字典对象与Json字符串相互转换

来源：互联网发布：程序员的自我修养书签编辑：程序博客网时间：2024/05/18 01:03

// 字典转换成Json字符串  NSDictionary * testDict = @{@"hid":@"1",                              @"cut_price":@"2",                              @"cut_num":@"3",                              @"goods_id":@"4",                              @"pool_id":@"5"};  NSError * error = nil;  NSData * jsonData = [NSJSONSerialization dataWithJSONObject:testDict options:NSJSONWritingPrettyPrinted error:&error];  NSString * jsonStr = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];  // 将json字符串转换成字典  NSData * getJsonData = [jsonStr dataUsingEncoding:NSUTF8StringEncoding];  NSDictionary * getDict = [NSJSONSerialization JSONObjectWithData:getJsonData options:NSJSONReadingMutableContainers error:&error];

//打印出来的字典的类型
Printing description of editDic:                       
{
    aAddTime = "2015-07-21 15:02:10";
    aAddress = "\U5728\U4e8e\U5979iyyyu";
    aAddressType = 0;
    aCityId = 3764;
    aCityName = "\U4e0a\U6d77\U5e02";
    aConstruction = "";
    aCountyId = 4138;
    aCountyName = "\U9ec4\U6d66\U533a";
    aId = 3206;
    aIsDefault = 1;
    aMobilePhone = 15225632580;
    aPhone = "";
    aProfileAccountId = 100000032954;
    aProvinceId = 3638;
    aProvinceName = "\U4e0a\U6d77";
    aRealName = "\U534e\U4e1c";
    aUpdateTime = "2015-07-21 15:02:10";
}
转成要上送的 字符串  （很明显，key都是要带引号的） 
Printing description of addressStr:
{
  "aId" : 3206,
  "aCityId" : 3764,
  "aProvinceName" : "上海",
  "aUpdateTime" : "2015-07-21 15:02:10",
  "aAddTime" : "2015-07-21 15:02:10",
  "aAddressType" : 0,
  "aIsDefault" : true,
  "aMobilePhone" : "15225632580",
  "aPhone" : "",
  "aConstruction" : "",
  "aRealName" : "华东",
  "aProfileAccountId" : 100000032954,
  "aCountyId" : 4138,
  "aAddress" : "在于她iyyyu",
  "aProvinceId" : 3638,
  "aCityName" : "上海市",
  "aCountyName" : "黄浦区"
}


一般的字符串并不能与字典进行转换，，必须是json格式的字符串，如：@“{name = @"成岗", gender = "男"}"； json字符串的小demo格式如下： NSString *jsonString = @“{name = @"成岗", gender = "男"}"；要知道字符串和字典的格式本不相同，如果是非son格式的字符串，即使强转也是错误的。

1 0