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@@ -23,479 +23,463 @@ import java.util.regex.Pattern;
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*/
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public class StringUtil {
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- /**
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- * Description: 格式化字符串(用户组建表使用) <br>
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- *
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- * @param name
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- * @return String
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- */
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- public static String formatString(String name) {
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- String s = "0000000000" + name;
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- return s.substring(s.length() - 10, s.length());
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- }
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-
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- /**
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- * Description:把GBK转码成ISO8859_1 <br>
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- *
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- * @param name
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- * @return String
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- */
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- public static String getStringByISO(String name) {
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- try {
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- // 防止中文字符出现乱码
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- name = new String(name.getBytes("GBK"), "ISO8859_1");
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- } catch (UnsupportedEncodingException e2) {
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- }
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-
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- return name;
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- }
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-
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- /**
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- * Description:获得格式化的url <br>
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- *
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- * @param url
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- * @return String
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- */
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- public static String getFormatUrl(String url) {
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- if (isNullOrNone(url)) {
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- return "";
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- }
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-
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- if (url.indexOf('?') == -1) {
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- return url + '?';
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- } else {
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- return url + '&';
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- }
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- }
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-
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- /**
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- * Description: 获得字符(byte)的实际长度<br>
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- * 1、…<br>
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- * 2、…<br>
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- * 3、…<br>
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- * 4、…<br>
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- *
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- * @param s
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- * @return int
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- * @exception/throws
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- */
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- public static int lengthByte(String s) {
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- int length = 0;
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- for (int i = 0; i < s.length(); i++) {
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- if (s.charAt(i) <= 127) {
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- length++;
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- } else {
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- length = length + 2;
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- }
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- }
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- return length;
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- }
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-
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- /**
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- * Description: 在jdbc用thin客户端连接oracle里面中文算3个字符<br>
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- *
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- * @param s
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- * @return int
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- * @exception/throws
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- */
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- public static int lengthByteInPrepared(String s) {
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- int length = 0;
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-
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- if (s == null) {
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- return length;
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- }
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-
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- for (int i = 0; i < s.length(); i++) {
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- if (s.charAt(i) <= 127) {
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- length++;
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- } else {
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- length = length + 3;
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- }
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- }
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- return length;
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- }
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-
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- /**
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- * Description:判断字段空null <br>
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- *
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- * @param s
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- * @return boolean
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- */
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- public static boolean isNullOrNone(String s) {
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- if (s == null || "".equals(s.trim())) {
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- return true;
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- }
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-
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- return false;
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- }
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-
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- /**
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- *
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- * Description: 判断对象是否为空<br>
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- *
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- * @param obj
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- * @return boolean
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- * @exception/throws [违例类型] [违例说明]
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- */
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- public static boolean isNullOrNone(Object obj) {
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- if (obj == null) {
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- return true;
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- }
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- if (obj instanceof String) {
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- return isNullOrNone((String) obj);
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- }
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- return false;
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- }
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-
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- /**
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- * Description:判断字段空null <br>
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- *
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- * @param ss
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- * @return boolean
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- */
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- public static boolean isNullOrNone(String[] ss) {
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- if (ss == null || ss.length == 0) {
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- return true;
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- }
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-
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- for (int i = 0; i < ss.length; i++) {
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- if (ss[i] == null || "".equals(ss[i].trim())) {
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- return true;
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- }
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- }
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-
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- return false;
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- }
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-
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- public static int countChar(String src, char c) {
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- if (isNullOrNone(src)) {
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- return 0;
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- }
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-
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- int k = 0;
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- for (int i = 0; i < src.length(); i++) {
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- if (src.charAt(i) == c) {
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- k++;
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- }
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- }
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-
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- return k;
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- }
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-
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- /**
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- * 把'变成 ''
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- *
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- * @param src
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- * @return
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- */
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- public static String oracleString(String src) {
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- if (isNullOrNone(src)) {
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- return "";
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- }
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-
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- return src.replaceAll("'", "''");
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- }
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-
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- /**
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- * 替换函数
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- *
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- * @param
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- * source
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- * @param
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- * find
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- * @param
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- * rep
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- * @return String
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- */
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- public static String replace(String source, String find, String rep) {
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- String result = source;
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- String begin = "";
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- String end = "";
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- int flag;
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-
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- flag = result.indexOf(find, 0);
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-
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- while (flag != -1) {
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- begin = result.substring(0, flag);
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- end = result.substring(flag + (find.length()), result.length());
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- result = begin + rep + end;
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- flag = result.indexOf(find, flag + rep.length());
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- }
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- return result;
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- }
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-
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- /**
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- * 保护截断
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- *
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- * @param s
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- * @param begin
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- * @param end
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- * @return
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- */
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- public static String truncate(String s, int begin, int end) {
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- if (isNullOrNone(s)) {
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- return "";
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- }
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-
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- if (begin < 0) {
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- return "";
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- }
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-
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- if (begin >= end) {
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- return "";
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- }
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-
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- s = s.trim();
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- if (begin >= s.length()) {
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- return "";
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- }
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-
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- if (end >= s.length()) {
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- return s;
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- } else {
