有意思的String字符工具类

  1 public class StringUtils {
  2     
  3     
  4     private static final String regEx_script = "<script[^>]*?>[\\s\\S]*?<\\/script>"; // 定义script的正则表达式
  5     private static final String regEx_style = "<style[^>]*?>[\\s\\S]*?<\\/style>"; // 定义style的正则表达式
  6     private static final String regEx_html = "<[^>]+>"; // 定义HTML标签的正则表达式
  7     private static final String regEx_space = "\\s*|\t|\r|\n";//定义空格回车换行符
  8     
  9     /**
 10      * @param htmlStr
 11      * @return
 12      *  删除Html标签
 13      */
 14     public static String delHTMLTag(String htmlStr) {
 15         Pattern p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE);
 16         Matcher m_script = p_script.matcher(htmlStr);
 17         htmlStr = m_script.replaceAll(""); // 过滤script标签
 18 
 19         Pattern p_style = Pattern.compile(regEx_style, Pattern.CASE_INSENSITIVE);
 20         Matcher m_style = p_style.matcher(htmlStr);
 21         htmlStr = m_style.replaceAll(""); // 过滤style标签
 22 
 23         Pattern p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);
 24         Matcher m_html = p_html.matcher(htmlStr);
 25         htmlStr = m_html.replaceAll(""); // 过滤html标签
 26 
 27         Pattern p_space = Pattern.compile(regEx_space, Pattern.CASE_INSENSITIVE);
 28         Matcher m_space = p_space.matcher(htmlStr);
 29         htmlStr = m_space.replaceAll(""); // 过滤空格回车标签
 30         return htmlStr.trim(); // 返回文本字符串
 31     }
 32     
 33     
 34     public static String join(String[] strs, String split) {
 35         if (strs == null || strs.length == 0) {
 36             return "";
 37         }
 38         StringBuffer sb = new StringBuffer();
 39         sb.append(strs[0]);
 40         for (int i = 1; i < strs.length; i++) {
 41             if (split != null) {
 42                 sb.append(split);
 43             }
 44 
 45             sb.append(strs[i]);
 46         }
 47 
 48         return sb.toString();
 49     }
 50 
 51     public static String validString(String str) {
 52         return TextUtils.isEmpty(str) ? "" : str;
 53     }
 54 
 55     public static String ToDBC(String input) {
 56         if (null == input) {
 57             return "";
 58         }
 59 
 60         char[] c = input.toCharArray();
 61         for (int i = 0; i < c.length; i++) {
 62             if (c[i] == 12288) {
 63                 c[i] = (char) 32;
 64                 continue;
 65             }
 66             if (c[i] > 65280 && c[i] < 65375)
 67                 c[i] = (char) (c[i] - 65248);
 68         }
 69         return new String(c);
 70     }
 71 
 72     
 73     /**
 74      * 验证输入的邮箱格式是否符合
 75      * 
 76      * @param email
 77      * @return 是否合法
 78      */
 79     public static boolean isEmail(String email) {
 80         boolean tag = true;
 81         final String pattern1 = "^([a-z0-9A-Z]+[-|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$";
 82         final Pattern pattern = Pattern.compile(pattern1);
 83         final Matcher mat = pattern.matcher(email);
 84         if (!mat.find()) {
 85             tag = false;
 86         }
 87         return tag;
 88     }
 89     /**
 90      * str -- >yyyy-MM-dd
 91      * 
 92      * @param strDate
 93      * @return
 94      */
 95     @SuppressLint("SimpleDateFormat")
 96     public static Date toDate(String strDate) {
 97         Date date = null;
 98         try {
 99             SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
100             date = sdf.parse(strDate);
101         } catch (ParseException e) {
102             System.out.println(e.getMessage());
103         }
104         return date;
105 
106     }
107 }