AFNetworking发网络请求

1、#import "AFHTTPSessionManager.h"

2、 //网络请求管理器

AFHTTPSessionManager *sessionManager = [AFHTTPSessionManager manager];

3、 //设置请求内容的类型

//重中之重：添加header前先初始化AFJSONRequestSerializer，否则无法添加

sessionManager.requestSerializer = [AFJSONRequestSerializer new];

[sessionManager.requestSerializer setValue:@"application/json;charset=utf-8" forHTTPHeaderField:@"content-type"];

[sessionManager.requestSerializer setValue:@"text/xml,application/json" forHTTPHeaderField:@"Accept"];

[sessionManager.requestSerializer setValue:@"zh-CN,zh;q=0.8" forHTTPHeaderField:@"Accept-Language"];

[sessionManager.requestSerializer setValue:@"Keep-Alive" forHTTPHeaderField:@"Connection"];

[sessionManager.requestSerializer setValue:@"WLJY-ANDROID" forHTTPHeaderField:@"client-type"];

[sessionManager.requestSerializer setValue:@"identity" forHTTPHeaderField:@"Accept-Encoding"];

4、

[sessionManager POST:requestUrlStr parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData) {

//发送内容（NSData到后台即是file类型）下面举例上传一次多张图片，array即图片数组

for(int i =0; i< array.count ; i++){

NSData*imageData = （图片转NSData 自己查取单张图片array[i]）

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

formatter.dateFormat=@"yyyyMMddHHmmss";

NSString*str = [formatter stringFromDate:[NSDatedate]];

NSString*fileName = [NSString stringWithFormat:@"%@.jpg", str];

[formData appendPartWithFileData:imageData name:@"img" fileName:fileName mimeType:@"multipart/form-data"];

}

}progress:^(NSProgress*_NonnulluploadProgress) {

nil;

}success:^(NSURLSessionDataTask*_Nonnulltask,id _NullableresponseObject) {

NSLog(@"success");

}failure:^(NSURLSessionDataTask*_Nullabletask,NSError*_Nonnullerror) {

NSLog(@"default");

}];

}