Java I/O - 如何从文件获取URI

import java.io.File;

public class Main {
  public static void main(String args[]) {
    try {
      File testFile = new File("C:\\books\\2004\\test.txt");
      System.out.println(testFile.toURI().toString());
    } catch (Exception exception) {
      System.out.println("exception");
    }
  }
}