public class XssUtil {
  private static Map<String, String> xssMap = new LinkedHashMap<String, String>();
  private static Map<String, String> xssNewMap = new LinkedHashMap<String, String>();

  static {
    init();
  }

  public static void init() {
    // 含有腳本： script
    xssMap.put("[s|S][c|C][r|R][i|C][p|P][t|T]", "");
    // 含有腳本 javascript
    xssMap.put("[\\\"\\\'][\\s]*[j|J][a|A][v|V][a|A][s|S][c|C][r|R][i|I][p|P][t|T]:(.*)[\\\"\\\']", "\"\"");
    // 含有函數(shù)： eval
    xssMap.put("[e|E][v|V][a|A][l|L]\\((.*)\\)", "");
    // 含有符號 <
    xssMap.put("<", "<");
    // 含有符號 >
    xssMap.put(">", ">");
    // 含有符號 (
    xssMap.put("\\(", "(");
    // 含有符號 )
    xssMap.put("\\)", ")");
    // 含有符號 '
    xssMap.put("'", "'");
  }
  

  /**
   * 清除惡意的XSS腳本
   */
  public synchronized static String cleanXSS(String value) {
    String result = value;
    for (Map.Entry<String, String> entry : xssMap.entrySet()) {
      String key = entry.getKey();
      String val = entry.getValue();
      result = result.replaceAll(key, val);
    }
    return result;
  }

/**
   * emoji表情字符正則表達式
   */
  private static final String EMOJI_REGEX = "[\\s\\S]*[\\ud800\\udc00-\\udbff\\udfff\\ud800-\\udfff][\\s\\S]*";
  
  public static boolean hasEmojiStr(String str){
    String notBlankStr = org.apache.commons.lang3.StringUtils.trimToEmpty(str);
    return notBlankStr.matches(EMOJI_REGEX);
  }