zoukankan      html  css  js  c++  java
  • java反射出字段信息和值

    /**
     * 
     */
    package test;
    
    import java.lang.reflect.Field;
    import java.lang.reflect.Modifier;
    
    /**
     * @author Administrator
     * 
     */
    public class testmain {
    
    	/**
    	 * @param args
    	 */
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
    		ServiceLaunchPack a = new testmain.ServiceLaunchPack();
    		a.Catagory = "11111111111111";
    		a.getFields(a);
    	}
    
    	public static class ServiceLaunchPack {
    		public String ID;
    		public String Name;
    
    		public String Catagory;
    		public String Catagory2;
    		public String PreFee;
    		public String Method;
    		public String PubMobile;
    		public String MultiDate;
    		public String Cover;
    		public String Images;
    		public String Content;
    		public String Area;
    		public String Street;
    		public String Address;
    		public String Latitude;
    		public String Longitude;
    		public String Enable;
    		public String Audit;
    		public String CreateTime;
    
    		public ServiceLaunchPack() {
    			// TODO Auto-generated constructor stub
    		}
    
    		void getFields(ServiceLaunchPack obj) {
    			try {
    				if (obj == null)
    					return;
    				Field[] fieldlist = obj.getClass().getDeclaredFields();
    				for (int i = 0; i < fieldlist.length; i++) {
    					Field fld = fieldlist[i];					
    					System.out.println("decl class = " + fld.getDeclaringClass());
    					System.out.println("type = " + fld.getType());
    					int mod = fld.getModifiers();
    					System.out.println("modifiers = " + Modifier.toString(mod));
    
    					// int i = i;
    					fieldlist[i].setAccessible(true);
    					// 字段值
    					if (fieldlist[i].getType().getName().equals(java.lang.String.class.getName())) {
    						// String type
    						try {
    							//字段名
    							System.out.print( fld.getName()+" = " );
    							System.out.println(fieldlist[i].get(obj));
    						} catch (IllegalArgumentException e) {
    							// TODO Auto-generated catch block
    							e.printStackTrace();
    						} catch (IllegalAccessException e) {
    							// TODO Auto-generated catch block
    							e.printStackTrace();
    						}
    					} else if (fieldlist[i].getType().getName().equals(java.lang.Integer.class.getName()) || fieldlist[i].getType().getName().equals("int")) {
    						// Integer type
    						try {
    							System.out.println(fieldlist[i].getInt(obj));
    						} catch (IllegalArgumentException e) {
    							// TODO Auto-generated catch block
    							e.printStackTrace();
    						} catch (IllegalAccessException e) {
    							// TODO Auto-generated catch block
    							e.printStackTrace();
    						}
    					}
    					// 其他类型。。。
    					System.out.println("----------
    ");
    				}
    			} catch (Throwable e) {
    				System.err.println(e);
    			}
    		}
    
    	}
    
    }
    

     http://blog.csdn.net/justinavril/article/details/2873664

    http://blog.csdn.net/rugaxm/article/details/8524639 

  • 相关阅读:
    Java实现 蓝桥杯 算法训练 画图(暴力)
    Java实现 蓝桥杯 算法训练 画图(暴力)
    Java实现 蓝桥杯 算法训练 相邻数对(暴力)
    Java实现 蓝桥杯 算法训练 相邻数对(暴力)
    Java实现 蓝桥杯 算法训练 相邻数对(暴力)
    Java实现 蓝桥杯 算法训练 Cowboys
    Java实现 蓝桥杯 算法训练 Cowboys
    55. Jump Game
    54. Spiral Matrix
    50. Pow(x, n)
  • 原文地址:https://www.cnblogs.com/bigben0123/p/4136764.html
Copyright © 2011-2022 走看看