Swift网络爬虫

 NSLog("开始获取url")
        var URLARR = [String]()
        var count = 200
        
        
        for i in 1...count/20{
            println("\(i)page")
            let urlString = "http://b2b.huangye88.com/fuzhou/tuliao/pn\(i)"
            let request = NSURL(string: urlString)
            let data = NSData(contentsOfURL: request!)
            let dataString = NSString(data: data!, encoding: NSUTF8StringEncoding)!
            let bigScanner = NSScanner(string: dataString as String)
            var bigString:NSString?
            while !bigScanner.atEnd{
                bigScanner.scanUpToString("<dt><h4><a href=\"", intoString: nil)
                bigScanner.scanUpToString("\" ", intoString: &bigString)
                let string = bigString!.stringByReplacingOccurrencesOfString("<dt><h4><a href=\"", withString: "")
                URLARR.append(string)
            }
        }
        NSLog("获取url结束")

        var INFOS = ""
        
        NSLog("开始获取信息")
        let queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
        let group = dispatch_group_create()
        if URLARR.count >= count{

            for num in 0..<20{
                dispatch_group_async(group, queue, { () -> Void in
                    for i in num*(count/20)..<(num+1)*(count/20){
                        let request = NSURL(string: URLARR[i])
                        let data = NSData(contentsOfURL: request!)
                        if data != nil{
                            let dataString = NSString(data: data!, encoding: NSUTF8StringEncoding)!
                            //先截取信息体
                            let infoScanner = NSScanner(string: dataString as String)
                            var infoStr:NSString?
                            infoScanner.scanUpToString("<div class=\"Contact\">", intoString: nil)
                            infoScanner.scanUpToString("</div><!--Contact-->", intoString: &infoStr)
                            
                            var tempInfo = ""
                            if infoStr != nil{
                                //公司名
                                var componyScanner = NSScanner(string: infoStr! as String)
                                var componyStr:NSString?
                                componyScanner.scanUpToString("公司名称：", intoString: nil)
                                componyScanner.scanUpToString("</a>", intoString: &componyStr)
                                
                                var componyScannerA = NSScanner(string:componyStr! as String)
                                var componyScannerAStr:NSString?
                                componyScannerA.scanUpToString("title=\"", intoString: nil)
                                componyScannerA.scanUpToString("\">", intoString: &componyScannerAStr)
                                let COMPONY = componyScannerAStr!.stringByReplacingOccurrencesOfString("title=\"", withString: "")
                                tempInfo += "公司名称：" + COMPONY + "\n"
                                //联系电话
                                var phoneScanner = NSScanner(string: infoStr! as String)
                                var phoneStr:NSString?
                                phoneScanner.scanUpToString("联系人手机：", intoString: nil)
                                phoneScanner.scanUpToString("/span>", intoString: &phoneStr)
                                
                                if phoneStr == nil{
                                    var phoneScannerB = NSScanner(string: infoStr! as String)
                                    var phoneStrB:NSString?
                                    phoneScannerB.scanUpToString("公司电话：", intoString: nil)
                                    phoneScannerB.scanUpToString("td>", intoString: &phoneStrB)
                                    
                                    if phoneStrB == nil {
                                        tempInfo += "公司电话：" + "无" + "\n"
                                    }else{
                                        var phoneScannerA = NSScanner(string: phoneStrB! as String)
                                        var phoneStrA:NSString?
                                        phoneScannerA.scanUpToString("boldred\">", intoString: nil)
                                        phoneScannerA.scanUpToString("<", intoString: &phoneStrA)
                                        let PHONE = phoneStrA!.stringByReplacingOccurrencesOfString("boldred\">", withString: "")
                                        tempInfo += "公司电话：" + PHONE + "\n"
                                    }
                                   
                                }else{
                                    var phoneScannerA = NSScanner(string: phoneStr! as String)
                                    var phoneStrA:NSString?
                                    phoneScannerA.scanUpToString("boldred\">", intoString: nil)
                                    phoneScannerA.scanUpToString("<", intoString: &phoneStrA)
                                    let PHONE = phoneStrA!.stringByReplacingOccurrencesOfString("boldred\">", withString: "")
                                    tempInfo += "联系人手机：" + PHONE + "\n"
                                }
                                
                                //联系人名字
                                var nameScanner = NSScanner(string: infoStr! as String)
                                var nameStr:NSString?
                                nameScanner.scanUpToString("联系人：", intoString: nil)
                                nameScanner.scanUpToString("/span>", intoString: &nameStr)
                                if nameStr == nil {
                                    tempInfo += "联系人：" + "无" + "\n\n"
                                }else{
                                    var nameScannerA = NSScanner(string: nameStr! as String)
                                    var nameStrA:NSString?
                                    nameScannerA.scanUpToString("span>", intoString: nil)
                                    nameScannerA.scanUpToString("<", intoString: &nameStrA)
                                    let NAME = nameStrA!.stringByReplacingOccurrencesOfString("span>", withString: "")
                                    tempInfo += "联系人：" + NAME + "\n\n"
                                }
                                
                                INFOS += tempInfo
                                println(tempInfo)
                            }
                            
                        }
                        
                    }
                })
            }
            dispatch_group_notify(group, queue) { () -> Void in
                NSLog("获取信息结束")
                NSLog("开始写入文件")
                //文件写入jinrong
                let file = "Infos.txt"
                if let dirs : [String] = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.AllDomainsMask, true) as? [String] {
                    let dir = dirs[0]
                    let path = dir.stringByAppendingPathComponent(file);
                    println(path)
                    INFOS.writeToFile(path, atomically: false, encoding: NSUTF8StringEncoding, error: nil);
                    
                }
                NSLog("写入文件结束")
            }
            
        }else{
            println("URLARR.count->\(URLARR.count)")
        }