JSON拼接

转载自:   http://www.tuicool.com/articles/qUJVZb

SBJson包的下载地址在上一篇文章中。

可以使用NSDictionary中的键值对来拼接Json数据，非常方便，也可以进行嵌套，直接上代码：

//开始拼接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);

上面的代码用到了三层嵌套，注意的是，NSDictionary中，前面的是值，后面的是键。

拼接后的结果如下：

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

使用  Json在线校验工具  解析后：

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