0

我正在使用 raptureXML 从我的 XML<forecast .../>标签中提取数据。

这是 XML

<?xml version="1.0" ?>
<weatherdata>
<weather weatherlocationname="Chicago, IL">

<forecast low="67" high="86" skycodeday="34" skytextday="Mostly Sunny" date="2012-08-27" day="Monday" shortday="Mon" precip="0" />

<forecast low="66" high="82" skycodeday="34" skytextday="Mostly Sunny" date="2012-08-28" day="Tuesday" shortday="Tue" precip="0" />

<forecast low="66" high="82" skycodeday="34" skytextday="Mostly Sunny" date="2012-08-29" day="Wednesday" shortday="Wed" precip="0" />

<forecast low="68" high="88" skycodeday="32" skytextday="Sunny (Clear)" date="2012-08-30" day="Thursday" shortday="Thu" precip="0" />

<forecast low="70" high="90" skycodeday="34" skytextday="Mostly Sunny" date="2012-08-31" day="Friday" shortday="Fri" precip="0" />

<toolbar timewindow="60" minversion="1.0.1965.0" />
</weather>
</weatherdata>

我将此代码用于 raptureXML

RXMLElement *rootXML = [RXMLElement elementFromXMLString:XML encoding:NSUTF8StringEncoding];

[rootXML iterate:@"forecast" usingBlock:^(RXMLElement *element) 
    {
        NSString *high = [element attribute:@"low"];
        NSLog(@"high: %@", high);
    }];

    NSArray *forecast = [rootXML children:@"forecast"];
    NSLog(@"[forecast count]: %d", [forecast count]);

很直接对吧？但问题是它没有找到任何预测标签，即我什么也没得到，NSLog(@"high: %@", high);并且 [forecast count]为零。

我错过了什么？

4

1 回答 1

2

我没有使用过 RaptureXML，但看起来你错过了一层。rootXML可能是weatherdata它没有forecast孩子，因为它唯一的孩子是weather有forecast孩子的。尝试添加：

RXMLElement *weather = [rootXML child:@"weather"];

然后使用weather其余代码代替rootXML.

像这样：

RXMLElement *rootXML = [RXMLElement elementFromXMLString:XML encoding:NSUTF8StringEncoding];

RXMLElement *weather = [rootXML child:@"weather"];

[weather iterate:@"forecast" usingBlock:^(RXMLElement *element) 
{
    NSString *high = [element attribute:@"low"];
    NSLog(@"high: %@", high);
}];

NSArray *forecast = [weather children:@"forecast"];
NSLog(@"[forecast count]: %d", [forecast count]);
于 2012-08-27T21:59:23.963 回答