当然如果你的项目大的话最好使用开源的网络库ASI或者AFNetWork,库里面都有现有的方法,
如果你觉得就是想自己写一个,看这里
- (NSMutableURLRequest *)PostImageRequest:(NSString *)URLString UIImage:(UIImage*)image parameters:(NSDictionary *)parameters success:(void (^)(id))success failure:(void (^)(NSError *))failure { _success = success; _failure = failure; //分界线的标识符 NSString *TWITTERFON_FORM_BOUNDARY = @"AaB03x"; //根据url初始化request _request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:URLString] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:10]; //分界线 --AaB03x NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY]; //结束符 AaB03x-- NSString *endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary]; //得到图片的data NSData* data = UIImageJPEGRepresentation(image, 1); //http body的字符串 NSMutableString *body=[[NSMutableString alloc]init]; //参数的集合的所有key的集合 NSArray *keys= [parameters allKeys]; //遍历keys for(int i=0;i<[keys count];i++) { //得到当前key NSString *key=[keys objectAtIndex:i]; //如果key不是pic,说明value是字符类型,比如name:Boris if(![key isEqualToString:@"pic"]) { //添加分界线,换行 [body appendFormat:@"%@/r/n",MPboundary]; //添加字段名称,换2行 [body appendFormat:@"Content-Disposition: form-data; name=/"%@/"/r/n/r/n",key]; //添加字段的值 [body appendFormat:@"%@/r/n",[parameters objectForKey:key]]; } } ////添加分界线,换行 [body appendFormat:@"%@/r/n",MPboundary]; //声明pic字段,文件名为boris.png [body appendFormat:@"Content-Disposition: form-data; name=/"ImageField/"; filename=/"x1234.png/"/r/n"]; //声明上传文件的格式 [body appendFormat:@"Content-Type: image/jpeg/r/n/r/n"]; //声明结束符:--AaB03x-- NSString *end=[[NSString alloc]initWithFormat:@"/r/n%@",endMPboundary]; //声明myRequestData,用来放入http body NSMutableData *myRequestData=[NSMutableData data]; //将body字符串转化为UTF8格式的二进制 [myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]]; //将image的data加入 [myRequestData appendData:data]; //加入结束符--AaB03x-- [myRequestData appendData:[end dataUsingEncoding:NSUTF8StringEncoding]]; //设置HTTPHeader中Content-Type的值 NSString *content=[[NSString alloc] initWithFormat:@"multipart/form-data; boundary=%@",TWITTERFON_FORM_BOUNDARY]; //设置HTTPHeader [_request setValue:content forHTTPHeaderField:@"Content-Type"]; //设置Content-Length [_request setValue:[NSString stringWithFormat:@"%d", [myRequestData length]] forHTTPHeaderField:@"Content-Length"]; //设置http body [_request setHTTPBody:myRequestData]; //http method [_request setHTTPMethod:@"POST"]; return _request; }
- (void)start { if (_request) { _urlConnection = [[NSURLConnection alloc]initWithRequest:_request delegate:self]; } _request = nil; } - (void)syncStart { if (_request) { NSError *error; NSData *returnData = [NSURLConnection sendSynchronousRequest:_request returningResponse:nil error:&error]; if (!error) { NSString *receiveStr = [[NSString alloc]initWithData:returnData encoding:NSUTF8StringEncoding]; _success(receiveStr); } else { _failure(error); } } _request = nil; }
#pragma mark ---- NSURLConnectionDataDelegate ----- - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { //NSHTTPURLResponse *res = (NSHTTPURLResponse *)response; //NSLog(@"%@",[res allHeaderFields]); } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [_responseData appendData:data]; } -(void)connectionDidFinishLoading:(NSURLConnection *)connection { NSString *receiveStr = [[NSString alloc]initWithData:_responseData encoding:NSUTF8StringEncoding]; _success(receiveStr); } #pragma mark ---- NSURLConnectionDelegate ----- - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { _failure(error); }
使用方法:
[httpManager PostImageRequest:UploadImageUrl UIImage:image parameters:params success:^(id msg) { debugLog(@"upload image success:%@", msg); success(msg); } failure:^(NSError *error) { failure(error); }]; [httpManager start];
NSURLConnection的使用方法就不细说了,查看查询文档或者到网上找
原创文章,作者:奋斗,如若转载,请注明出处:https://blog.ytso.com/tech/app/5163.html