标签:reg arch user search hone 种类 except exce int
第一种 类似于python的re.search("\d+","123")
import java.io.*; import java.util.*; import java.util.regex.*; public class test { public static void readFile() throws IOException { //类似于 File f = new File("C:\\Users\\15773\\Desktop\\简历投递\\新建文本文档.txt"); FileReader reader = new FileReader(f); BufferedReader br = new BufferedReader(reader); //按行读取 String line; String regex="\\d+"; while ((line = br.readLine()) != null){ // System.out.println(line); if (line.matches(regex)){//类似于re.search(pattern,string) System.out.println(line+":matching regex"); }else { System.out.println(line+":not matching regex"); } } br.close(); } public static void main(String[] args) throws IOException{ test.readFile(); } }
第二种类似于python的pattern,search,group
这种方式和python一样,适用于需要重复匹配,效率高
import java.io.*; import java.util.*; import java.util.regex.*; public class test { public static void readFile() throws IOException { //第一步确定pattern Pattern pattern = Pattern.compile("(\\d+)"); //第二部进行匹配 Matcher matcher = pattern.matcher("phone number is 123445"); if (matcher.find()){ System.out.println("匹配到了 "+ matcher.group(0)); }else{ System.out.println("没有匹配到"); } } public static void main(String[] args) throws IOException{ test.readFile(); } }
关于文件读取的操作:https://blog.csdn.net/weixin_43139592/article/details/105283446
标签:reg arch user search hone 种类 except exce int
原文地址:https://www.cnblogs.com/shunguo/p/14496343.html