查找jar包中.class文件关键字(变量名，字符串)

原文链接:https://www.cnblogs.com/hithlb/p/3906151.html

侵删

package test;

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;

public class FindForJarIndex {

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

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

        search(files);
    }

    private static void search(File[] files) {
        try {
            for (File f : files) {
                if (f.isDirectory()) {
                    search(f.listFiles());
                } 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();
        }
    }
}