swift写了一个本地缓存

//

//  CacheFunc.swift

//

//  Created by CJW on 16/12/18.

//  Copyright © 2016年 onight. All rights reserved.

//

import Foundation

import UIKit

class CacheFunc: NSObject {

    

    /**

     *  获取沙盒路径

     */

    func cachePath(proName:String)->String

    {

        let cachePath = NSHomeDirectory() + "/Library/Caches/proData/" + proName+"/"

        let FM:NSFileManager = NSFileManager.defaultManager()

        //判断当前路径是否存在

        if !FM.fileExistsAtPath(cachePath, isDirectory: nil)

        {

            do {

                try FM.createDirectoryAtPath(cachePath, withIntermediateDirectories: true, attributes: nil)

            } catch let error as NSError

            {

                print("存储路径错误-->\(error)")

            }

        }

        return cachePath

    }

    //存储缓存

    func saveDataToCache(proName:String,Data:NSData) -> ()

    {

        let pathStr = self.cachePath(proName)+"\(proName).png"

        print("存路径--->\(pathStr)")

        Data.writeToFile(pathStr, atomically: true)

    }

    //取缓存

    func getDataFromCache(proName:String) -> NSData

    {

        let pathStr = self.cachePath(proName)+"\(proName).png"

        print("路径--->\(pathStr)")

        let data:NSData = NSData(contentsOfFile: pathStr)!

        return data

    }

    

    

}