ios 中 数组、字典转成json格式上传到后台，遇到的问题

项目需求需要传json格式到后台

字典转成JSON

p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #000000 }
p.p2 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #000000; min-height: 21.0px }
p.p3 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #6122ae }
span.s1 { }
span.s2 { color: #3c828b }
span.s3 { color: #539aa4 }
span.s4 { color: #000000 }
span.s5 { color: #3e1e81 }
span.s6 { color: #c81b13 }
span.s7 { color: #6122ae }

AddGoodModel*model = _dataArray[i];

NSMutableDictionary*guigeDict =[NSMutableDictionary dictionary];

[guigeDict setValue:model.name forKey:@"name"];

[guigeDict setValue:model.isck forKey:@"isck"];

[guigeDict setValue:groupPrice forKey:@"groupprice"];

[guigeDict setValue:model.price forKey:@"price"];

[guigeDict setValue:model.storage forKey:@"storage"];

[guigeDict setValue:[NSString stringWithFormat:@"%ld",model.AddGoodID] forKey:@"id"];

[guigeDict setValue:model.commonid forKey:@"commonid"];

p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #1e9421 }
span.s1 { }

NSDictionary*parameter [email protected]{@"":[[NSString alloc]initWithData:[NSJSONSerialization dataWithJSONObject:guigeDict options:NSJSONWritingPrettyPrinted error:nil] encoding:NSUTF8StringEncoding]};

注意事项：字典不能是

p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #000000 }
span.s1 { }

[guigeDict setObject:@”“ forKey:@”“]; 方式赋值，不然会出现乱码的情况

数组转成JSON

数组转成json只能转成字符串的形式，注意好像不能是可变数组，只能是不可变数组

，不然会出现问题

p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #000000 }
span.s1 { }
span.s2 { color: #6122ae }
span.s3 { color: #3e1e81 }
span.s4 { color: #539aa4 }
span.s5 { color: #294c50 }

NSArray*jsonArray =[NSArray arrayWithArray:_NewArray];

NSString*string =[jsonArray JSONString];

注意：接收转换后的JSON格式数据一定要用相应类型接收赋值，不然会数据类型不对崩溃