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/** * 字符串按字節(jié)截取 * @param str 原字符 * @param len 截取長(zhǎng)度 * @param elide 省略符等追加到截取完的后邊 * @return String */ public static String splitString(String str,int len,String elide) { if(str == null) { return ""; } byte[] strByte = str.getBytes(); int strLen = strByte.length; int elideLen = (elide.trim().length() == 0) ? 0 : elide.getBytes().length; if (len >= strLen || len < 1) { return str; } if (len - elideLen > 0) { len = len - elideLen; } int count = 0; for (int i = 0; i < len; i++) { int value = (int) strByte[i]; if (value < 0) { count++; } } if (count%2 != 0) { len = (len == 1)?len+1:len - 1; } return new String(strByte, 0, len) + elide.trim(); } |
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