目标 c 将特殊 URL 转换为 NSURL答案

【问题标题】：objective c convert special URL to NSURL目标 c 将特殊 URL 转换为 NSURL
【发布时间】：2017-03-08 10:49:51
【问题描述】：

我有一个这样的URL，但我无法将其转换为NSUrl。

  NSString * mURL = @"http://cl3.webterren.com/1.gif?z=7&a=157ffb99379&b=%u5149%u660E%u7F51_%u65B0%u95FB%u89C6%u91CE%u3001%u6587%u5316%u89C6%u89D2%u3001%u601D%u60F3%u6DF1%u5EA6%u3001%u7406%u8BBA%u9AD8%u5EA6&B=UTF-8&c=http%3A//gmw.cn/%3F_wdxid%3D000000000000000000000000000000000000000000%26_wdc%3D0%26_wdt%3D012%26&d=&e=0&f=0&H=gmw.cn&E=0&r=6c4a9d9057c8bcef&s=0&t=0&u=1&i=zh-tw&j=0&k=320x568&l=32&m=&n=&o=8";
  NSString *pathComponent = [mURL stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
  NSURL* uri = [NSURL URLWithString:pathComponent];
  NSLog(@"uri host = %@", uri.host);
  NSLog(@"uri path = %@", uri.path);

而且，主机和路径都是（空）。我该如何解决这个问题？

【问题讨论】：

host 和 path 的代码在哪里？
对不起，我刚刚修改了它。
第 3 行不正确。你不能像那样创建 NSURL。你的意思是：NSURL URLWithString:

标签： ios objective-c url nsstring nsurl

【解决方案1】：

请检查下面的代码，它正在工作，

NSString * mURL = @"http://cl3.webterren.com/1.gif?z=7&a=157ffb99379&b=%u5149%u660E%u7F51_%u65B0%u95FB%u89C6%u91CE%u3001%u6587%u5316%u89C6%u89D2%u3001%u601D%u60F3%u6DF1%u5EA6%u3001%u7406%u8BBA%u9AD8%u5EA6&B=UTF-8&c=http%3A//gmw.cn/%3F_wdxid%3D000000000000000000000000000000000000000000%26_wdc%3D0%26_wdt%3D012%26&d=&e=0&f=0&H=gmw.cn&E=0&r=6c4a9d9057c8bcef&s=0&t=0&u=1&i=zh-tw&j=0&k=320x568&l=32&m=&n=&o=8";
NSString * webStringURL = [mURL stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLFragmentAllowedCharacterSet]];
NSURL* url = [NSURL URLWithString:webStringURL];
NSLog(@"uri host = %@", url.host);
NSLog(@"uri path = %@", url.path);

【讨论】：

【解决方案2】：

检查一下

NSString * mURL = @"http://cl3.webterren.com/1.gif?z=7&a=157ffb99379&b=%u5149%u660E%u7F51_%u65B0%u95FB%u89C6%u91CE%u3001%u6587%u5316%u89C6%u89D2%u3001%u601D%u60F3%u6DF1%u5EA6%u3001%u7406%u8BBA%u9AD8%u5EA6&B=UTF-8&c=http%3A//gmw.cn/%3F_wdxid%3D000000000000000000000000000000000000000000%26_wdc%3D0%26_wdt%3D012%26&d=&e=0&f=0&H=gmw.cn&E=0&r=6c4a9d9057c8bcef&s=0&t=0&u=1&i=zh-tw&j=0&k=320x568&l=32&m=&n=&o=8";
NSURL *pathComponent = [NSURL URLWithString:[mURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSLog(@"uri host = %@", pathComponent.host);
NSLog(@"uri path = %@", pathComponent.path);

【讨论】：

【解决方案3】：

在 Swift 3 中：

let mURL = "http://cl3.webterren.com/1.gif?z=7&a=157ffb99379&b=%u5149%u660E%u7F51_%u65B0%u95FB%u89C6%u91CE%u3001%u6587%u5316%u89C6%u89D2%u3001%u601D%u60F3%u6DF1%u5EA6%u3001%u7406%u8BBA%u9AD8%u5EA6&B=UTF-8&c=http%3A//gmw.cn/%3F_wdxid%3D000000000000000000000000000000000000000000%26_wdc%3D0%26_wdt%3D012%26&d=&e=0&f=0&H=gmw.cn&E=0&r=6c4a9d9057c8bcef&s=0&t=0&u=1&i=zh-tw&j=0&k=320x568&l=32&m=&n=&o=8";
    if let webStringURL = mURL.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlFragmentAllowed),
        let url = NSURL(string: webStringURL) {
        debugPrint("uri host = \(url.host!)")
        debugPrint("uri path = \(url.path!)")
    }

【讨论】：