在BlackBerry Java应用程序中压缩文件

有人知道如何使用ZipoutStream压缩文件吗

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数据应写入ZipoutStream zinstream，而不是写入新的OutputStream out

书写完成后关闭ZipEntry条目也很重要

FileConnection path = (FileConnection) Connector.open(
        "file:///SDCard/BlackBerry/documents/" + "status.zip",
        Connector.READ_WRITE);

if (!path.exists()) {
    path.create();
}
ZipOutputStream zinstream = new ZipOutputStream(path.openOutputStream());

// Adding Entries
FileConnection jsonfile = (FileConnection) Connector.open(
        "file:///SDCard/BlackBerry/documents/" + "status.json",
        Connector.READ_WRITE);
if (!jsonfile.exists()) {
    jsonfile.create();
}
int fileSize = (int) jsonfile.fileSize();
if (fileSize > -1) {
    InputStream input = jsonfile.openInputStream();
    byte[] data = new byte[1024];

    ZipEntry entry = new ZipEntry(jsonfile.getName());
    zinstream.putNextEntry(entry);

    int len;
    while ((len = input.read(data)) > 0) {
        zinstream.write(data, 0, len);
    }
    zinstream.closeEntry();
}
jsonfile.close();
zinstream.close();
path.close();

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BlackBerry使用J2MEAPI，它没有所有的J2SE类，比如ZipoutStream和ZipEntry以及相关的类。有些类，如ZLibOutputStream，可能会有所帮助，但这只是字节级压缩，除非有第三方库可以为您实现，否则您将不得不自己实现实际的PKZIP容器。

您会遇到什么错误？我已经下载了用于此任务的ZipME。谢谢你的建议！非常感谢你。它现在工作得很好。我没有意识到输出应该是ZipOutputStream而不是OutputStream

FileConnection path = (FileConnection) Connector.open(
        "file:///SDCard/BlackBerry/documents/" + "status.zip",
        Connector.READ_WRITE);

if (!path.exists()) {
    path.create();
}
ZipOutputStream zinstream = new ZipOutputStream(path.openOutputStream());

// Adding Entries
FileConnection jsonfile = (FileConnection) Connector.open(
        "file:///SDCard/BlackBerry/documents/" + "status.json",
        Connector.READ_WRITE);
if (!jsonfile.exists()) {
    jsonfile.create();
}
int fileSize = (int) jsonfile.fileSize();
if (fileSize > -1) {
    InputStream input = jsonfile.openInputStream();
    byte[] data = new byte[1024];

    ZipEntry entry = new ZipEntry(jsonfile.getName());
    zinstream.putNextEntry(entry);

    int len;
    while ((len = input.read(data)) > 0) {
        zinstream.write(data, 0, len);
    }
    zinstream.closeEntry();
}
jsonfile.close();
zinstream.close();
path.close();