java实现将文本中多余的空格去掉

如：解决文本中通过多个空格达到换行的目的，我们将此处的多处空格替换为换行符。 /** * 将文本数据按照换行符进行分割 * @param content * @return */ public static String deleteBlankSpace(String content) { if(content == null || “”.equals(content)) { return “”; } StringBuilder resultSB = new StringBuilder(); //TODO String[] lines = content.split("\n"); //int blankCount = 0;

for(String line : lines) { if(line == null) { continue; } String lineTrim = line.trim(); resultSB.append(dealSpace4OneLine(lineTrim)).append("\n"); } resultSB.deleteCharAt(resultSB.toString().length()-1); return resultSB.toString(); } /** * 将一行数据中多余的空格去除 * @param line * @return */ private static String dealSpace4OneLine(String line) { if(line == null || "".equals(line)) { return ""; } int spaceCount = 0; int firstPosition = 0; StringBuilder sb = new StringBuilder(); for(int i=0;i<line.length();i++) { char curChar = line.charAt(i); if(curChar == ' ') { spaceCount ++; if(spaceCount < 5) { sb.append(" "); }else if(spaceCount == 5){ sb.append("\n"); sb.append(" "); } //do nothing }else { spaceCount = 0; sb.append(curChar); } } return sb.toString(); }