有人可以告诉我如何在i-c的c-objective中使用XPath查询中的变量的text函数。我需要xml中提供的Engineering Library的信息
http://www.sis.pitt.edu/~arazeez/Librarydata.xml
NSString *libName = @"Engineering Library";
NSMutableString *xpathquery = [[NSMutableString alloc] init];
[xpathquery appendString:@"//Library[LibraryName/text() = '"];
[xpathquery appendString:libName];
[xpathquery appendString:@"']/../Hours/TermOrHolidays"];
resultNodes = [rssParser nodesForXPath:xpathquery error:nil];
或其他变体
NSString *string1 = @"//LibraryName[text() = '";
NSString *string2 = @"']/../Hours/TermOrHolidays";
NSString *newString; NSString *newString1;
newString = [string1 stringByAppendingString:libName];
newString1 = [newString stringByAppendingString:string2];
NSLog(newString1);
//correct one below //resultNodes = [rssParser nodesForXPath:@"//LibraryName[text()= 'Engineering Library']/../Hours/TermOrHolidays" error:nil];
resultNodes = [rssParser nodeForXPath:newString1 error:nil];
如果这种方法不对,有人可以告诉我如何获取工程库的数据。我不想直接使用这个词,但想通过变量使用它。
由于
答案 0 :(得分:0)
如何使用这个xpath:
//Library[@name='Engineering Library']/Hours/TermOrHolidays
或者这个:
//Library[LibraryName='Engineering Library']/Hours/TermOrHolidays
答案 1 :(得分:0)
使用[NSString stringWithFormat:@“// LibraryName [text()='%@'] /../ Hours / TermOrHolidays”,someVariable]
构造字符串可能更容易然后只要xpath查询没问题就行了。