摘要：package cmd;import java.util.regex.Matcher;import java.util.regex.Pattern;public class RuntimeTest {public static void main(String[] args) {String str = "sdfs sdf\r\ndf dfdfd\taa";System.out.println(str);Pattern pattern = Pattern.compile("\\s*|\r|\n|\t"); \\s 空格；\r 换行；\n 回车；\t 水平 阅读全文