Java基础将Bean属性值放入Map中的实例

package com.wood.util; 
 
import java.lang.reflect.Field; 
import java.util.HashMap; 
import java.util.Map; 
 
/** 
*  
* @ClassName: BeanToMapUtils 
* @Description: TODO 
* @author  wood 
* @date   2014-10-31 下午09:52:41 
* 
 */ 
public class BeanToMapUtils { 
  /** 
   * getFileds获取所有public 属性<br/> 
   * getDeclaredFields 获取所有声明的属性<br/> 
   * @param bean 
   * @return 将某个类及其继承属性全部添加到Map中 
   */ 
  public static Map<String,Object> beanToMap(Object bean){ 
    Map<String,Object> result = new HashMap<String,Object>(); 
    if(bean==null){ 
      return result; 
    } 
     
    Field[] fields = bean.getClass().getDeclaredFields(); 
    if(fields==null||fields.length==0){ 
      return result; 
    } 
     
    for(Field field:fields){ 
      //重置属性可见(而且一般属性都是私有的)，否则操作无效 
      boolean accessible = field.isAccessible(); 
      if(!accessible){ 
        field.setAccessible(true); 
      } 
       
      //获取属性名称及值存入Map 
      String key = field.getName(); 
      try { 
        result.put(key, field.get(bean)); 
      } catch (IllegalArgumentException e) { 
        e.printStackTrace(); 
      } catch (IllegalAccessException e) { 
        e.printStackTrace(); 
      } 
       
      //还原属性标识 
      field.setAccessible(accessible); 
    } 
     
    //获取父类属性 
    fields = bean.getClass().getSuperclass().getDeclaredFields(); 
    if(fields==null||fields.length==0){ 
      return result; 
    } 
     
    for(Field field:fields){ 
      //重置属性可见(而且一般属性都是私有的)，否则操作无效 
      boolean accessible = field.isAccessible(); 
      if(!accessible){ 
        field.setAccessible(true); 
      } 
       
      //获取属性名称及值存入Map 
      String key = field.getName(); 
      try { 
        result.put(key, field.get(bean)); 
      } catch (IllegalArgumentException e) { 
        e.printStackTrace(); 
      } catch (IllegalAccessException e) { 
        e.printStackTrace(); 
      } 
       
      //还原属性标识 
      field.setAccessible(accessible); 
    } 
     
    return result; 
  } 
   
  public static void main(String[] args) { 
    Dog info = new Dog(); 
    info.setCountry("cc"); 
    info.setName("Dog"); 
     
    info.setCategory("gram"); 
    info.setOwner("wang"); 
     
    System.out.println(beanToMap(info)); 
  } 
}