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
来源: http://www.phpxs.com/code/1005613/