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- return s.substring(begin, end);
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- }
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- }
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-
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- /**
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- *
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- * Description: 判断是否为数字<br>
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- * 1、…<br>
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- * 2、…<br>
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- * 3、…<br>
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- * 4、…<br>
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- *
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- * @param str
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- * @return boolean
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- * @exception/throws [违例类型] [违例说明]
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- */
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- public static boolean isNumber(String str) {
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- if (null == str || "".equals(str)) {
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- return false;
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- } else {
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- return Pattern.matches("^[0-9]+$", str);
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- }
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- }
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-
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- /**
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- * Description: 获得字符(byte)的实际长度<br>
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- * 1、…<br>
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- * 2、…<br>
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- * 3、…<br>
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- * 4、…<br>
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- *
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- * @param s
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- * @return int
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- * @exception/throws
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- */
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- public static int realLength(String s) {
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- if (null == s || "".equals(s)) {
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- return 0;
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- } else {
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- return s.getBytes().length;
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- }
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- }
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-
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- /**
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- * Description: 检查非法字符<br>
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- */
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- public static boolean isUnlawfulChar(String s) {
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- if (null == s || "".equals(s)) {
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- return false;
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- } else {
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- return Pattern.matches("^[^`~@#\\$%\\^&\\*\\(\\)=\\!\\+\\\\/\\|<>\\?;\\:\\.'\"\\{\\}\\[\\]??, ]*$", s);
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- }
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- }
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-
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- /**
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- *
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- * Description: 判断是否为字母<br>
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- * 1、…<br>
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- * 2、…<br>
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- * 3、…<br>
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- * 4、…<br>
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- *
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- * @param str
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- * @return boolean
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- * @exception/throws [违例类型] [违例说明]
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- */
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- public static boolean isLetter(String str) {
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- if (null == str || "".equals(str)) {
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- return false;
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- } else {
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- return Pattern.matches("^[A-Za-z]+$", str);
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- }
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- }
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-
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- /**
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- * (source != null) ? source : "";相当于oracle的nvl函数
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- *
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- * @param source
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- * @return String
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- */
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- public static String nvl(String source) {
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- return (source != null) ? source.trim() : "";
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- }
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-
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- /**
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- * Method nvl.
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- *
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- * @param source
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- * String
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- * @param defaultString
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- * String
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- * @return String
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- */
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- public static String nvl(String source, String defaultString) {
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- return (source != null) ? source.trim() : defaultString;
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- }
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-
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- /**
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- * 实现对符合条件的字符串的反转
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- *
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- * @param str
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- * 原始字符串
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- * @return 经过反转处理后的字符串
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- */
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- public static String reverseString(String str) {
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- StringBuffer resultStringBuffer = new StringBuffer();
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- String[] allStr = str.split(" ");
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- StringBuffer sb = new StringBuffer(); // 保存需要进行反转的字符串
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- for (int i = 0; i < allStr.length; i++) {
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- if (meetReverseCondition(allStr[i])) {
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- sb.delete(0, sb.length());
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-
