對於多行文本,你直接通過replace,replaceAll是不能將空行刪除的,你需要遍歷這些行,對每行文本進行操作,最後把返回新的文本纔行。
public static String removeMultiRowBlank(String msg) {
InputStream is = new ByteArrayInputStream(msg.getBytes());
BufferedReader br = null;
String tmp;
StringBuilder stringBuilder = new StringBuilder();
int i = 0;
try {
br = new BufferedReader(new InputStreamReader(is, "utf-8"));
while ((tmp = br.readLine()) != null) {
if (StringUtils.isBlank(tmp)) ;
else {
stringBuilder.append(tmp + "\n");
i++;
System.out.println(i);
}
}
is.close();
} catch (IOException e) {
e.printStackTrace();
}
return stringBuilder.toString();
}
通過上面的方法,將把上圖中第一行(空行)刪除,並返回處理後的字符串。