有些服务器返回的数据，用AFN解析不了，原生的上传图片的方法，代码太长，所以用了ASI上传，代码如下：
UIImage *image = [self.photoArrayM[i] originImage];
// 1.URL
NSURL *url = [NSURL URLWithString:[baseUrl stringByAppendingString:@"/upload/uploadFile.action"]];
// 2.创建一个请求对象
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
// [request setPostValue:@"myFile" forKey:@"file"];
// [request setPostValue:@"提交" forKey:@"submit"];
[request setData:UIImageJPEGRepresentation(image,0.1)
withFileName:[NSString stringWithFormat:@"%d.jpg",i]
andContentType:@"image/jpeg/png"
forKey:[NSString stringWithFormat:@"file%d",i]];
// 3.监听请求结果
__weak typeof(request) weakRequest = request;
[request setCompletionBlock:^{
NSLog(@"wawa%@", [weakRequest responseString]);
}];
[request setFailedBlock:^{
NSLog(@"上传失败");
}];
// 4.开始请求
[request startAsynchronous];
