Objective-C XML Parse

Tags:

簡中版

要 Parse xml 之前，要先下載別人寫好的 XMLParser Library，這裡我使用的是「xml parse」，使用方式還算簡單，這裡我先定義一個 XML String ，然後用 dictionaryForXMLString 將 XML 讀進來，範例如下。

xml parse

#import "xmlReader.h";
 
NSString *xmlContent = [NSString stringWithFormat:@"<?xml version="1.0" encoding="UTF-8" ?>"
                        "<xml>"
                        "<title>IOS Tutorial</title>"
                        "<desc>IOS desc</desc>"
                        "</xml>"];
NSDictionary *dics=[[NSDictionary alloc] 
     initWithDictionary:[XMLReader dictionaryForXMLString:xmlContent error:nil]
];
    
NSLog(@"dics is %@",dics);

將 dics 物件輸出的結果如下，可以清楚的看到其資料結構。

result

dics is {
    xml =     {
        desc =         {
            text = "IOS desc";
        };
        title =         {
            text = "IOS Tutorial";
        };
    };
}

上述的範例，只是直接將 NSDictionary 輸出至螢幕，接下來我要取得 titile 的這個 tag 的值。

Example

NSArray *tableDicsArray=[dics valueForKey:@"xml"];        
NSLog(@"data =  %@", [[tableDicsArray valueForKey:@"title"] valueForKey:@"text"]);
//output: IOS Tutorial

接著來試一下 Array 的處理，假如我的 XML 格式包含多項的 List，我們一樣可以用 Array[0], Array[1] 的方式取得資料。

XML Array

NSString *xmlContent = [NSString stringWithFormat:@"<?xml version="1.0" encoding="UTF-8" ?>"
                            "<xml>"
                            "<item><title>IOS Tutorial</title>"
                            "<desc>IOS desc</desc></item>"
                            "<item><title>IOS Tutorial2</title>"
                            "<desc>IOS desc2</desc></item>"
                            "</xml>"];
NSDictionary *dics=[[NSDictionary alloc]initWithDictionary:[XMLReader dictionaryForXMLString:xmlContent error:nil]];
    
NSArray *tableDicsArray=[[dics valueForKey:@"xml"] valueForKey:@"item"];
    
NSLog(@"data =  %@", [[tableDicsArray[1] valueForKey:@"title"] valueForKey:@"text"]);

RSS Content Parse

這是一個簡單的 RSS 格式，與 Parse 範例。

Example

NSString *xmlContent = [NSString stringWithFormat:@"<?xml version="1.0" encoding="UTF-8" ?>"
    "<rss version="2.0">"
    "<title>Puritys Program Blog</title>"
    "<channel>"
    "<title>Puritys Program Blog</title>"
    "<link>http://www.puritys.me/rss/blog</link>"
    "<description></description>"
    "<language>zh-tw</language>"
    "<pubDate>Sat, 22 Mar 2014 23:10:03 +0800</pubDate>"
    "<copyright>www.ewebsite.com.tw</copyright>"
    "<generator>Puritys</generator>"
    "<item>"
    "<title>Javascript Hoisting 與 Closure</title>"
    "<link>http://www.puritys.me/docs-blog/article-242</link>"
    "<description>content</description>"
    "<pubDate>Sat, 22 Mar 2014 00:23:18 +0800</pubDate>"
    "<guid></guid>"
    "</item>"
    "<item>"
    "<title>PHP 判斷是否為 Command Line 的方式</title>"
    "<link>http://www.puritys.me/docs-blog/article-241</link>"
    "<description>content</description>"
    "<pubDate>Sat, 22 Mar 2014 00:23:18 +0800</pubDate>"
    "<guid></guid>"
    "</item>"
    "</channel>"
    "</rss>"];
    
    NSDictionary *dics=[[NSDictionary alloc]initWithDictionary:[XMLReader dictionaryForXMLString:xmlContent error:nil]];
    
    NSArray *tableDicsArray=[[[dics valueForKey:@"rss"] valueForKey:@"channel"] valueForKey:@"item"];

Objective-C XML Parse

RSS Content Parse

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