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[操作系统]IOS开发之AFNetworking开源库的使用


IOS开发之AFNetworking开源库的使用

1.简介

  常见的处理网络请求方式

  (1)NSURLConnection/NSURLSession

  (2)ASIHttpRequest 早期项目中比较常见, 由于作者不更新了

  (3)AFNetworking 推荐使用, 项目中使用

  (4)MKNetworkKit 试试

2.配置和使用

  2.1 配置 

    库文件拖入工程中, 包含头文件 

    #import "AFNetworking.h"

  2.2 使用

     2.2.1.GET请求(html,json,)

-(void)testGetRequest{    NSString *urlstring = @"http://www.baidu.com";  urlstring = @"http://m.weather.com.cn/data/101010100.html";  urlstring = @"http://mp.manzuo.com/china/beijing/home_2.";    //定义AFNetworking管理  AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];    //注意:默认数据是JSON,content-type也是JSON,responseObject是解析字典和数组,不是产生错误Code=-1016  //解决:设置解析器为HTTP形式,下载回来是NSData  manager.responseSerializer = [AFCompoundResponseSerializer serializer];    [manager GET:urlstring parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {//    responseObject重要参数,包含下载数据//    NSLog(@"o = %@",responseObject);        NSString *str = [[NSString alloc]initWithData:responseObject encoding:NSUTF8StringEncoding];    NSLog(@"str = %@",str);      } failure:^(AFHTTPRequestOperation *operation, NSError *error) {    NSLog(@"error = %@",error);  }];}

testGetRequest

     2.2.2.POST请求

-(void)testPostRequest{  //POST接口:  //参数1:@"user" : @"quiet"  //参数2:@"password" : @"123"    NSString *urlString = @"http://quiet.local/testdir/login.php";    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];  manager.responseSerializer = [AFCompoundResponseSerializer serializer];    //参数1:传入地址  //参数2:传入URL请求的参数,格式传入字典  [manager POST:urlString parameters:@{@"user": @"quiet",@"password" : @"123"} success:^(AFHTTPRequestOperation *operation, id responseObject) {     NSString *str = [[NSString alloc]initWithData:responseObject encoding:NSUTF8StringEncoding];    NSLog(@"str = %@",str);  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {    NSLog(@"error = %@",error);  }];}

testPostRequest

     2.2.3.上传文件(上传图片)

-(void)testUploadFile{    //POST上传的接口  NSString *urlString = @"http://quiet.local/uploadtest/pk.php";  //参数名:image : 参数值是图片  AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];  manager.responseSerializer = [AFCompoundResponseSerializer serializer];    [manager POST:urlString parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {    NSString *path = [[NSBundle mainBundle]pathForResource:@"daji.jpg" ofType:nil];        [formData appendPartWithFileURL:[NSURL URLWithString:path] name:@"image" fileName:@"666.jpg" mimeType:@"image/jpeg" error:nil];  } success:^(AFHTTPRequestOperation *operation, id responseObject) {    NSString *str = [[NSString alloc]initWithData:responseObject encoding:NSUTF8StringEncoding];    NSLog(@"str = %@",str);  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {     NSLog(@"error = %@",error);  }];      [manager POST:urlString parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {        //实现:上传的数据附加到请求体中    //fileName:上传后的文件名    //mimeType:需要上网搜索mime,把相应的格式复制过来    NSString *path = [[NSBundle mainBundle]pathForResource:@"daji.jpg" ofType:nil];      [formData appendPartWithFileURL:[NSURL fileURLWithPath:path] name:@"image" fileName:@"666.jpg" mimeType:@"image/jpeg" error:nil];        } success:^(AFHTTPRequestOperation *operation, id responseObject) {    NSString *str = [[NSString alloc]initWithData:responseObject encoding:NSUTF8StringEncoding];    NSLog(@"str = %@",str);  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {    NSLog(@"error = %@",error);  }];  }

testUploadFile

 

     2.2.4.下载文件

-(void)testDownloadFile{  NSString *urlString = @"http://imgcache.qq.com/club/item/avatar/zip/7/i87/all.zip";    //创建会话管理对象(通过默认配置)  AFURLSessionManager *manager = [[AFURLSessionManager alloc]initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];  NSURLSessionDownloadTask *task = [manager downloadTaskWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlString]] progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {        //返回文件保存的位置    NSString *path = [NSString stringWithFormat:@"%@/Documents/all.zip",NSHomeDirectory()];    NSLog(@"%@",NSHomeDirectory());    return [NSURL fileURLWithPath:path];      } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {    NSLog(@"下载完成");  }];    //启动任务  [task resume];  }

testDownloadFile

     2.2.5.监控网络状态

-(void)testMonitorNetworkStatus{    AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc]initWithBaseURL:[NSURL URLWithString:@"www.baidu.com"]];  [manager.reachabilityManager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {    NSDictionary *dict = @{      @(AFNetworkReachabilityStatusUnknown): @"未知",      @(AFNetworkReachabilityStatusNotReachable): @"不可达",      @(AFNetworkReachabilityStatusReachableViaWWAN): @"GPRS",      @(AFNetworkReachabilityStatusReachableViaWiFi): @"Wifi",      };    NSLog(@"状态为 %@",dict[@(status)]);      }];  //开启状态监视  [manager.reachabilityManager startMonitoring];}

testMonitorNetworkStatus

     2.2.6.图片异步功能(替代SDWebImage)

          导入头文件

          #import "UIKit+AFNetworking.h"

          - (void)setImageWithURL:(NSURL *)url;

     2.2.7.有一些特殊的请求头

         BAIDU_WISE_UID=wapp_1428385381699_466;

         AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];  

         [manager.requestSerializer setValue:@"wapp_1428385381699_466" forHTTPHeaderField:@"BAIDU_WISE_UID"];