使用AFNetworking进行图片上传

//图片 
NSData* imageData = UIImagePNGRepresentation(tempImage);

//上传图片
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
NSString *urlstring = @"api";
[manager POST:urlstring parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
// 在此位置生成一个要上传的数据体
// form对应的是html文件中的表单
// 在网络开发中，上传文件时，是文件不允许被覆盖，文件重名
// 要解决此问题，可以在上传时使用当前的系统事件作为文件名
// 设置时间格式
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.dateFormat = @"yyyyMMddHHmmss";
NSString *str = [formatter stringFromDate:[NSDate date]];
NSString *fileName = [NSString stringWithFormat:@"%@.png", str];
	  
/*
此方法参数
1. 要上传的[二进制数据]
2. 对应网站上[upload.php中]处理文件的[字段"file"]
3. 要保存在服务器上的[文件名]
4. 上传文件的[mimeType]
*/
 [formData appendPartWithFileData:data
                                    name:@"image"
                                fileName:@"image.png"
                                mimeType:@"image/png/jpeg"];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
        if (success) {
            success(responseObject);
        }
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        if (fail) {
            fail();
        }
}];

</pre><pre>

网上搜到的

把一张图片 转成二进制流 用AFNetworking POST 上传到服务器.

AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:[NSURL URLWithString:BaseUrl]];
            manager.responseSerializer = [AFJSONResponseSerializer serializer];
            manager.requestSerializer.timeoutInterval = TimeoutInterval;
            [manager POST:Request_updateCompanyInfo parameters:paramDict constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
                NSData *data=UIImagePNGRepresentation(_userImage);
// 设置时间格式
                NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
                formatter.dateFormat = @"yyyyMMddHHmmss";
                NSString *str = [formatter stringFromDate:[NSDate date]];
                NSString *fileName = [NSString stringWithFormat:@"%@.png", str];
                [formData appendPartWithFileData:data name:@"logo_img" fileName:fileName mimeType:@"image/png"];
            } success:^(AFHTTPRequestOperation *operation, id responseObject) {
                [super stopLoadingCompletedWithMessage:@"提交成功"];
                [self.navigationController popViewControllerAnimated:YES];
            } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

            }];