OC中如何把字典中的數據拼接成URL字符串

可以使用NSDictionary中的鍵值對來拼接Json數據，非常方便，也可以進行嵌套，直接上代碼：

//開始拼接Json字符串

NSDictionary *dataDictionary= [NSDictionary dictionaryWithObjectsAndKeys:@"mac",@"mac",

@"game",@"game",

@"devicetoken",@"devicetoken",

@"device",@"device",

@"gv",@"gv",

@"lang",@"lang",

@"os",@"os",nil];

NSDictionary *parmDictionary= [NSDictionary dictionaryWithObjectsAndKeys:@"getSession",@"act",

dataDictionary,@"data",nil];

NSDictionary *jsonDictionary=[NSDictionary dictionaryWithObjectsAndKeys:@"pv",@"pv",

parmDictionary,@"param",nil];

SBJsonWriter *writer = [[SBJsonWriter alloc] init];

NSString *jasonString = [writer stringWithObject:jsonDictionary];

NSLog(@"%@",jasonString);

上面的代碼用到了三層嵌套，註意的是，NSDictionary中，前面的是值，後面的是鍵。

拼接後的結果如下：

{"pv":"pv","param":{"act":"getSession","data":{"os":"os","mac":"mac","game":"game","gv":"gv","lang":"lang","devicetoken":"devicetoken","device":"device"}}}

使用 Json在線校驗工具 解析後：

{

"pv": "pv",

"param": {

"act": "getSession",

"data": {

"os": "os",

"mac": "mac",

"game": "game",

"gv": "gv",

"lang": "lang",

"devicetoken": "devicetoken",

"device": "device"

}

}

}