Question

以下是我必须设置数据的模型。我正在使用数组和字典来实现这一点，这是我尝试过的代码。但它给我的输出是invalid JSON 我想问的另一件事是为什么log of an array starts and ends with small braces? 任何帮助将非常感激。

代码：

NSDictionary *paramDic = [NSDictionary dictionaryWithObjectsAndKeys:
                       parameterName,@"parameterName",
                       parameterType, @"parameterType",
                       [NSNumber numberWithBool:parameterSorting],@"parameterSorting",[NSNumber numberWithBool:parameterSorting],
                       @"parameterOrdering",
                       nil];

NSMutableArray *paramArray = [NSMutableArray arrayWithObject:paramDic];
NSDictionary *paramData = @{@"rqBody":@{@"catalogName":@"",@"userId":@"", @"parameter":paramArray, @"catalogMode":@""}};

NSData *postData = [NSKeyedArchiver archivedDataWithRootObject:paramData];`

输出

{"rqBody":{"catalogName":"abcd","userId":"65265hgshg76","parameter":"(
        {
        parameterName = anandShankar;
        parameterOrdering = 1;
        parameterSorting = 1;
        parameterType = Text;
    }
)","catalogMode":"xxxxxx"}}

期望输出：

{"rqBody":{"catalogName":"abcd","userId":"65265hgshg76","parameter":[{
        "parameterName" : "anandShankar",
        "parameterOrdering" : 1,
        "parameterSorting" : 1,
        "parameterType" : "Text"
    }],"catalogMode":"xxxxxx"}}

Answer 1

它没有错。在控制台或日志圆括号()表示数组。如果它显示圆括号那么它是数组。你永远不会在控制台或日志中使用[]方括号。

更新：

  NSData *data = [NSJSONSerialization dataWithJSONObject:paramData options:kNilOptions error:nil];

然后将此数据发送到服务器。它将在你想要的json fromat

希望这会有所帮助：）

Answer 2

试试这段代码：

NSDictionary *paramDic = [NSDictionary dictionaryWithObjectsAndKeys:
        @"Object1",@"parameterName",
        @"Object2", @"parameterType",
        @'Object3',@"parameterSorting",@"Object4",
        @"parameterOrdering",
                nil];
NSMutableArray *paramArray = [NSMutableArray arrayWithObject:paramDic];

NSDictionary *paramData = @{@"rqBody":@{@"catalogName":@"",@"userId":@"", @"parameter":paramArray, @"catalogMode":@""}};

添加以下行：

NSError * err;
NSData * jsonData = [NSJSONSerialization dataWithJSONObject:paramData options:0 error:&err];
NSString * myString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

NSLog(@"%@", myString); // it will print valid json

<强> JSON

{  
  "rqBody":{  
     "catalogName":"",
     "parameter":[  
        {  
           "parameterOrdering":"Object4",
           "parameterName":"Object1",
           "parameterType":"Object2",
           "parameterSorting":51
        }
     ],
     "userId":"",
     "catalogMode":""
  }
}

使用Array和Dictionary以正确的JSON格式设置数据

2 个答案: