一、NSString转NSURL

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    //NSString转换为NSURL

    NSString *string = @"http://moeghost.cn/nsstring和nsurl相互转换/";

    

    string = [string stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; //处理中文字符避免转为NSURL时值为nil

    

    NSURL *url = [NSURL URLWithString:string];

    

    NSLog(@"%@",url);

二、NSURL转NSString

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//NSURL转换为NSString

    NSString *theStr = @"http://moeghost.cn/nsstring%E5%92%8Cnsurl%E7%9B%B8%E4%BA%92%E8%BD%AC%E6%8D%A2/";

    

    NSURL * theURL = [NSURL URLWithString:theStr];

    

    NSString * str = [theURL.absoluteString stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];//真正得到中文字符的处理。

    

     NSLog(@"%@",str);