使用Java正则表达式批量提取文本信息

 1 import java.io.BufferedReader;
 2 import java.io.BufferedWriter;
 3 import java.io.File;
 4 import java.io.FileReader;
 5 import java.io.FileWriter;
 6 import java.io.IOException;
 7 import java.util.regex.Matcher;
 8 import java.util.regex.Pattern;
 9 
10 public class TextExtract {
11     public static void main(String[] args) throws IOException {
12         File f = new File("in.txt");
13         File out = new File("out.txt");
14         Pattern pattern = Pattern.compile("your regex");
15         BufferedReader br = new BufferedReader(new FileReader(f));
16         BufferedWriter bw = new BufferedWriter(new FileWriter(out));
17         String s = null;
18         while((s = br.readLine())!=null){
19             Matcher matcher = pattern.matcher(s);
20             while(matcher.find()){
21                 bw.write(matcher.group());
22                 bw.newLine();
23             }
24             //bw.newLine();写入换行
25             bw.flush();
26         }
27     }
28 }