将字符串截短，取前n个字符，英文算半个字符

/** * 将字符串截短，取前n个字符，英文算半个字符。 * @param orignalString 原字符串 * @param length 长度 * @param chopedString 超过部分的表示字符串 * @return 截取的字符串 */ public static String chop(String orignalString,int length,String chopedString) { if (orignalString==null||orignalString.length()==0) { return orignalString; } orignalString=orignalString.replaceAll(" "," "); if (orignalString.length()<length) { return orignalString; } StringBuffer buffer=new StringBuffer(length); length=length*2; int count=0; int stringLength=orignalString.length(); int i=0; for (;count<length&&i<stringLength;i++) { char c=orignalString.charAt(i); if (c<'\u00ff') { count++; } else { count+=2; } buffer.append(c); } if (i<stringLength) { buffer.append(chopedString); } return buffer.toString(); }