Vic*_*ler 85
有几个很好的HTML解析库使用Swift,Objective-C如下所示:
看看上面发布的四个库中的以下示例,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和CSS选择器):
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和CSS选择器):
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)
}
该ends-with函数是Xpath 2.0的一部分.
SwiftSoup(CSS选择器):
do{
let doc: Document = try SwiftSoup.parse("...")
let links: Elements = try doc.select("a[href]") // a with href
let pngs: Elements = try doc.select("img[src$=.png]")
// img with src ending .png
let masthead: Element? = try doc.select("div.masthead").first()
// div with class=masthead
let resultLinks: Elements? = try doc.select("h3.r > a") // direct a after h3
} catch Exception.Error(let type, let message){
print(message)
} catch {
print("error")
}
Ji(XPath):
let jiDoc = Ji(htmlURL: URL(string: "http://www.apple.com/support")!)
let titleNode = jiDoc?.xPath("//head/title")?.first
print("title: \(titleNode?.content)") // title: Optional("Official Apple Support")
我希望这可以帮助你.
试试SwiftSoup，一个 jsoup 到 Swift 的端口。
let html: String = "<a id=1 href='?foo=bar&mid<=true'>One</a> <a id=2 href='?foo=bar<qux&lg=1'>Two</a>";
let els: Elements = try SwiftSoup.parse(html).select("a");
for element: Element in els.array(){
print(try element.attr("href"))
}
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