ASIHTTPRequest 用引号包裹 JSON答案

【问题标题】：ASIHTTPRequest wrapping JSON in quotesASIHTTPRequest 用引号包裹 JSON
【发布时间】：2011-06-27 14:18:15
【问题描述】：

我正在使用 ASIHTTPRequest 和 json-framework 将 JSON 发布到 Rails 应用程序，

问题是当 JSON 到达服务器时，它被双引号括起来，

这是我用来编码和发送 JSON 的代码：

ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@/shared_lists.json",kAPIRoot]]];

    NSString *dataString = [NSString stringWithFormat:@"shared_items=%@&shared_list=%@&facebook_id=%@",[sharedItems JSONRepresentation],[sharedList JSONRepresentation],facebookID];

    NSLog(@"%@",[NSString stringWithUTF8String:[[dataString dataUsingEncoding:NSUTF8StringEncoding] bytes]]);

    [request appendPostData:[dataString dataUsingEncoding:NSUTF8StringEncoding]];
    [request setRequestMethod:@"POST"];
    [request setDelegate:self];

    [request setDidFinishSelector:@selector(requestDone:)];
    [request setDidFailSelector:@selector(requestWentWrong:)];

    [queue addOperation:request];

正确记录为：

shared_items=[{"entity_id":"531","position":"1"},{"entity_id":"733","position":"2"},{"entity_id":"723","position":"3"},{"entity_id":"2530","position":"4"}]&shared_list={"list_id":1197}&facebook_id=-1540981104

虽然当它到达服务器时输出为：

shared_items="[{"entity_id":"531","position":"1"},{"entity_id":"733","position":"2"},{"entity_id":"723","position":"3"},{"entity_id":"2530","position":"4"}]",shared_list="{"list_id":1197}",facebook_id="-1540981104"

如何停止将数组包装为单个字符串？

【问题讨论】：

问题出在服务器的序列化上。

标签： iphone objective-c json asihttprequest

【解决方案1】：

试试这个方法：

ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@/shared_lists.json",kAPIRoot]]];

NSString *dataString = [NSString stringWithFormat:@"shared_items=%@&shared_list=%@&facebook_id=%@",[sharedItems JSONRepresentation],[sharedList JSONRepresentation],facebookID];

NSMutableData *requestBody = [[NSMutableData alloc] initWithData:[dataString dataUsingEncoding:NSUTF8StringEncoding]];
[request setRequestMethod:@"POST"];
[request setPostBody:requestBody];
[request addRequestHeader:@"Content-Type" value:@"application/json; encoding=utf-8"];

[request setUseSessionPersistence:NO];
[request setUseCookiePersistence:NO];
[request setCacheStoragePolicy:ASICacheForSessionDurationCacheStoragePolicy];

【讨论】：

【解决方案2】：

我通过手动创建 JSON 字符串解决了这个问题，如下所示：

NSString *dataString = [NSString stringWithFormat:@"{\"shared_items\":%@,\"shared_list\":%@,\"facebook_id\":%@}",[sharedItems JSONRepresentation],[sharedList JSONRepresentation],facebookID];

【讨论】：