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- // 将需要反转的字符串反转后添加到结果字符串
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- resultStringBuffer.append(sb.append(allStr[i]).reverse()).append(" ");
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- } else {
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- resultStringBuffer.append(allStr[i]).append(" ");
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- }
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- }
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-
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- return resultStringBuffer.deleteCharAt(resultStringBuffer.length() - 1).toString();
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- }
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-
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- /**
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- * 判断字符串是否符合反转条件 本函数被reverseString(String str)调用
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- *
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- * @param str
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- * 需要进行反转处理的字符串
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- * @return true 符合反转条件 false 不符合反转条件
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- */
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- private static boolean meetReverseCondition(String str) {
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- // 如果字符串是以'*'开头并且长度大于1,并且第二个字符是英文,汉字或数字
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- return (str.charAt(0) == '*') && (str.length() > 1) && Character.isLetterOrDigit(str.charAt(1));
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- }
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-
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- /**
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- *
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- * 取字符串的前maxLength长度的字串（一个中文字符为2个长度）
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- *
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- *
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- * @param str
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- * @param maxLength
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- * @return String throws
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- */
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- public static String splitStr(String str, int maxLength) {
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- if (maxLength <= 0) {
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- return "";
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- }
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- String result = str;
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- byte[] bytes = str.getBytes();
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- if (bytes.length > maxLength) {
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-
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- result = new String(bytes, 0, maxLength);
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- if (!result.substring(result.length() - 1).equals(str.substring(result.length() - 1, result.length()))) {
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- result = new String(bytes, 0, maxLength - 1);
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- }
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- }
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-
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- return result;
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- }
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-
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- /**
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- * 判断是否存在
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- *
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- * @param filterStr
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- * @param id
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- * @return boolean
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- */
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- public static boolean isExists(String filterStr, String id) {
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- String[] filterTag = filterStr.split(",");
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- for (int i = 0; i < filterTag.length; i++) {
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- if (id.equals(filterTag[i])) {
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- return true;
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- }
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- }
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- return false;
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- }
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-
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- /**
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- * 格式化时间
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- *
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- * @param
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- * dt
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- * @param
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- * format
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- * @return String
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- */
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- public static String getTime(Date dt, String format) {
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- String time = null;
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- java.text.DateFormat df = new java.text.SimpleDateFormat(format);
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- time = df.format(dt);
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-
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- return time;
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- }
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-
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- public static String[] stringToArray(String str, String start, String end, String split) {
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- if (null == str || "".equals(str))
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- return null;
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- if (str.indexOf(start) == -1 || str.indexOf(end) == -1 || str.indexOf(split) == -1)
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- return new String[] { str };
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- return str.substring(str.indexOf(start) + 1, str.indexOf(end)).split(split);
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- }
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-
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- /**
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- * 判断字符串是否为null或者空
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- *
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- * @param str
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- * @return
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- */
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- public static boolean isEmpty(String str) {
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- return str == null || "".equals(str);
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- }
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-
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- /**
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- * 获取指定长度(按字节长度获取)的字符串，中文算2个字节长度，兼容oracle的 varchar2长度计算方式
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- *
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- * @param src
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- * 源字符串
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- * @param length
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- * 长度
