Java中bean与map怎么进行转化

[java]    @SuppressWarnings({ "rawtypes", "unchecked" })   public static Map convertBean(Object bean)       throws IntrospectionException, IllegalAccessException, InvocationTargetException {     Class type = bean.getClass();     Map returnMap = new HashMap();     BeanInfo beanInfo = Introspector.getBeanInfo(type);     PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();     for (int i = 0; i< propertyDescriptors.length; i++) {       PropertyDescriptor descriptor = propertyDescriptors[i];       String propertyName = descriptor.getName();       if (!propertyName.equals("class")) {         Method readMethod = descriptor.getReadMethod();         Object result = readMethod.invoke(bean, new Object[0]);         if (result != null) {           returnMap.put(propertyName, result);         } else {           returnMap.put(propertyName, "");         }       }     }     return returnMap;   }