打开文件时出现NSXMLDocument错误

Question

我正在尝试将文件读入NSXMLDocument.这是我的代码:

NSString *urlString = [@"~/Library/Preferences/Quark/QuarkXPress 8/OutputStyles.xml" stringByExpandingTildeInPath];
urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL URLWithString:urlString];

NSError *error = nil;

NSXMLDocument *doc = [[NSXMLDocument alloc] initWithContentsOfURL:url options:0 error:&error];
NSLog(@"%@", error);
NSLog(@"%@", doc);

但是,在控制台我得到:

2011-04-19 07:41:09.914 XMLTest[1409:a0f] Error Domain=NSURLErrorDomain Code=-1014 UserInfo=0x1001289d0 "zero byte resource"
2011-04-19 07:41:09.915 XMLTest[1409:a0f] (null)

关于什么可能是错的任何建议？我有那里的文件..我检查了100次...谢谢.

编辑:当我尝试使用[stringwithcontentofurl encoding error]方法在NSString中读取此内容时,我收到此错误:

Error Domain = NSCocoaErrorDomain Code = 262 UserInfo = 0x1006281c0"无法打开文件,因为不支持指定的URL类型." 基础错误=(错误域= NSURLErrorDomain代码= -1002 UserInfo = 0x1006280d0"不支持的URL"基础错误=(错误域= kCFErrorDomainCFNetwork代码= -1002 UserInfo = 0x100627d50"不支持的URL"))

Answer 1

file://调用stringByExpandingTildeInPath之后的前置:)