Map转xml

今日问题 小记之

工作中我们有时会遇到map转换xml的需求 今天特意记下 话不多说 直接上代码 使用递归的思路

public static String map2Xml(Map<String, Object> paramMap) {
synchronized (MapUtil.class) {
StringBuilder strBuilder = new StringBuilder();
strBuilder.append(“\n”);
strBuilder.append(““);
Set objSet = paramMap.keySet();
for (String key : objSet) {
if (key == null) {
continue;
}
strBuilder.append(“\n”);
strBuilder.append(“<”).append(key).append(“>\n”);
Object value = paramMap.get(key);
strBuilder.append(convert(value));
strBuilder.append(“</“).append(key).append(“>”);
}
strBuilder.append(“\n“);
return strBuilder.toString();
}
}

public static String convert(Map map) {
    StringBuilder strBuilder = new StringBuilder();
    for (Object o : map.keySet()) {
        strBuilder.append("<").append(o).append(">");
        strBuilder.append(convert(map.get(o)));
        strBuilder.append("</").append(o).append(">\n");
    }
    return strBuilder.toString();
}

public static String convert(Collection<?> objects) {
    StringBuilder strBuilder = new StringBuilder("\n");
    for (Object obj : objects) {
        strBuilder.append("<").append(obj).append(">");
        strBuilder.append(convert(obj));
        strBuilder.append("</").append(obj).append(">\n");
    }
    return strBuilder.toString();
}

/**
 * 描述：递归进行转换
 * Created by zjw on 2018-12-11 11:21:37
 *
 * @param object
 * @return String
 */
public static String convert(Object object) {
    if (object instanceof Map) {
        return convert((Map)object);
    }
    if (object instanceof Collection) {
        return convert((Collection<?>) object);
    }
    StringBuilder strBuilder = new StringBuilder();
    if (isObject(object)) {
        Class<?> clz = object.getClass();
        Field[] fields = clz.getDeclaredFields();

        for (Field field : fields) {
            field.setAccessible(true);
            String fieldName = field.getName();
            Object value;
            try {
                value = field.get(object);
            } catch (IllegalArgumentException | IllegalAccessException e) {
                continue;
            }
            strBuilder.append("<").append(fieldName).append("\">");
            if (isObject(value)) {
                strBuilder.append(convert(value));
            } else {
                strBuilder.append(value.toString());
            }
            strBuilder.append("</").append(fieldName).append(">");
        }
    } else if (object == null) {
        strBuilder.append("null");
    } else {
        strBuilder.append(object.toString());
    }
    return strBuilder.toString();
}

/**
 * 描述：判断是否是对象
 * Created by zjw on 2018-12-11 11:20:48
 *
 * @param obj
 * @return boolean
 */
private static boolean isObject(Object obj) {
    if (obj == null) return false;
    if (obj instanceof String) return false;
    if (obj instanceof Integer) return false;
    if (obj instanceof Double) return false;
    if (obj instanceof Float) return false;
    if (obj instanceof Byte) return false;
    if (obj instanceof Long) return false;
    if (obj instanceof Character) return false;
    if (obj instanceof Short) return false;
    return !(obj instanceof Boolean);
}

public static void main(String[] args) {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
    Map<String, Object> reqParamMap = new HashMap<>();
    Map<String, Object> pubInfoMap = new HashMap<>();
    Map<String, Object> busInfoMap = new HashMap<>();
    reqParamMap.put("PUB_INFO", pubInfoMap);
    reqParamMap.put("BUSI_INFO", busInfoMap);
    pubInfoMap.put("REQ_TIME", sdf.format(new Date()));
    pubInfoMap.put("CHANNLE_ID", "789");
    pubInfoMap.put("REGION_ID", "123");
    pubInfoMap.put("REQ_SERIAL_NO", "20181211");
    pubInfoMap.put("PROCESS_CODE", "TokenCheck");
    busInfoMap.put("TOKEN", "testToken");
    // busInfoMap.put("list", Arrays.asList("abc", "def"));
    System.out.println(GsonUtil.toJson(reqParamMap));
    System.out.println(MapUtil.map2Xml(reqParamMap));
}