iOS--AFNetworking3.0的使用

从github下载AFNetworking3.0，把AFNetworking.h 和 UIKit+AFNetworking.h导入工程

(下载地址:https://github.com/AFNetworking/AFNetworking.git)

注意！！

AFNetworking不支持text/html

遇到请求头到错误时在AFURLResponseSerialization.m里修改

//把@"text/html" 添加到下面代码里就行，
self.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript",@"text/html",@"text/plain", nil];  

或者在需要的地方写代码

//设置请求头contenttypes信息
     manager.responseSerializer.acceptableContentTypes = [manager.responseSerializer.acceptableContentTypes setByAddingObject:@"text/html"];

 

//初始化
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

 如果后台接口是二进制格式

//默认的
manager.requestSerializer = [AFHTTPRequestSerializer serializer];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];

如果后台接口是JSON格式

manager.requestSerializer = [AFJSONRequestSerializer serializer];
manager.responseSerializer = [AFJSONResponseSerializer serializer];

GET Request

[manager GET:@"example" parameters:parameters progress:^(NSProgress * _Nonnull downloadProgress) {
        //这里可以用来显示下载进度
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        //成功
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        //失败
    }];

POST  Request

//post请求参数一般用字典，键要与请求url的参数名一致。
[manager POST:@"example" parameters:parameters progress:^(NSProgress * _Nonnull uploadProgress) {
        //进度
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        //成功
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        //失败
    }];

Shared Network Reachability

//监听网络
   /*
    AFNetworkReachabilityStatusUnknown          = -1,
    AFNetworkReachabilityStatusNotReachable     = 0,
    AFNetworkReachabilityStatusReachableViaWWAN = 1,
    AFNetworkReachabilityStatusReachableViaWiFi = 2,
    NSString * AFStringFromNetworkReachabilityStatus(AFNetworkReachabilityStatus status) {
    switch (status) {
        case AFNetworkReachabilityStatusNotReachable:
            return NSLocalizedStringFromTable(@"Not Reachable", @"AFNetworking", nil);
        case AFNetworkReachabilityStatusReachableViaWWAN:
            return NSLocalizedStringFromTable(@"Reachable via WWAN", @"AFNetworking", nil);
        case AFNetworkReachabilityStatusReachableViaWiFi:
            return NSLocalizedStringFromTable(@"Reachable via WiFi", @"AFNetworking", nil);
        case AFNetworkReachabilityStatusUnknown:
        default:
            return NSLocalizedStringFromTable(@"Unknown", @"AFNetworking", nil);
    }
}
   */    
    [[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {

          NSLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status))
　　}];

 [[AFNetworkReachabilityManager sharedManager] startMonitoring];

//单纯判断有无网络可以用isReachable属性
if ([[AFNetworkReachabilityManager manager] isReachable] == NO) {
    //do something  
}

上传图片

图片上传的时候要问后台只能单张上传或者多张上传.

        //单张上传
        [manager POST:url parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
            //创建待上传图片的名称，为了不重名，一般使用当前时间+图片类型(eg .png)为名称
            NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
            formatter.dateFormat = @"yyyyMMddHHmmss";
            //服务器保存上传图片的路径，这个路径后台给的话用后台的，没给就自己创建(此处没给)
            NSString *name = [formatter stringFromDate:[NSDate date]];
            //后缀  .png   .jpg
            NSString *fileName = [[formatter stringFromDate:[NSDate date]] stringByAppendingString:@".jpg"];
            /*
             *UIImageJPEGRepresentation(image,1.0)   //待压缩比例
             *UIImagePNGRepresentation(image)
             *这是iOS自带的将UIImage对象转成NSData
             */
            NSData *data = UIImageJPEGRepresentation(image,1.0);
            //开始上传
            [formData appendPartWithFileData:data name:name fileName:fileName mimeType:@"image/jpg"];
            
        } progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            //根据responseObject获取后台返回的内容
            
        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        }];

  /*
  * 多张上传和单张上传的区别：
  * 图片名要按时间+数组中图片的index+.jpg
  * 服务器保存图片的路径按时间+数组中图片的index
  */
  //多张上传
    //图片上传
    for (int i = 0; i < imageArr.count; i ++) {
       [manager POST:@"http://112.54.80.235:50406/IndustryPioneer.svc/uploadimageIos" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
            //创建待上传图片的名称，为了不重名，一般使用当前时间+图片类型(eg .png)为名称
            NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
            formatter.dateFormat = @"yyyyMMddHHmmss";
            //服务器保存上传图片的路径，这个路径后台给的话用后台的，没给就自己创建(此处没给)
            NSString *name = [NSString stringWithFormat:@"%@%d",[formatter stringFromDate:[NSDate date]],i];
            //后缀  .png   .jpg
            NSString *fileName = [[NSString stringWithFormat:@"%@%d",[formatter stringFromDate:[NSDate date]],i] stringByAppendingString:@".jpg"];
            /*
             *UIImageJPEGRepresentation(image,1.0)   //待压缩比例
             *UIImagePNGRepresentation(image)
             *这是iOS自带的将UIImage对象转成NSData
             */
            
            NSData *data = UIImageJPEGRepresentation([imageArr objectAtIndex :i],1.0);
            //开始上传
            [formData appendPartWithFileData:data name:name fileName:fileName mimeType:@"image/jpg"];
            
        } progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            //根据responseObject获取后台返回的内容
 
        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

        }];

    }