java - 即使我设置为 true，ZipFile.isSplitArchive 仍返回 false

Question

        // Initiate ZipFile object with the path/name of the zip file.
        ZipFile zipFile = new ZipFile("c:\\ZipTest\\CreateSplitZipFileFromFolder.zip");

        // Initiate Zip Parameters which define various properties such
        // as compression method, etc.
        ZipParameters parameters = new ZipParameters();

        // set compression method to store compression
        parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);

        // Set the compression level. This value has to be in between 0 to 9
        parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);

        // Create a split file by setting splitArchive parameter to true
        // and specifying the splitLength. SplitLenth has to be greater than
        // 65536 bytes
        // Please note: If the zip file already exists, then this method throws an 
        // exception
        zipFile.createZipFileFromFolder("C:\\ZipTest", parameters, true, 10485760);

我从使用 zip4j 的示例代码中复制了此代码，特别是名为 CreateSplitZipFileFromFolder.java

的文件

问题是，即使我将createZipFileFromFolder的第三个参数设置为true，当我调用方法ZipFile.isSplitArchive()时，它仍然会返回false

从 grepcode 看来，它只是将 ZipModel 对象设置为我设置的 boolean 标志，但我得到了不同的值。有什么想法吗？

Answer 1

您生成的 ZIP 文件是否大于 splitLength 字节(在您的示例中为 10485760)？来自 createZipFile 的 splitLength 文档

if archive has to be split, then length in bytes at which it has to be split

我假设只有当分割的 Zip 文件大于该大小时才会创建它。