Swift - 压缩/解压缩

1. 下载SSZipArchive库（新版本可能没有createZipFileAtPath方法）

2. 导入依赖动态库libz

   
   

压缩目录下的所有文件（SSZipArchive.createZipFileAtPath）

@IBAction func Compression(sender: UIButton) {
    let caches = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.CachesDirectory, NSSearchPathDomainMask.UserDomainMask, true).last
    let images = caches?.stringByAppendingString("/images")
    // 创建一个zip文件
    let zipFile = caches?.stringByAppendingString("/images.zip")
    // 把images目录压缩成zipFile文件
    let resule = SSZipArchive.createZipFileAtPath(zipFile, withContentsOfDirectory: images)
    if resule {
        /*********************把压缩文件上传到服务器*******************/
         // 非文件参数
        let params = [
            "username" : "李四"
        ]
        let mimeType = Tool.MIMEType(zipFile!)
        let data = NSData(contentsOfFile: zipFile!)
        Tool.upload(url, fileName: "images.zip", mimeType: mimeType, fileData: data!, params: params) { (response, data, error) -> () in
            // 得到返回的json
            let dict = try! NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableLeaves)
            print(dict)
        }
        /*********************把压缩文件上传到服务器*******************/
    }
}

解压缩从服务器下载的zip文件

@IBAction func Extract(sender: UIButton) {
    // 服务器上zip文件地址
    let url = NSURL(string: "http://localhost:8080/MJServer/resources/videos/videos.zip")
    // 发送请求，下载文件
    let task = NSURLSession.sharedSession().downloadTaskWithURL(url!) { (location, response, error) -> Void in
        // 拿到沙盒caches路径
        let caches = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.CachesDirectory, NSSearchPathDomainMask.UserDomainMask, true).last
        // 解压缩zip文件
        SSZipArchive.unzipFileAtPath(location?.path, toDestination: caches)
    }
    // 开始下载
    task.resume()
}