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));   } }