我是一个Swift新手我需要像Swift iOS项目中的Python的BeautifulSoup这样的东西。确切地说，我需要得到< a>以“.txt”结尾。我应该采取什么步骤？
有几个很好的HTML解析库，使用Swift和Objective-C，如下所示：
> hpple@H_404_6@> NDHpple@H_404_6@> Kanna( old Swift-HTML-Parser)@H_404_6@> Fuzi
看看下面的例子，在上面发布的四个图书馆里，主要使用XPath 2.0进行解析：
hpple:
let data = NSData(contentsOfFile: path)
let doc = TFHpple(HTMLData: data)
if let elements = doc.searchWithXPathQuery("//a/@href[ends-with(.,'.txt')]") as? [TFHppleElement] {
for element in elements {
println(element.content)
}
}
NDHpple:
let data = NSData(contentsOfFile: path)!
let html = NSString(data: data,encoding: NSUTF8StringEncoding)!
let doc = NDHpple(HTMLData: html)
if let elements = doc.searchWithXPathQuery("//a/@href[ends-with(.,'.txt')]") {
for element in elements {
println(element.children?.first?.content)
}
}
Kanna (Xpath and CSS Selectors):
let html = "<html><head></head><body><ul><li><input type='image' name='input1' value='string1value' class='abc' /></li><li><input type='image' name='input2' value='string2value' class='def' /></li></ul><span class='spantext'><b>Hello World 1</b></span><span class='spantext'><b>Hello World 2</b></span><a href='example.com'>example(English)</a><a href='example.co.jp'>example(JP)</a></body>"
if let doc = Kanna.HTML(html: html,encoding: NSUTF8StringEncoding) {
var bodyNode = doc.body
if let inputNodes = bodyNode?.xpath("//a/@href[ends-with(.,'.txt')]") {
for node in inputNodes {
println(node.contents)
}
}
}
Fuzi (Xpath and CSS Selectors):
let html = "<html><head></head><body><ul><li><input type='image' name='input1' value='string1value' class='abc' /></li><li><input type='image' name='input2' value='string2value' class='def' /></li></ul><span class='spantext'><b>Hello World 1</b></span><span class='spantext'><b>Hello World 2</b></span><a href='example.com'>example(English)</a><a href='example.co.jp'>example(JP)</a></body>"
do {
// if encoding is omitted,it defaults to NSUTF8StringEncoding
let doc = try HTMLDocument(string: html,encoding: NSUTF8StringEncoding)
// XPath queries
for anchor in doc.xpath("//a/@href[ends-with(.,'.txt')]") {
print(anchor.stringValue)
}
} catch let error {
print(error)
}
我希望这能帮助你。
