swift文件操作

需要用到swift存儲文件等操作，網上方法五花八門，搞來搞去，亂七八糟，很亂，於是，理了一下方法。

https://iuwe.cc/index.php/archives/79/

僅僅寫我用到的幾個方法，更多的方法不做討論

首先我用 just庫從服務器get到一個文件，我需要將它保存下來。

let manager = FileManager.default
        let baseUrl = NSHomeDirectory() + "/Documents/Amusic/" + self.filname
        let exist = manager.fileExists(atPath: baseUrl)
//將 文件地址存到 變量 exist中
        if !exist{ //如果文件夾不存在，創建一個異常捕捉語句，創建文件夾
            do {
                try manager.createDirectory(atPath: baseUrl, withIntermediateDirectories: true, attributes: nil)
                print("creat baseUrl Successful")
            }
            catch{
                print("something wrong")
            }
        }
  //創建 文件夾
        let filePath = baseUrl + "/" + self.filname + ".zip"
        let pathUrl:URL = URL.init(fileURLWithPath: filePath)
//將路徑轉換為URl形式
        do{
            try retfil.write(to: pathUrl) //將data直接寫到文件里面
            print("write successfully path:\(filePath)")
        }catch{
            print("writefile error path:\(filePath)")
        }

　　

2，刪除某處文件

let manager = FileManager.default
        let folder = NSHomeDirectory() + "/Documents/Amusic" //要刪除的文件夾
        let files:[String]? = manager.subpaths(atPath: folder) //搜索文件夾下面所有文件
        for file in files!{ //遍歷文件夾下面的所有文件並刪除
            do{
                try manager.removeItem(atPath: folder + "/\(file)")//刪除
                print("清理成功")
            }catch{
                print("\(file) 刪除失敗")
            }
        }

　　3，解壓zip壓縮包，用到了zip庫

            let manager = FileManager.default
            let baseUrl = NSHomeDirectory() + "/Documents/Amusic/" + self.filname
            let filePath = baseUrl + "/" + self.filname + ".zip"
            let pathUrl:URL = URL.init(fileURLWithPath: filePath)
            let unzipUrl = URL.init(fileURLWithPath: baseUrl + "/out")
do {
            try Zip.unzipFile(pathUrl, destination: unzipUrl, overwrite: true, password: "passwd",progress: {
                (Progress) ->() in
                print("extra:\(Progress)")
            })
        }
        catch {
          print("Something went wrong")
        }