IOS NSURL基本操作-备

NSURL其实就是我们在浏览器上看到的网站地址，这不就是一个字符串么，为什么还要在写一个NSURL呢，主要是因为网站地址的字符串都比较复杂，包括很多请求参数，这样在请求过程中需要解析出来每个部门，所以封装一个NSURL，操作很方便：

NSURL *url = [NSURL URLWithString:@"http://www.baidu.com/s?tn=baiduhome_pg&bs=NSRUL&f=8&rsv_bp=1&rsv_spt=1&wd=NSurl&inputT=2709"];

    NSLog(@"Scheme: %@", [url scheme]);

    NSLog(@"Host: %@", [url host]);

    NSLog(@"Port: %@", [url port]);

    NSLog(@"Path: %@", [url path]);

    NSLog(@"Relative path: %@", [url relativePath]);

    NSLog(@"Path components as array: %@", [url pathComponents]);

    NSLog(@"Parameter string: %@", [url parameterString]);

    NSLog(@"Query: %@", [url query]);

    NSLog(@"Fragment: %@", [url fragment]);

    NSLog(@"User: %@", [url user]);

    NSLog(@"Password: %@", [url password]);

结果：

2012-08-29 15:52:23.781 NSurl[3560:f803] Scheme: http
2012-08-29 15:52:32.793 NSurl[3560:f803] Host: www.baidu.com
2012-08-29 15:52:39.102 NSurl[3560:f803] Port: (null)
2012-08-29 15:52:42.590 NSurl[3560:f803] Path: /s
2012-08-29 15:52:52.516 NSurl[3560:f803] Relative path: /s
2012-08-29 15:53:05.576 NSurl[3560:f803] Path components as array: (
    "/",
    s
)
2012-08-29 15:53:32.861 NSurl[3560:f803] Parameter string: (null)
2012-08-29 15:53:37.528 NSurl[3560:f803] Query: tn=baiduhome_pg&bs=NSRUL&f=8&rsv_bp=1&rsv_spt=1&wd=NSurl&inputT=2709
2012-08-29 15:53:52.942 NSurl[3560:f803] Fragment: (null)
2012-08-29 15:53:54.539 NSurl[3560:f803] User: (null)
2012-08-29 15:53:57.808 NSurl[3560:f803] Password: (null)
NSURL *url=[NSURL URLWithString:@"http://www.baidu.com?id=1"];
NSString *strLocalHtml = @"file:///Users/amarishuyi/Desktop/My IPhone Life/WebDeveloper/WebPlug-in/ExtEditor/DataPage/KMQT/Ext-HTMLEditor.html";
strLocalHtml = [NSString stringWithFormat:@"%@?Value=%@",strLocalHtml,self.txtUrl.text];
strLocalHtml= [strLocalHtml stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL * url=[NSURL URLWithString:strLocalHtml];
self.filePathString = [self.filePathString stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL fileURLWithPath:self.filePathString];
NSURL *url = [NSURL URLWithString:  @"http://www.baidu.com/s?tn=baiduhome_pg&bs=NSRUL&f=8&rsv_bp=1&rsv_spt=1&wd=NSurl&inputT=2709"];
NSLog(@"Scheme: %@", [url scheme]);
NSLog(@"Host: %@", [url host]);
NSLog(@"Port: %@", [url port]);
NSLog(@"Path: %@", [url path]);
NSLog(@"Relative path: %@", [url relativePath]);
NSLog(@"Path components as array: %@", [url pathComponents]);
NSLog(@"Parameter string: %@", [url parameterString]);
NSLog(@"Query: %@", [url query]);
NSLog(@"Fragment: %@", [url fragment]);
NSLog(@"User: %@", [url user]);
NSLog(@"Password: %@", [url password]);
2012-03-31 18:22:20.904 SmallDemoList[5473:11603] 12131232
2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Scheme: http
2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Host: www.baidu.com
2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Port: (null)
2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Path: /s
2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Relative path: /s
2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Path components as array: (
    "/",
    s
)
2012-03-31 18:22:20.916 SmallDemoList[5473:11603] Parameter string: (null)
2012-03-31 18:22:20.917 SmallDemoList[5473:11603] Query: tn=baiduhome_pg&bs=NSRUL&f=8&rsv_bp=1&rsv_spt=1&wd=NSurl&inputT=2709
2012-03-31 18:22:20.917 SmallDemoList[5473:11603] Fragment: (null)
2012-03-31 18:22:20.917 SmallDemoList[5473:11603] User: (null)
2012-03-31 18:22:20.917 SmallDemoList[5473:11603] Password: (null)