POST 請求的 forHTTPHeaderField

Response Headers(從伺服器得到的回覆的頭)

Common non-standard response headers(從伺服器得到的非標準回覆的頭)

請寫以下代碼:

列印信息:

2014-06-12 17:15:33.731 NETWork[10975:60b] {
    MIMEType = "application/json";
    URL = "http://www.duitang.com/album/1733789/masn/p/0/1/";
    allHeaderFields =     {
        Connection = "keep-alive";
        "Content-Type" = "application/json;charset=UTF-8";
        Date = "Thu, 12 Jun 2014 09:15:33 GMT";
        Server = nginx;
        "Transfer-Encoding" = Identity;
        "X-Powered-By" = Japa;
    };
    expectedContentLength = "-1";
    statusCode = 200;
    suggestedFilename = 1;
    textEncodingName = "utf-8";
}

對照紅色字體,仔細查一查上面的表,都出現了這些參數哦.

 上面的列印信息,是你對伺服器請求之後,伺服器Response給你的一個allHeaderFields信息,可以瞭解到伺服器的一些狀態值.

其實,我們給伺服器發送POST請求的時候,有時候需要自己組織allHeaderFields信息,比如最常見的Content-Length.

request也有著一個Header Fields的列表:

Request Headers(標準請求頭)

Common non-standard request headers(非標準請求頭)

#define NUM_STRING(num)  [NSString stringWithFormat:@"%lu", (num)]

/**
 執行一個java腳本獲取User-Agent字元串
 
 @return User-Agent字元串
 */
NS_INLINE NSString* UserAgent()
{
    UIWebView* webView = [[UIWebView alloc] initWithFrame:CGRectZero];
    NSString *userAgentString = [webView stringByEvaluatingJavaScriptFromString:
                                 @"navigator.userAgent"];
    
    return userAgentString;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    // 創建鏈接
    /* ============================================================================== */
    NETWorkRequest *request = [NETWorkRequest new];
    [request configRequest:^(NSMutableURLRequest *request)
     {
         // 配置網址鏈接
         request.URL = [NSURL URLWithString:@"http://webservice.webxml.com.cn/WebServices/MobileCodeWS.asmx/getMobileCodeInfo"];
         
         // 配置請求類型
         request.HTTPMethod = @"POST";
         
         // 配置請求報文
         NSString *dataString = @"mobileCode=15910514636&userID=";
         
         [request setValue:UserAgent()
        forHTTPHeaderField:@"User-Agent"];
         
         [request setValue:@"application/x-www-form-urlencoded"
        forHTTPHeaderField:@"Content-Type"];
         
         [request setValue:NUM_STRING([dataString toUTF8Data].length)
        forHTTPHeaderField:@"Content-Length"];
         
         // 配置包體
         request.HTTPBody = [dataString toUTF8Data];
         
         // 設置時間間隔
         request.timeoutInterval = 1.f;
         
         // 設置緩存策略
         request.cachePolicy = NSURLRequestUseProtocolCachePolicy;
     }];
    
    // 創建請求
    /* ============================================================================== */
    NETWorkConnection *connection = [[NETWorkConnection alloc] initWithRequest:request];
    [connection resultBlock:^(NSDictionary *info, NSData *data, NSError *error) {
        
        ONOXMLDocument *document = [ONOXMLDocument XMLDocumentWithData:data
                                                                 error:nil];
        NSLog(@"%@", document);

    }];
    
    // 開始請求
    /* ============================================================================== */
    [connection start];
}

一個POST請求由頭和包體所組成,頭就是上面列表中出現的那些參數,Body部分才是你需要傳遞的一些參數.

執行結果如下:

2014-06-12 17:29:52.137 NETWork[11061:60b] <string xmlns="http://WebXml.com.cn/">15910514636：北京 北京 北京移動全球通卡</string>

總結:

如果網路請求走HTTP協議的話,其實很容易.GET請求非常簡單,不贅述,POST就是設置Headr Field以及Body的幹活,也很簡單,當你理解了這些後,封裝一個自己的網路請求類真的超級簡單哦.

附錄:

正規攜帶參數的POST請求如下所示

    // 配置
    NETWorkRequest *request = [[NETWorkRequest alloc] init];
    [request configRequest:^(NSMutableURLRequest *request) {
        
        // 網址
        NSString *urlString = @"http://trainddtestapi.tidoo.cn/acts/findLikeActAndCourseList.do";
        
        // 參數
        NSString *params    = @"appkey=peixunduoduo&citycode=100000&lat=39.909875&lng=116.502042&sign=f3f4491cc0ac8caccf0544df9e68baab&timestamp=1404444014&userid=101";
        
        request.HTTPMethod  = @"POST";
        request.HTTPBody    = [params dataUsingEncoding:NSUTF8StringEncoding];
        request.URL         = [NSURL URLWithString:urlString];
        
        
    }];
    
    // 請求
    NETWorkConnection *connection = [[NETWorkConnection alloc] initWithRequest:request];
    [connection infoBlock:^(NSDictionary *info) {
        NSLog(@"%@", info);
    } progressBlock:^(long long currentBytes, long long totalBytes) {
    } resultBlock:^(NSDictionary *info, NSData *data, NSError *error) {
        NSString *result = [[NSString alloc] initWithData:data
                                                 encoding:NSUTF8StringEncoding];
        NSLog(@"%@", result);
    }];
    [connection start];

 參考鏈接:

http://www.cnblogs.com/YouXianMing/p/3784313.html

http://blog.csdn.net/weisubao/article/details/42170689

http://tools.jb51.net/table/http_request_method