iOS開發——網路Swift篇&NSURL進行資料請求（POST與GET）

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NSURL進行資料請求（POST與GET） 使用Swift進行iOS開發時，不可避免的要進行遠端資料擷取和提交。其資料請求的方式既可能是POST也可能是GET。同不管是POST還是GET又可以分為同步請求和非同步請求。下面通過四個例子來進行示範。 1，使用POST方式提交資料（使用者id和分數）（1）同步請求

 1 //儲存分數 2 func saveScore(score:Int, userid:String) 3 { 4     let urlString:String = "http://hangge.com/" 5     var url:NSURL! 6     url = NSURL(string:urlString) 7     var request = NSMutableURLRequest(URL:url) 8     var body = "score=\(score)&user=\(userid)" 9     //編碼POST資料10     var postData = body.dataUsingEncoding(NSUTF8StringEncoding)11     //保用 POST 提交12     request.HTTPMethod = "POST"13     request.HTTPBody = postData14      15     //響應對象16     var response:NSURLResponse?17     //錯誤對象18     var error:NSError?19      20     //發出請求21     var received:NSData? = NSURLConnection.sendSynchronousRequest(request,22         returningResponse: &response, error: &error)23      24     if(error != nil){25         println(error?.code)26         println(error?.description)27     }else{28         var datastring = NSString(data:received!, encoding: NSUTF8StringEncoding)29         println(datastring)30     }31 }

 

（2）非同步請求

 1 import UIKit 2   3 class ScoreController:NSObject, NSURLConnectionDataDelegate 4 { 5     //儲存分數 6     func saveScore(score:Int, userid:String) 7     { 8         let urlString:String = "http://hangge.com/savescore.php" 9         var url:NSURL!10         url = NSURL(string:urlString)11         var request = NSMutableURLRequest(URL:url)12         var body = "score=\(score)&user=\(userid)"13         //編碼POST資料14         var postData = body.dataUsingEncoding(NSASCIIStringEncoding)15         //保用 POST 提交16         request.HTTPMethod = "POST"17         request.HTTPBody = postData18         var conn:NSURLConnection!19         conn = NSURLConnection(request: request,delegate: self)20         conn.start()21         println(conn)22     }23         24     func connection(connection: NSURLConnection!, didReceiveResponse response: NSURLResponse!)25     {26         println("請求成功！");27         println(response)28     }29      30     func connection(connection: NSURLConnection!, didReceiveData data: NSData!)31     {32         println("請求成功1！");33         var datastring = NSString(data:data, encoding: NSUTF8StringEncoding)34         println(datastring)35     }36      37     func connectionDidFinishLoading(connection: NSURLConnection!)38     {39         println("請求成功2！");40     }41 }

 

2，使用GET方式擷取資料（使用者id對應的分數）（1）同步請求

 1 //擷取分數 2 func getScore(user:String){ 3       4     let urlString:String="http://hangge.com/getscore.php?user=\(user)" 5     var url:NSURL! 6     url = NSURL(string:urlString) 7     var request = NSMutableURLRequest(URL:url) 8     request.HTTPMethod = "GET" 9      10     //響應對象11     var response:NSURLResponse?12     //錯誤對象13     var error:NSError?14      15     //發出請求16     var received:NSData? = NSURLConnection.sendSynchronousRequest(request,17         returningResponse: &response, error: &error)18      19     if(error != nil){20         println(error?.code)21         println(error?.description)22     }else{23         var datastring = NSString(data:received!, encoding: NSUTF8StringEncoding)24         println(datastring)25     }26 }

 

（2）非同步請求

 1 import UIKit 2   3 class ScoreController:NSObject, NSURLConnectionDataDelegate 4 {     5     //擷取分數 6     func getScore(user:String) 7     { 8         let urlString:String="http://hangge.com/getscore.php?user=\(user)" 9         var url:NSURL!10         url = NSURL(string:urlString)11         var request = NSMutableURLRequest(URL:url)12          13         var body = "user=\(user)"14         request.HTTPMethod = "GET"15         var conn:NSURLConnection!16         conn = NSURLConnection(request: request,delegate: self)17         conn.start()18         println(conn)19     }20      21     func connection(connection: NSURLConnection!, didReceiveResponse response: NSURLResponse!)22     {23         println("請求成功！");24         println(response)25     }26      27     func connection(connection: NSURLConnection!, didReceiveData data: NSData!)28     {29         println("請求成功1！");30         var datastring = NSString(data:data, encoding: NSUTF8StringEncoding)31         println(datastring)32         //解析 JSON 資料33         var json : AnyObject! = NSJSONSerialization.JSONObjectWithData(data,34             options:NSJSONReadingOptions.AllowFragments,error:nil)35          36         var score = json.objectForKey("score") as Int37         println(score)38     }39      40     func connectionDidFinishLoading(connection: NSURLConnection!)41     {42         println("請求成功2！");43     }44 }

 

 

iOS開發——網路Swift篇&NSURL進行資料請求（POST與GET）