Swift - 使用NSURL进行数据的提交和获取POST与GET

使用Swift进行iOS开发时，不可避免的要进行远程的数据获取和提交。

其数据请求的方式既可能是POST也可能是GET。同不管是POST还是GET又可以分为同步请求和异步请求。

下面通过四个例子来进行演示。

1，使用POST方式提交数据（用户id和分数）

（1）同步请求

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//保存分数 func savescore(score: Int ,userid: String ) { let urlString: = "http://www.hangge.com/" var url: NSURL ! url = (string:urlString) request = NSMutableuRLRequest ( URL :url) body = "score=\(score)&user=\(userid)" //编码POST数据 postData = body.dataUsingEncoding( NSUTF8StringEncoding ) //保用 POST 提交 request. HTTPMethod "POST" HTTPBody = postData //响应对象 response: NSURLResponse ? do{ //发出请求 received: NSData ? = try NSURLConnection .sendSynchronousRequest(request, returningResponse: &response) datastring = Nsstring (data:received!,encoding: ) print (datastring) }catch error as NSError { //打印错误消息 (error.code) (error.description) } }

（2）异步请求

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import UIKit class scoreController : NSObject ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas, NSURLConnectionDataDelegate { //保存分数 ) { "http://www.hangge.com/savescore.php" ! (string:urlString) :url) "score=\(score)&user=\(userid)" //编码POST数据 NSASCIIStringEncoding ) //保用 POST 提交 "POST" = postData conn: ! conn = (request: request,delegate: self ) conn.start() (conn) } connection(connection: ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,didReceiveResponse response: ) ( "请求成功！" ); (response) } ) { "请求成功1！" ); (data:data,monospace!important; min-height:inherit!important">) (datastring) } connectionDidFinishLoading(connection: ) { "请求成功2！" ); } }

2，使用GET方式获取数据（用户id对应的分数）

（1）同步请求

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//获取分数 getscore(user: ){ "http://www.hangge.com/getscore.php?user=\(user)" "GET" //响应对象 ? do{ //发出请求 returningResponse: &response) ) (datastring) { //打印错误消息 (error.code) (error.description) } }

（2）异步请求

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//获取分数 "http://hangge.com/getscore.php?user=\(user)" "GET" ! ) conn.start() (conn) } ) { ); (response) ) { ); ) (datastring) //解析 JSON 数据 do { json : AnyObject ! = try NSJSONSerialization . JSONObjectWithData (data, options: NSJSONReadingOptions AllowFragments ) score = json.objectForKey( "score" ) as ! Int (score) { //打印错误消息 (error.code) (error.description) } } ) { ); } }

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