields(String className)...{ int length=getDeclaredFields(className).length; Field field[] =(Field[]) getDeclaredFields(className); for(int i=0;i<length;i++)...{ System.out.println("className:"+className+" "+field[i].toString()); } } public Object[] getDeclaredFields(Object object)...{ Class reflectionClass=object.getClass(); return reflectionClass.getDeclaredFields(); } public void showgetDeclaredFields(Object object)...{ int length=getDeclaredFields(object).length; Field field[] =(Field[]) getDeclaredFields(object); for(int i=0;i<length;i++)...{ System.out.println("className:"+object.toString()+" "+field[i].toString()); } } /** *//** * @param args */ public static void main(String[] args) ...{ // TODO Auto-generated method stub new ShowClassDetail().showDeclaredMethods(java.lang.Long.class); new ShowClassDetail().showDeclaredMethods("java.lang.Long"); }} 上一篇：Rtthread object管理下一篇：[005] [RT-Thread学习笔记] 信号量详解及应用