java - Windows 上的 NIO Files.createTempDirectory 导致异常

Question

我有一些代码应该在系统上的临时文件位置创建一个临时目录:

try {
            Path tempdir = Files.createTempDirectory("tempmm");
            tempdir.toFile().deleteOnExit();
            tempFilename = format("%s/%s.zip", tempdir, meetId);

            // Handle windows
            //tempFilename = tempFilename.replace("\\", "/");

            uri = URI.create("jar:file:" + tempFilename);

            System.out.println("temp file uri = " + uri.toString());

        } catch (IOException e) {
            log.severe(format("Unable to create temporary directory: %s", e.toString()));
    }

和

try (FileSystem zipfs = FileSystems.newFileSystem(uri, new HashMap<String, String>() {{ put("create", "true"); }})) {

            Path externalMMFile = Paths.get(filePath);
            Path pathInZipfile = zipfs.getPath(externalMMFile.getFileName().toString());

            // copy Meet Manager Database file into the zip file
            Files.copy(externalMMFile,pathInZipfile, StandardCopyOption.REPLACE_EXISTING );
        } catch (IOException e) {
            log.severe("Unable to create zip upload file!");
            System.out.println(e.toString());
            return false;
 }

这是发生的异常:

java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: Ill
egal character in opaque part at index 11: jar:file:C:\DOCUME~1\David\LOCALS~1\T
emp\tempmm6286934818003944424/107.zip
java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: Ill
egal character in opaque part at index 11: jar:file:C:\DOCUME~1\David\LOCALS~1\T
emp\tempmm6286934818003944424/107.zip

有人知道我如何以独立于平台的方式做到这一点吗？

Answer 1

我发现了问题。像这样的 URI:

jar:file:C:/temp/yourmum.zip

不适用于 Windows。应该是:

jar:file:/C:/temp/yourmum.zip

所以我这样做了:

try {
        Path tempdir = Files.createTempDirectory("tempmm");
        tempdir.toFile().deleteOnExit();
        tempFilename = format("%s" + File.separator + "%s.zip", tempdir, meetId);

        if (tempFilename.contains(":\\")) {
            tempFilename = "/" + tempFilename;
        }

        // Handle windows
        tempFilename = tempFilename.replace("\\", "/");

        System.out.println("tempFilename = " + tempFilename);

        uri = URI.create("jar:file:" + tempFilename);

        System.out.println("temp file uri = " + uri.toString());

    } catch (IOException e) {
        log.severe(format("Unable to create temporary directory: %s", e.toString()));
    }

我不知道这是否是最好的解决方案，但它对我有用。波浪号不全是问题，问题在于分隔符。