ZipOutputStream转InputStream

可以使用ByteArrayOutputStream来将ZipOutputStream的内容存储，并且通过ByteArrayInputStream来返回InputStream对象。具体实现代码如下：

public static InputStream zipOutputStreamToInputStream(ZipOutputStream zipOutputStream) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    byte[] buffer = new byte[1024];
    int len;
    while ((len = zipOutputStream.read(buffer)) > 0) {
        baos.write(buffer, 0, len);
    }
    zipOutputStream.close();
    return new ByteArrayInputStream(baos.toByteArray());    
}