检索jar包里的关键词

package file_utils;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Enumeration;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
 * 检索jar包里的关键词
 */
public class FindForJarIndex {

    private static final String path = "I:\\Android\\04test\\Wateen\\app\\libs"; //jar包父目录
    private static final String keywords = "getMessageFormat"; //关键字

    public static void indesJar(String path, String keywords) {
        File file = new File(path);
        final Pattern p = Pattern.compile(".+\\.jar$");
        File[] files = file.listFiles(new FileFilter() {
            @Override
            public boolean accept(File pathname) {
                return p.matcher(pathname.getPath()).matches();
            }
        });

        search(files,keywords);
    }

    private static void search(File[] files, String keywords) {
        try {
            for (File f : files) {
                if (f.isDirectory()) {
                    search(f.listFiles(), keywords);
                } else {
                    ZipFile jar = new ZipFile(f);
                    Enumeration enumration = jar.entries();
                    while (enumration.hasMoreElements()) {
                        ZipEntry zipEntry = (ZipEntry) enumration.nextElement();

                        InputStreamReader isr = new InputStreamReader(jar.getInputStream(zipEntry));
                        BufferedReader br = new BufferedReader(isr);
                        String line = br.readLine();
                        int line_num = 1;
                        while (null != line) {
//                            System.out.println(line);
                            if (line.contains(keywords)) {
                                System.out.println(
                                    f.getPath() + "," + zipEntry.getName() + "," + "line number = "
                                        + line_num);
                            }
                            line = br.readLine();
                            line_num++;
                        }
                    }
                }
            }
        } catch (IOException io_e) {
            io_e.printStackTrace();
        }
    }
}