NSXML 使用 Swift 将损坏的字符串解析为数组

Question

使用 NSXMLParser，在下面的代码中 conditionIconString = conditionIconString + string 将 link 存储到 1 个大字符串中，但我需要它将每个 link 作为字符串存储在 [=14= 中].我不知道该怎么做？

var conditionsIcons = [String]()
var conditionIconString = String()
var weAreInsideAnItem = false

func parser(parser: NSXMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String]) {


            if (elementName as NSString).isEqualToString("icon-link") {
                weAreInsideAnItem = true

            }


        if (elementName as NSString).isEqualToString("conditions-icon") {
            conditionsIcons = [String]()
            conditionsIcons = [""]
        }

 func parser(parser: NSXMLParser, foundCharacters string: String) {


        if weAreInsideAnItem == true {
             if element.isEqualToString("icon-link") {
                    conditionIconString = conditionIconString + string
            }
        }
}

func parser(parser: NSXMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
       if (elementName as NSString).isEqualToString("icon-link") {
            conditionsIcons.append(conditionIconString)
            weAreInsideAnItem = false
       }
        elements.setObject(conditionsIcons, forKey: "conditionIcons")
}

这是我正在解析的XML：http://forecast.weather.gov/MapClick.php?lat=39.557&lon=-79.3542&unit=0&lg=english&FcstType=dwml

<conditions-icon type="forecast-NWS" time-layout="k-p12h-n13-1">
<name>Conditions Icon</name>
<icon-link>
http://forecast.weather.gov/newimages/medium/wind_sct.png
</icon-link>
<icon-link>
http://forecast.weather.gov/DualImage.php?i=nra_sn&j=nsn&ip=20&jp=40
</icon-link>
<icon-link>
http://forecast.weather.gov/DualImage.php?i=sn&j=bkn&ip=20
</icon-link>
<icon-link>
http://forecast.weather.gov/newimages/medium/nsct.png
</icon-link>
<icon-link>
http://forecast.weather.gov/newimages/medium/sct.png
</icon-link>
<icon-link>
http://forecast.weather.gov/newimages/medium/nsct.png
</icon-link>
<icon-link>
http://forecast.weather.gov/newimages/medium/sct.png
</icon-link>
<icon-link>
http://forecast.weather.gov/newimages/medium/nsct.png
</icon-link>
<icon-link>
http://forecast.weather.gov/newimages/medium/bkn.png
</icon-link>
<icon-link>
http://forecast.weather.gov/newimages/medium/nbkn.png
</icon-link>
<icon-link>
http://forecast.weather.gov/newimages/medium/bkn.png
</icon-link>
<icon-link>
http://forecast.weather.gov/newimages/medium/nshra40.png
</icon-link>
<icon-link>
http://forecast.weather.gov/newimages/medium/bkn.png
</icon-link>
</conditions-icon>

Answer 1

问题是 conditionIconString 永远不会重置，它会随着找到的每个 <icon-link> 标签而增长。在开始解析下一个元素之前更新 didEndElement 函数以将此字符串设置回空：

func parser(parser: NSXMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
    if (elementName as NSString).isEqualToString("icon-link") {
        conditionsIcons.append(conditionIconString)

        conditionIconString = String() // THIS IS THE KEY LINE

        weAreInsideAnItem = false
    }
    elements.setObject(conditionsIcons, forKey: "conditionIcons")
}

Answer 2

看来您需要在 parser:didEndElement:namespaceURI:qualifiedName: 中重置 conditionIconString。在 "weAreInsideAnItem = false":

这行之前添加

conditionIconString = String()

NSXML 使用 Swift 将损坏的字符串解析为数组

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