簡(jiǎn)介：

• AFNetworking：第三方框架,簡(jiǎn)單易用吉懊，提供了基本夠用的常用功能刽脖，維護(hù)和使用者多腕窥，在iOS開(kāi)發(fā)中怒坯，使用比較廣泛
• AFN的github地址
  https://github.com/pokeb/AFNetworking/AFNetworking

AFHTTPSessionManager

• AFHTTPSessionManager內(nèi)部包裝了NSURLSession
• 是AFN中最重要的對(duì)象之一
• 封裝了HTTP請(qǐng)求的常見(jiàn)處理
• GET\POST請(qǐng)求
• 解析服務(wù)器的響應(yīng)數(shù)據(jù)
• 創(chuàng)建

AFHTTPSessionManager*mgr= [AFHTTPSessionManagermanager];

AFHTTPRequestOperationManager

• AFHTTPRequestOperationManager內(nèi)部包裝了NSURLConnection
• 創(chuàng)建

AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];

GET\POST請(qǐng)求

• GET(1)

//AFHTTPRequestOperationManager內(nèi)部包裝了NSURLConnection
AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];
    
    NSDictionary *params = @{
                             @"username" : @"520it",
                             @"pwd" : @"520it"
                             };
    
    [mgr GET:@"http://120.25.226.186:32812/login" parameters:params
     success:^(AFHTTPRequestOperation *operation, id responseObject) {
         NSLog(@"請(qǐng)求成功---%@", responseObject);
     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
         NSLog(@"請(qǐng)求失敗---%@", error);
    }];

• GET(2)

// AFHTTPSessionManager內(nèi)部包裝了NSURLSession
    AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];

    NSDictionary *params = @{
                             @"username" : @"520it",
                             @"pwd" : @"520it"
                             };

    [mgr GET:@"http://120.25.226.186:32812/login" parameters:params success:^(NSURLSessionDataTask *task, id responseObject) {
        NSLog(@"請(qǐng)求成功---%@", responseObject);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        NSLog(@"請(qǐng)求失敗---%@", error);
    }];

• POST

// AFHTTPRequestOperationManager內(nèi)部包裝了NSURLConnection
    AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];
    
    NSDictionary *params = @{
                             @"username" : @"520it",
                             @"pwd" : @"520it"
                             };
    
    [mgr POST:@"http://120.25.226.186:32812/login" parameters:params
     success:^(AFHTTPRequestOperation *operation, id responseObject) {
         NSLog(@"請(qǐng)求成功---%@", responseObject);
     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
         NSLog(@"請(qǐng)求失敗---%@", error);
     }];

上傳文件

    AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];

    [mgr POST:@"http://120.25.226.186:32812/upload" parameters:@{@"username" : @"123"}
        constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        // 在這個(gè)block中設(shè)置需要上傳的文件
            [formData appendPartWithFileURL:[NSURL fileURLWithPath:@"/Users/xiaomage/Desktop/placeholder.png"] name:@"file" error:nil];
    } success:^(NSURLSessionDataTask *task, id responseObject) {
        NSLog(@"-------%@", responseObject);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        
    }];

解析服務(wù)器返回的數(shù)據(jù)

• 默認(rèn)會(huì)解析JSON數(shù)據(jù)
• XML數(shù)據(jù)

AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
    
    // responseSerializer 用來(lái)解析服務(wù)器返回的數(shù)據(jù)
    
    // 告訴AFN炫狱，以XML形式解析服務(wù)器返回的數(shù)據(jù)
    mgr.responseSerializer = [AFXMLParserResponseSerializer serializer];
    
    NSDictionary *params = @{
                             @"username" : @"520it",
                             @"pwd" : @"520it",
                             @"type" : @"XML"
                             };
    
    [mgr GET:@"http://120.25.226.186:32812/login" parameters:params success:^(NSURLSessionDataTask *task, NSXMLParser *parser) {
        
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        NSLog(@"請(qǐng)求失敗---%@", error);
    }];

• 任何數(shù)據(jù)類型

AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
    // 直接使用“服務(wù)器本來(lái)返回的數(shù)據(jù)”，不做任何解析
    mgr.responseSerializer = [AFHTTPResponseSerializer serializer];   
//    [AFJSONResponseSerializer serializer]; // 解析服務(wù)器返回的JSON數(shù)據(jù)
//    [AFXMLParserResponseSerializer serializer]; // 解析服務(wù)器返回的XML數(shù)據(jù)
    
    [mgr GET:@"http://120.25.226.186:32812/resources/images/minion_02.png" parameters:nil success:^(NSURLSessionDataTask *task, NSData *responseObject) {
        NSLog(@"請(qǐng)求成功---%zd", responseObject.length);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        NSLog(@"請(qǐng)求失敗---%@", error);
    }];

網(wǎng)絡(luò)狀態(tài)監(jiān)控

    // 開(kāi)始網(wǎng)絡(luò)監(jiān)控
    AFNetworkReachabilityManager *mgr = [AFNetworkReachabilityManager sharedManager];
    
    [mgr setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        NSLog(@"-----當(dāng)前的網(wǎng)絡(luò)狀態(tài)---%zd", status);
    }];
    
    [mgr startMonitoring];
// 拿到當(dāng)前網(wǎng)絡(luò)狀態(tài)
//    mgr.networkReachabilityStatus;

//    AFNetworkReachabilityStatusUnknown          = -1,
//    AFNetworkReachabilityStatusNotReachable     = 0,
//    AFNetworkReachabilityStatusReachableViaWWAN = 1, //自帶網(wǎng)絡(luò)
//    AFNetworkReachabilityStatusReachableViaWiFi = 2, //WiFi