只需使用FindClassInJars util，这是一个简单的swing程序，但很有用。您可以在http://code.google.com/p/find-class-in-jars/上查看源代码或下载jar文件

我一直在Windows上使用它，效果非常好。

findstr /s /m /c:"package/classname" *.jar, where

findstr.exe是Windows和参数的标准配置:

/s =递归 /m =如果有匹配，只打印文件名 /c =字面字符串(在这种情况下，你的包名+类名 以“/”分隔)

希望这能帮助到一些人。

还有两个不同的实用程序，称为“JarScan”，可以完全满足您的要求: JarScan (inetfeedback.com)和JarScan (java.net)

要在一个jar文件夹(及其子文件夹)中找到一个类: https://jarscan.com/

Usage: java -jar jarscan.jar [-help | /?]
                    [-dir directory name]
                    [-zip]
                    [-showProgress]
                    <-files | -class | -package>
                    <search string 1> [search string 2]
                    [search string n]

Help:
  -help or /?           Displays this message.

  -dir                  The directory to start searching
                        from default is "."

  -zip                  Also search Zip files

  -showProgress         Show a running count of files read in

  -files or -class      Search for a file or Java class
                        contained in some library.
                        i.e. HttpServlet

  -package              Search for a Java package
                        contained in some library.
                        i.e. javax.servlet.http

  search string         The file or package to
                        search for.
                        i.e. see examples above

例子:

java -jar jarscan.jar -dir C:\Folder\To\Search -showProgress -class GenericServlet

使用这个. .你可以在类路径..中找到任何文件。保证. .

import java.net.URL;
import java.net.URLClassLoader;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class FileFinder {

    public static void main(String[] args) throws Exception {

        String file = <your file name>;

        ClassLoader cl = ClassLoader.getSystemClassLoader();

        URL[] urls = ((URLClassLoader)cl).getURLs();

        for(URL url: urls){
            listFiles(file, url);
        }
    }

    private static void listFiles(String file, URL url) throws Exception{
        ZipInputStream zip = new ZipInputStream(url.openStream());
          while(true) {
            ZipEntry e = zip.getNextEntry();
            if (e == null)
              break;
            String name = e.getName();
            if (name.endsWith(file)) {
                System.out.println(url.toString() + " -> " + name);
            }
          }
    }

}

查找匹配给定字符串的jar:

找到。name \*.jar -exec grep -l YOUR_CLASSNAME {} \;