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- * @return
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- */
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- public static String getSubStr(String src, int length) {
|
|
|
- if (StringUtil.isEmpty(src)) {
|
|
|
- return null;
|
|
|
- }
|
|
|
- byte[] b = src.getBytes();
|
|
|
- if (b.length > length) {
|
|
|
- byte[] s = new byte[length];
|
|
|
- for (int i = 0; i < length; i++) {
|
|
|
- s[i] = b[i];
|
|
|
- }
|
|
|
- return new String(s);
|
|
|
- } else {
|
|
|
- return src;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- public static String truncateMessage(String description, int length) {
|
|
|
- org.springframework.util.Assert.state(length > 0);
|
|
|
- if ((description != null) && (description.length() > length)) {
|
|
|
- return description.substring(0, length);
|
|
|
- }
|
|
|
-
|
|
|
- return description;
|
|
|
- }
|
|
|
+ /**
|
|
|
+ * Description: 格式化字符串(用户组建表使用) <br>
|
|
|
+ *
|
|
|
+ * @param name
|
|
|
+ * @return String
|
|
|
+ */
|
|
|
+ public static String formatString(String name) {
|
|
|
+ String s = "0000000000" + name;
|
|
|
+ return s.substring(s.length() - 10, s.length());
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description:把GBK转码成ISO8859_1 <br>
|
|
|
+ *
|
|
|
+ * @param name
|
|
|
+ * @return String
|
|
|
+ */
|
|
|
+ public static String getStringByISO(String name) {
|
|
|
+ try {
|
|
|
+ // 防止中文字符出现乱码
|
|
|
+ name = new String(name.getBytes("GBK"), "ISO8859_1");
|
|
|
+ } catch (UnsupportedEncodingException e2) {
|
|
|
+ }
|
|
|
+
|
|
|
+ return name;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description:获得格式化的url <br>
|
|
|
+ *
|
|
|
+ * @param url
|
|
|
+ * @return String
|
|
|
+ */
|
|
|
+ public static String getFormatUrl(String url) {
|
|
|
+ if (isNullOrNone(url)) {
|
|
|
+ return "";
|
|
|
+ }
|
|
|
+
|
|
|
+ if (url.indexOf('?') == -1) {
|
|
|
+ return url + '?';
|
|
|
+ } else {
|
|
|
+ return url + '&';
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description: 获得字符(byte)的实际长度<br>
|
|
|
+ * 1、…<br>
|
|
|
+ * 2、…<br>
|
|
|
+ * 3、…<br>
|
|
|
+ * 4、…<br>
|
|
|
+ *
|
|
|
+ * @param s
|
|
|
+ * @return int
|
|
|
+ * @exception/throws
|
|
|
+ */
|
|
|
+ public static int lengthByte(String s) {
|
|
|
+ int length = 0;
|
|
|
+ for (int i = 0; i < s.length(); i++) {
|
|
|
+ if (s.charAt(i) <= 127) {
|
|
|
+ length++;
|
|
|
+ } else {
|
|
|
+ length = length + 2;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return length;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description: 在jdbc用thin客户端连接oracle里面中文算3个字符<br>
|
|
|
+ *
|
|
|
+ * @param s
|
|
|
+ * @return int
|
|
|
+ * @exception/throws
|
|
|
+ */
|
|
|
+ public static int lengthByteInPrepared(String s) {
|
|
|
+ int length = 0;
|
|
|
+
|
|
|
+ if (s == null) {
|
|
|
+ return length;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (int i = 0; i < s.length(); i++) {
|
|
|
+ if (s.charAt(i) <= 127) {
|
|
|
+ length++;
|
|
|
+ } else {
|
|
|
+ length = length + 3;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return length;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description:判断字段空null <br>
|
|
|
+ *
|
|
|
+ * @param s
|
|
|
+ * @return boolean
|
|
|
+ */
|
|
|
+ public static boolean isNullOrNone(String s) {
|
|
|
+ if (s == null || "".equals(s.trim())) {
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description: 判断对象是否为空<br>
|
|
|
+ *
|
|
|
+ * @param obj
|
|
|
+ * @return boolean
|
|
|
+ * @exception/throws [违例类型] [违例说明]
|
|
|
+ */
|
|
|
+ public static boolean isNullOrNone(Object obj) {
|
|
|
+ if (obj == null) {
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ if (obj instanceof String) {
|
|
|
+ return isNullOrNone((String) obj);
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description:判断字段空null <br>
|
|
|
+ *
|
|
|
+ * @param ss
|
|
|
+ * @return boolean
|
|
|
+ */
|
|
|
+ public static boolean isNullOrNone(String[] ss) {
|
|
|
+ if (ss == null || ss.length == 0) {
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (int i = 0; i < ss.length; i++) {
|
|
|
+ if (ss[i] == null || "".equals(ss[i].trim())) {
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ public static int countChar(String src, char c) {
|
|
|
+ if (isNullOrNone(src)) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ int k = 0;
|
|
|
+ for (int i = 0; i < src.length(); i++) {
|
|
|
+ if (src.charAt(i) == c) {
|
|
|
+ k++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return k;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 把'变成 ''
|
|
|
+ *
|
|
|
+ * @param src
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static String oracleString(String src) {
|
|
|
+ if (isNullOrNone(src)) {
|
|
|
+ return "";
|
|
|
+ }
|
|
|
+
|
|
|
+ return src.replaceAll("'", "''");
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 替换函数
|
|
|
+ *
|
|
|
+ * @param source
|
|
|
+ * @param find
|
|
|
+ * @param rep
|
|
|
+ * @return String
|
|
|
+ */
|
|
|
+ public static String replace(String source, String find, String rep) {
|
|
|
+ String result = source;
|
|
|
+ String begin = "";
|
|
|
+ String end = "";
|
|
|
+ int flag;
|
|
|
+
|
|
|
+ flag = result.indexOf(find, 0);
|
|
|
+
|
|
|
+ while (flag != -1) {
|
|
|
+ begin = result.substring(0, flag);
|
|
|
+ end = result.substring(flag + (find.length()), result.length());
|
|
|
+ result = begin + rep + end;
|
|
|
+ flag = result.indexOf(find, flag + rep.length());
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 保护截断
|
|
|
+ *
|
|
|
+ * @param s
|
|
|
+ * @param begin
|
|
|
+ * @param end
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static String truncate(String s, int begin, int end) {
|
|
|
+ if (isNullOrNone(s)) {
|
|
|
+ return "";
|
|
|
+ }
|
|
|
+
|
|
|
+ if (begin < 0) {
|
|
|
+ return "";
|
|
|
+ }
|
|
|
+
|
|
|
+ if (begin >= end) {
|
|
|
+ return "";
|
|
|
+ }
|
|
|
+
|
|
|
+ s = s.trim();
|
|
|
+ if (begin >= s.length()) {
|
|
|
+ return "";
|
|
|
+ }
|
|
|
+
|
|
|
+ if (end >= s.length()) {
|
|
|
+ return s;
|
|
|
+ } else {
|
|
|
+ return s.substring(begin, end);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description: 判断是否为数字<br>
|
|
|
+ * 1、…<br>
|
|
|
+ * 2、…<br>
|
|
|
+ * 3、…<br>
|
|
|
+ * 4、…<br>
|
|
|
+ *
|
|
|
+ * @param str
|
|
|
+ * @return boolean
|
|
|
+ * @exception/throws [违例类型] [违例说明]
|
|
|
+ */
|
|
|
+ public static boolean isNumber(String str) {
|
|
|
+ if (null == str || "".equals(str)) {
|
|
|
+ return false;
|
|
|
+ } else {
|
|
|
+ return Pattern.matches("^[0-9]+$", str);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description: 获得字符(byte)的实际长度<br>
|
|
|
+ * 1、…<br>
|
|
|
+ * 2、…<br>
|
|
|
+ * 3、…<br>
|
|
|
+ * 4、…<br>
|
|
|
+ *
|
|
|
+ * @param s
|
|
|
+ * @return int
|
|
|
+ * @exception/throws
|
|
|
+ */
|
|
|
+ public static int realLength(String s) {
|
|
|
+ if (null == s || "".equals(s)) {
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ return s.getBytes().length;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description: 检查非法字符<br>
|
|
|
+ */
|
|
|
+ public static boolean isUnlawfulChar(String s) {
|
|
|
+ if (null == s || "".equals(s)) {
|
|
|
+ return false;
|
|
|
+ } else {
|
|
|
+ return Pattern.matches("^[^`~@#\\$%\\^&\\*\\(\\)=\\!\\+\\\\/\\|<>\\?;\\:\\.'\"\\{\\}\\[\\]??, ]*$", s);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Description: 判断是否为字母<br>
|
|
|
+ * 1、…<br>
|
|
|
+ * 2、…<br>
|
|
|
+ * 3、…<br>
|
|
|
+ * 4、…<br>
|
|
|
+ *
|
|
|
+ * @param str
|
|
|
+ * @return boolean
|
|
|
+ * @exception/throws [违例类型] [违例说明]
|
|
|
+ */
|
|
|
+ public static boolean isLetter(String str) {
|
|
|
+ if (null == str || "".equals(str)) {
|
|
|
+ return false;
|
|
|
+ } else {
|
|
|
+ return Pattern.matches("^[A-Za-z]+$", str);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * (source != null) ? source : "";相当于oracle的nvl函数
|
|
|
+ *
|
|
|
+ * @param source
|
|
|
+ * @return String
|
|
|
+ */
|
|
|
+ public static String nvl(String source) {
|
|
|
+ return (source != null) ? source.trim() : "";
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Method nvl.
