Java 7 zip 文件系统提供程序似乎不接受 URI 中的空格

我一直在测试所有可能的变体和排列，但我似乎无法使用包含空格的路径（URI）的zip/jar方案构建FileSystemProvider。Oracle Docs上有一个非常简单的测试用例。我冒昧地修改了示例，只是向URI添加空格，然后它就停止工作了。下面的片段：

import java.util.*;
import java.net.URI;
import java.nio.file.*;

public class Test {
    public static void main(String [] args) throws Throwable {
        Map<String, String> env = new HashMap<>(); 
        env.put("create", "true");
        URI uri = new URI("jar:file:/c:/dir%20with%20spaces/zipfstest.zip");
        Path dir = Paths.get("C:\\dir with spaces");
        if(Files.exists(dir) && Files.isDirectory(dir)) {
            try (FileSystem zipfs = FileSystems.newFileSystem(uri, env)) {}
        }
    }
}

当我执行此代码（Windows，JDK7u2，x32和x64）时，我得到以下异常：

java.lang.IllegalArgumentException: Illegal character in path at index 12: file:/c:/dir with spaces/zipfstest.zip
    at com.sun.nio.zipfs.ZipFileSystemProvider.uriToPath(ZipFileSystemProvider.java:87)
    at com.sun.nio.zipfs.ZipFileSystemProvider.newFileSystem(ZipFileSystemProvider.java:107)
    at java.nio.file.FileSystems.newFileSystem(FileSystems.java:322)
    at java.nio.file.FileSystems.newFileSystem(FileSystems.java:272)

如果我使用 + 而不是 %20 作为空格转义字符，则会引发不同的异常：

java.nio.file.NoSuchFileException: c:\dir+with+spaces\zipfstest.zip
    at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:79)
    at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97)
    at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:102)
    at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(WindowsFileSystemProvider.java:229)
    at java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:430)
    at java.nio.file.Files.newOutputStream(Files.java:170)
    at com.sun.nio.zipfs.ZipFileSystem.<init>(ZipFileSystem.java:116)
    at com.sun.nio.zipfs.ZipFileSystemProvider.newFileSystem(ZipFileSystemProvider.java:117)
    at java.nio.file.FileSystems.newFileSystem(FileSystems.java:322)
    at java.nio.file.FileSystems.newFileSystem(FileSystems.java:272)

我可能错过了一些非常明显的东西，但这是否表明提供的ZIP / JAR文件系统提供程序存在问题？

编辑：

另一个基于 File 对象的用例，如 coments 中所请求的：

import java.io.File;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.nio.file.FileSystems;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

public class Test {
    public static void main(String[] args) throws UnsupportedEncodingException {
        try {
            File zip = new File("C:\\dir with spaces\\file.zip");
            URI uri = URI.create("jar:" + zip.toURI().toURL());
            Map<String, String> env = new HashMap<>();
            env.put("create", "true");
            if(zip.getParentFile().exists() && zip.getParentFile().isDirectory()) {
                FileSystems.newFileSystem(uri, env);
            }
        } catch (Exception ex) {
            Logger.getAnonymousLogger().log(Level.SEVERE, null, ex);
            System.out.println();
        }
    }
}

异常再次引发，如下所示：

java.lang.IllegalArgumentException: Illegal character in path at index 12: file:/C:/dir with spaces/file.zip
    at com.sun.nio.zipfs.ZipFileSystemProvider.uriToPath(ZipFileSystemProvider.java:87)
    at com.sun.nio.zipfs.ZipFileSystemProvider.newFileSystem(ZipFileSystemProvider.java:107)
    at java.nio.file.FileSystems.newFileSystem(FileSystems.java:322)
    at java.nio.file.FileSystems.newFileSystem(FileSystems.java:272)