在 Objective-C 中为 POST HTTP 请求生成 JSON 负载

发布于 2024-08-02 01:36:23 字数 512 浏览 1 评论 0原文

有没有人有任何示例代码来创建 JSON 有效负载以作为 Objective-C 中的 HTTP POST 请求发送？我希望生成的 json 有效负载的示例如下所示：

{__metadata:{\"Uri\":\"/NewLoc/\",
\"Type\":\"Location.NewLoc\"},  \"LocID\":\"100006\",
\"latitude\": \"40.123456\", \"longitude\": \"-65.876543\",
\"VisitDate\": \"\\/Date(1249909200000)\\/\", \"type\": \"S\"}

我正在使用从以下位置下载的 json-framework： http://code.google.com/p/json-framework/

任何示例代码将不胜感激。

原文

Does anyone have any sample code to create a JSON payload to be sent as a HTTP POST Request in Objective-C? An example of the json payload I am looking to generate looks like:

{__metadata:{\"Uri\":\"/NewLoc/\",
\"Type\":\"Location.NewLoc\"},  \"LocID\":\"100006\",
\"latitude\": \"40.123456\", \"longitude\": \"-65.876543\",
\"VisitDate\": \"\\/Date(1249909200000)\\/\", \"type\": \"S\"}

I am using the the json-framework downloaded from: http://code.google.com/p/json-framework/

Any sample code would be greatly appreciated.

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兮颜 2024-08-09 01:36:23

您已经在使用 json 框架，所以工作就完成了一半。

该框架可以采用任何键值编码兼容对象并将其转换为 JSON。它可以是一个 Core Data 对象、一个 NSDictionary 对象以及任何支持 KVC 的任意对象。

此外，json 框架添加了一个类别，允许您使用 JSONRepresentation 消息从这些对象中获取 JSON 字符串。

所以，假设你想使用 NSDictionary，你可以这样写：

NSMutableDictionary* jsonObject = [NSMutableDictionary dictionary];
NSMutableDictionary* metadata = [NSMutableDictionary dictionary];
[metadata setObject:@"NewLoc" forKey:@"Uri"];
[metadata setObject:@"Location.NewLoc" forKey:@"Type"];
[jsonObject setObject:metadata forKey:@"__metadata"];
[jsonObject setObject:@"100006" forKey:@"latitude"];
// ... complete the other values
// 
NSString* jsonString = jsonObject.JSONRepresentation;
// jsonString now contains your example strings.

You're already using the json-framework, so that's half the work done.

This framework can take any Key-Value Coding compatible object and translate it to JSON. It could be a Core Data object, an NSDictionary object, and any arbitrary object as long as it supports KVC.

In addition, the json-framework adds a category which allows you to get a JSON string out of these objects using the JSONRepresentation message.

So, suppose you wanted to use NSDictionary, you could write:

NSMutableDictionary* jsonObject = [NSMutableDictionary dictionary];
NSMutableDictionary* metadata = [NSMutableDictionary dictionary];
[metadata setObject:@"NewLoc" forKey:@"Uri"];
[metadata setObject:@"Location.NewLoc" forKey:@"Type"];
[jsonObject setObject:metadata forKey:@"__metadata"];
[jsonObject setObject:@"100006" forKey:@"latitude"];
// ... complete the other values
// 
NSString* jsonString = jsonObject.JSONRepresentation;
// jsonString now contains your example strings.

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