|
|
|
+ *
|
|
|
+ * @param source String
|
|
|
+ * @param defaultString String
|
|
|
+ * @return String
|
|
|
+ */
|
|
|
+ public static String nvl(String source, String defaultString) {
|
|
|
+ return (source != null) ? source.trim() : defaultString;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 实现对符合条件的字符串的反转
|
|
|
+ *
|
|
|
+ * @param str 原始字符串
|
|
|
+ * @return 经过反转处理后的字符串
|
|
|
+ */
|
|
|
+ public static String reverseString(String str) {
|
|
|
+ StringBuffer resultStringBuffer = new StringBuffer();
|
|
|
+ String[] allStr = str.split(" ");
|
|
|
+ StringBuffer sb = new StringBuffer(); // 保存需要进行反转的字符串
|
|
|
+ for (int i = 0; i < allStr.length; i++) {
|
|
|
+ if (meetReverseCondition(allStr[i])) {
|
|
|
+ sb.delete(0, sb.length());
|
|
|
+
|
|
|
+ // 将需要反转的字符串反转后添加到结果字符串
|
|
|
+ resultStringBuffer.append(sb.append(allStr[i]).reverse()).append(" ");
|
|
|
+ } else {
|
|
|
+ resultStringBuffer.append(allStr[i]).append(" ");
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return resultStringBuffer.deleteCharAt(resultStringBuffer.length() - 1).toString();
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 判断字符串是否符合反转条件 本函数被reverseString(String str)调用
|
|
|
+ *
|
|
|
+ * @param str 需要进行反转处理的字符串
|
|
|
+ * @return true 符合反转条件 false 不符合反转条件
|
|
|
+ */
|
|
|
+ private static boolean meetReverseCondition(String str) {
|
|
|
+ // 如果字符串是以'*'开头并且长度大于1,并且第二个字符是英文,汉字或数字
|
|
|
+ return (str.charAt(0) == '*') && (str.length() > 1) && Character.isLetterOrDigit(str.charAt(1));
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 取字符串的前maxLength长度的字串（一个中文字符为2个长度）
|
|
|
+ *
|
|
|
+ * @param str
|
|
|
+ * @param maxLength
|
|
|
+ * @return String throws
|
|
|
+ */
|
|
|
+ public static String splitStr(String str, int maxLength) {
|
|
|
+ if (maxLength <= 0) {
|
|
|
+ return "";
|
|
|
+ }
|
|
|
+ String result = str;
|
|
|
+ byte[] bytes = str.getBytes();
|
|
|
+ if (bytes.length > maxLength) {
|
|
|
+
|
|
|
+ result = new String(bytes, 0, maxLength);
|
|
|
+ if (!result.substring(result.length() - 1).equals(str.substring(result.length() - 1, result.length()))) {
|
|
|
+ result = new String(bytes, 0, maxLength - 1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 判断是否存在
|
|
|
+ *
|
|
|
+ * @param filterStr
|
|
|
+ * @param id
|
|
|
+ * @return boolean
|
|
|
+ */
|
|
|
+ public static boolean isExists(String filterStr, String id) {
|
|
|
+ String[] filterTag = filterStr.split(",");
|
|
|
+ for (int i = 0; i < filterTag.length; i++) {
|
|
|
+ if (id.equals(filterTag[i])) {
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 格式化时间
|
|
|
+ *
|
|
|
+ * @param dt
|
|
|
+ * @param format
|
|
|
+ * @return String
|
|
|
+ */
|
|
|
+ public static String getTime(Date dt, String format) {
|
|
|
+ String time = null;
|
|
|
+ java.text.DateFormat df = new java.text.SimpleDateFormat(format);
|
|
|
+ time = df.format(dt);
|
|
|
+
|
|
|
+ return time;
|
|
|
+ }
|
|
|
+
|
|
|
+ public static String[] stringToArray(String str, String start, String end, String split) {
|
|
|
+ if (null == str || "".equals(str))
|
|
|
+ return null;
|
|
|
+ if (str.indexOf(start) == -1 || str.indexOf(end) == -1 || str.indexOf(split) == -1)
|
|
|
+ return new String[]{str};
|
|
|
+ return str.substring(str.indexOf(start) + 1, str.indexOf(end)).split(split);
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 判断字符串是否为null或者空
|
|
|
+ *
|
|
|
+ * @param str
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static boolean isEmpty(String str) {
|
|
|
+ return str == null || "".equals(str);
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 获取指定长度(按字节长度获取)的字符串，中文算2个字节长度，兼容oracle的 varchar2长度计算方式
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+ *
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+ * @param src 源字符串
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+ * @param length 长度
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+ * @return
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+ */
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+ public static String getSubStr(String src, int length) {
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+ if (StringUtil.isEmpty(src)) {
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+ return null;
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+ }
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+ byte[] b = src.getBytes();
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+ if (b.length > length) {
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+ byte[] s = new byte[length];
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+ for (int i = 0; i < length; i++) {
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+ s[i] = b[i];
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+ }
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+ return new String(s);
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|
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+ } else {
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+ return src;
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|
|
+ }
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|
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+ }
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+
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+ public static String truncateMessage(String description, int length) {
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|
|
+ org.springframework.util.Assert.state(length > 0);
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|
|
+ if ((description != null) && (description.length() > length)) {
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+ return description.substring(0, length);
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|
|
+ }
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+
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|
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+ return description;
|
|
|
+ }
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|
|
}
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wuxw