java - 在运行时获取jar版本

我想知道是否可以在运行时检索该类来自的jar的版本号？

我知道有可能找到该类来自的jar:

MyClass.class.getProtectionDomain().getCodeSource().getLocation().getPath();

但是版本呢？

(假设其不在文件名中:)

最佳答案

import javax.mail.internet.InternetAddress;

/**
Display package name and version information for javax.mail.internet.
*/
public final class ReadVersion {
  public static void main(String... aArgs){
    ReadVersion readVersion = new ReadVersion();
    readVersion.readVersionInfoInManifest();
  }

  public void readVersionInfoInManifest(){
    InternetAddress object = new InternetAddress();
    Package objPackage = object.getClass().getPackage();
    //examine the package object
    String name = objPackage.getSpecificationTitle();
    String version = objPackage.getSpecificationVersion();
    //some jars may use 'Implementation Version' entries in the manifest instead
    System.out.println("Package name: " + name);
    System.out.println("Package version: " + version);
  }
}

关于java - 在运行时获取jar版本，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/21724145/