将javabean转换成Map

public static Map<String, Object> getparamsToIndex(Object obj) {
		Map<String, Object> params = new HashMap<String, Object>(0);
		try {
			PropertyUtilsBean propertyUtilsBean = new PropertyUtilsBean();
			PropertyDescriptor[] descriptors = propertyUtilsBean.getPropertyDescriptors(obj);
			for (int i = 0; i < descriptors.length; i++) {
				String name = descriptors[i].getName();
				if (!StringUtils.equals(name, "class")) {
					params.put(propertyToField(name), propertyUtilsBean.getNestedProperty(obj, name));
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return params;
	}

 /**

	 * 对象属性转换为字段  例如：userName to user_name
	 * @param property 字段名
	 * @return
	 */
	public static String propertyToField(String property) {
		if (null == property) {
			return "";
		}
		char[] chars = property.toCharArray();
		StringBuffer sb = new StringBuffer();
		for (char c : chars) {
			if (CharUtils.isAsciiAlphaUpper(c)) {
				sb.append("_" + StringUtils.lowerCase(CharUtils.toString(c)));
			} else {
				sb.append(c);
			}
		}
		return sb.toString();
	}

	/**
	 * 字段转换成对象属性 例如：user_name to userName
	 * @param field
	 * @return
	 */
	public static String fieldToProperty(String field) {
		if (null == field) {
			return "";
		}
		char[] chars = field.toCharArray();
		StringBuffer sb = new StringBuffer();
		for (int i = 0; i < chars.length; i++) {
			char c = chars[i];
			if (c == '_') {
				int j = i + 1;
				if (j < chars.length) {
					sb.append(StringUtils.upperCase(CharUtils.toString(chars[j])));
					i++;
				}
			} else {
				sb.append(c);
			}
		}
		return sb.toString();
	}