Question

我有一个扩展AFHTTPClient的Web服务类（MyAPIClient）。对Web服务器的所有请求都使用postPath方法发送，数据采用JSON格式。 MyAPIClient只包含一种方法：

- (id)initWithBaseURL:(NSURL *)url
{
    self = [super initWithBaseURL:url];
    if (!self) {
        return nil;
    }
    [self setDefaultHeader:@"Accept" value:@"application/json"];
    [self setParameterEncoding:AFJSONParameterEncoding];
    [self registerHTTPOperationClass:[AFJSONRequestOperation class]];   

    return self;
}

现在我要添加gzip编码。正如FAQ所说：

只需从NSMutableURLRequest获取HTTPBody，压缩即可数据，并在使用请求创建操作之前重新设置它。

我有Godzippa库，所以我可以压缩数据。接下来我想我需要覆盖postPath方法，如下所示：

-(void)postPath:(NSString *)path parameters:(NSDictionary *)parameters success:(void (^)(AFHTTPRequestOperation *, id))success failure:(void (^)(AFHTTPRequestOperation *, NSError *))failure
{
    NSMutableURLRequest *request = [self requestWithMethod:@"POST" path:path parameters:parameters];
    NSData *newData = [[request HTTPBody] dataByGZipCompressingWithError:nil];    
    [request setHTTPBody:newData];

    [self setDefaultHeader:@"Content-Type" value:@"application/gzip"];

    AFHTTPRequestOperation *operation = [self HTTPRequestOperationWithRequest:request success:success failure:failure];
    [self enqueueHTTPRequestOperation:operation];

}

我认为这不是正确的方法，因为AFHTTPClient需要将NSDictionary转换为JSON，然后才能在gzip中编码并设置正确的“Content-Type”，对吧？任何帮助，将不胜感激。

Answer 1

如果有人有同样的问题，这是我的解决方案（Godzippa不适合我，所以我使用不同的库来编码数据）：

- (id)initWithBaseURL:(NSURL *)url
{
    self = [super initWithBaseURL:url];
    if (!self) {
        return nil;
    }
    [self setDefaultHeader:@"Content-Type" value:@"application/json"];
    [self setDefaultHeader:@"Content-Encoding" value:@"gzip"];
    [self registerHTTPOperationClass:[AFJSONRequestOperation class]];

    return self;
}

-(void)postPath:(NSString *)path parameters:(NSDictionary *)parameters success:(void (^)(AFHTTPRequestOperation *, id))success failure:(void (^)(AFHTTPRequestOperation *, NSError *))failure
{
    NSData *newData = [NSJSONSerialization dataWithJSONObject:parameters options:0 error:NULL];
    newData = [newData  gzipDeflate];

    NSMutableURLRequest *request = [self requestWithMethod:@"POST" path:path parameters:nil];    
    [request setHTTPBody:newData];

    AFHTTPRequestOperation *operation = [self HTTPRequestOperationWithRequest:request success:success failure:failure];
    [self enqueueHTTPRequestOperation:operation];
}

AFHTTPClient和gzip

1 个答案: