今天项目里做一个上传图片等个人信息的时候，使用了第三方AFNetworking
- (AFHTTPRequestOperation *)POST:(NSString *)URLString
parameters:(id)parameters
constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block
success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure;
但是一直都没有回调，服务器那边也接收不到请求，不知道怎么回事，于是写了一个原生的请求，有空再研究AF
- (void)postWithUrl:(NSString *)url params:(NSDictionary *)params imageData:(NSData *)imageData imageKeyword:(NSString *)imageKeywork fileName:(NSString *)fileName block:(void (^)(id responsObject, NSError *error))block
{
self.myBlock = block;
//创建可变请求
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:url]];
//设置请求超时时间
[request setTimeoutInterval:60.0];
//创建HTTP body的字符串
NSMutableString *bodyString = [NSMutableString string];
//遍历所有字段
for (NSString *key in params) {
//添加分界线、换行符
[bodyString appendFormat:@"--%@\r\n",BOUNDARY];
//添加字段名称、换2行
[bodyString appendFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",key];
//添加字段的值、换行符
[bodyString appendFormat:@"%@\r\n",[params objectForKey:key]];
}
//添加分界线、换行符
[bodyString appendFormat:@"--%@\r\n", BOUNDARY];
//声明图片字段（imageKeyword为图片字段名，fileName为图片名）
[bodyString appendFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"%@.png\"\r\n",imageKeywork,fileName];
//声明上传文件的格式、换2行
[bodyString appendString:@"Content-Type: image/png\r\n\r\n"];
//声明结束符
NSString *endString = [NSString stringWithFormat:@"\r\n--%@--\r\n",BOUNDARY];
//声明请求data，用来放入HTTP body
NSMutableData *bodyData = [[NSMutableData alloc] init];
//将body字符串转化为UTF8格式的二进制 加入bodyData
[bodyData appendData:[bodyString dataUsingEncoding:NSUTF8StringEncoding]];
//将图片的data 加入bodyData
[bodyData appendData:imageData];
//将结束符转化为UTF8格式的二进制 加入bodyData
[bodyData appendData:[endString dataUsingEncoding:NSUTF8StringEncoding]];
//设置HTTP Header 中 Content-Type 的值
[request addValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@",BOUNDARY] forHTTPHeaderField:@"Content-Type"];
//设置HTTP Header 中 Content-Length 的值
[request addValue:[NSString stringWithFormat:@"%ld",[bodyData length]] forHTTPHeaderField:@"Content-Length"];
//设置请求体
[request setHTTPBody:bodyData];
//设置请求方式（POST、GET）
[request setHTTPMethod:@"POST"];
[NSURLConnection connectionWithRequest:request delegate:self];
}