解析網站的URL並訪問目標中的信息c

Question

我想在應用程序中顯示亞馬遜的內容，如書籍。該數據需要從亞馬遜網址（http://www.amazon.com/gp/bestsellers/2013/books/ref=zg_bs_tab_t_bsar）

需要提取請建議如何解析來自此網址的數據並檢索所有書籍details.I嘗試觸摸xml，但它沒有奏效。

With Touch XML:- 
    NSError *err=nil; 
    NSURL *urlll=[NSURL URLWithString:@"http://www.amazon.com/gp/bestsellers/2013/books/ref=zg_bs_tab_t_bsar"]; 
    //Access document 
    CXMLDocument *parserDoc = [[CXMLDocument alloc] initWithContentsOfURL:urlll options:0 error:&err]; 
     
    //Access root element and access children in heirarchy 
    CXMLElement *root = [parserDoc rootElement]; 
    NSArray *places = [[[root children] objectAtIndex:0] children]; 
    NSLog(@"%@",places); 

請幫忙。 在此先感謝。

Answer 1

網站抓取比解析xml更復雜一點。檢查出this tutorial開始。

Answer 2

這個Link必須像XML或JSON文件，所以你可以解析信息。 XML的

例如：

<?xml version="1.0"?> 
<catalog> 
    <book id="bk101"> 
     <author>Gambardella, Matthew</author> 
     <title>XML Developer's Guide</title> 
     <genre>Computer</genre> 
     <price>44.95</price> 
     <publish_date>2000-10-01</publish_date> 
     <description>An in-depth look at creating applications 
     with XML.</description> 
    </book> 
    <book id="bk102"> 
     <author>Ralls, Kim</author> 
     <title>Midnight Rain</title> 
     <genre>Fantasy</genre> 
     <price>5.95</price> 
     <publish_date>2000-12-16</publish_date> 
     <description>A former architect battles corporate zombies, 
     an evil sorceress, and her own childhood to become queen 
     of the world.</description> 
    </book> 
    <book id="bk103"> 
     <author>Corets, Eva</author> 
     <title>Maeve Ascendant</title> 
     <genre>Fantasy</genre> 
     <price>5.95</price> 
     <publish_date>2000-11-17</publish_date> 
     <description>After the collapse of a nanotechnology 
     society in England, the young survivors lay the 
     foundation for a new society.</description> 
    </book> 
    <book id="bk104"> 
     <author>Corets, Eva</author> 
     <title>Oberon's Legacy</title> 
     <genre>Fantasy</genre> 
     <price>5.95</price> 
     <publish_date>2001-03-10</publish_date> 
     <description>In post-apocalypse England, the mysterious 
     agent known only as Oberon helps to create a new life 
     for the inhabitants of London. Sequel to Maeve 
     Ascendant.</description> 
    </book> 
    <book id="bk105"> 
     <author>Corets, Eva</author> 
     <title>The Sundered Grail</title> 
     <genre>Fantasy</genre> 
     <price>5.95</price> 
     <publish_date>2001-09-10</publish_date> 
     <description>The two daughters of Maeve, half-sisters, 
     battle one another for control of England. Sequel to 
     Oberon's Legacy.</description> 
    </book> 
    <book id="bk106"> 
     <author>Randall, Cynthia</author> 
     <title>Lover Birds</title> 
     <genre>Romance</genre> 
     <price>4.95</price> 
     <publish_date>2000-09-02</publish_date> 
     <description>When Carla meets Paul at an ornithology 
     conference, tempers fly as feathers get ruffled.</description> 
    </book> 
    <book id="bk107"> 
     <author>Thurman, Paula</author> 
     <title>Splish Splash</title> 
     <genre>Romance</genre> 
     <price>4.95</price> 
     <publish_date>2000-11-02</publish_date> 
     <description>A deep sea diver finds true love twenty 
     thousand leagues beneath the sea.</description> 
    </book> 
    <book id="bk108"> 
     <author>Knorr, Stefan</author> 
     <title>Creepy Crawlies</title> 
     <genre>Horror</genre> 
     <price>4.95</price> 
     <publish_date>2000-12-06</publish_date> 
     <description>An anthology of horror stories about roaches, 
     centipedes, scorpions and other insects.</description> 
    </book> 
    <book id="bk109"> 
     <author>Kress, Peter</author> 
     <title>Paradox Lost</title> 
     <genre>Science Fiction</genre> 
     <price>6.95</price> 
     <publish_date>2000-11-02</publish_date> 
     <description>After an inadvertant trip through a Heisenberg 
     Uncertainty Device, James Salway discovers the problems 
     of being quantum.</description> 
    </book> 
    <book id="bk110"> 
     <author>O'Brien, Tim</author> 
     <title>Microsoft .NET: The Programming Bible</title> 
     <genre>Computer</genre> 
     <price>36.95</price> 
     <publish_date>2000-12-09</publish_date> 
     <description>Microsoft's .NET initiative is explored in 
     detail in this deep programmer's reference.</description> 
    </book> 
    <book id="bk111"> 
     <author>O'Brien, Tim</author> 
     <title>MSXML3: A Comprehensive Guide</title> 
     <genre>Computer</genre> 
     <price>36.95</price> 
     <publish_date>2000-12-01</publish_date> 
     <description>The Microsoft MSXML3 parser is covered in 
     detail, with attention to XML DOM interfaces, XSLT processing, 
     SAX and more.</description> 
    </book> 
    <book id="bk112"> 
     <author>Galos, Mike</author> 
     <title>Visual Studio 7: A Comprehensive Guide</title> 
     <genre>Computer</genre> 
     <price>49.95</price> 
     <publish_date>2001-04-16</publish_date> 
     <description>Microsoft Visual Studio 7 is explored in depth, 
     looking at how Visual Basic, Visual C++, C#, and ASP+ are 
     integrated into a comprehensive development 
     environment.</description> 
    </book> 
</catalog>