NSString 到字典？或者到 json 然后到字典？获取字符串的键对象答案

【问题标题】：NSString to dictionary? or to json then to dictionary? Getting objects of key for a stringNSString 到字典？或者到 json 然后到字典？获取字符串的键对象
【发布时间】：2014-10-27 08:49:27
【问题描述】：

我有一个字符串，然后我需要它作为 json，以便我可以解析它并获取键的对象。

例如，我需要将数组中 ID 的所有键对象显示在表格中。我将如何处理字符串？

建议？

这是字符串：

{
  "COMMON": {
    "RESULT_CD": "0000",
    "RESULT_MSG": "SUCCESS",
    "CATEGORY": "computing",
    "SVC_ID": "7",
    "TARGET": "list(VM)",
    "REQUEST_DATE": "201410271741",
    "PAGE_NO": 0,
    "NUM_PER_PAGE": 0
  },
  "DATA": {
    "VM_LIST": [
      {
        "@SVC_ID": "7",
        "ID": "VMSPE0000000083",
        "VM_ALIAS": "CV00900000083",
        "VM_OPER_DESC": "Power On",
        "MACHIN_STATUS_DESC": "[150748]success:virtual machine power on",
        "USVC_DESC": "7/Running, No Change r/hurhurhur, Inc.",
        "PURPOSE_NM": "Service_Default",
        "VIRT_TYPE_DESC": "Para Virtualization",
        "SERVER_STATUS_MSG": "VM running",
        "VCPU_CNT": "2",
        "MEM_SIZE_MB": "1024",
        "VNIC_CNT": "1",
        "OS_NAME": "CentOS_6.4_en_64"
      },
      {
        "@SVC_ID": "7",
        "ID": "VMSPE0000000093",
        "VM_ALIAS": "CV00900000093",
        "VM_OPER_DESC": "Reboot",
        "MACHIN_STATUS_DESC": "[150749]success:virtual machine reboot",
        "USVC_DESC": "7/Running, No Change r/hurhurhur, Inc.",
        "PURPOSE_NM": "Service_Default",
        "VIRT_TYPE_DESC": "Para Virtualization",
        "SERVER_STATUS_MSG": "VM running",
        "VCPU_CNT": "1",
        "MEM_SIZE_MB": "2048",
        "VNIC_CNT": "1",
        "OS_NAME": "Gentoo _2011-0 _en_64"
      },
      {
        "@SVC_ID": "7",
        "ID": "VMSPE0000000096",
        "VM_ALIAS": "CV00900000096",
        "VM_OPER_DESC": "Vm Initialization",
        "MACHIN_STATUS_DESC": "[163023]success:virtual machine running",
        "USVC_DESC": "7/Running, No Change r/hurhurhur, Inc.",
        "PURPOSE_NM": "Service_Default",
        "VIRT_TYPE_DESC": "Para Virtualization",
        "SERVER_STATUS_MSG": "VM running",
        "VCPU_CNT": "2",
        "MEM_SIZE_MB": "1024",
        "VNIC_CNT": "1",
        "OS_NAME": "OpenSuse_12.1_en_64"
      }
    ]
  }
}

编辑：

以下是我能用谷歌搜索的内容。

NSDictionary *JSON =
                 [NSJSONSerialization JSONObjectWithData: [response dataUsingEncoding:NSUTF8StringEncoding]
                                                 options: NSJSONReadingMutableContainers
                                                   error:nil];

但是，将字符串 NSLog 与 JSON NSLog 进行比较！！

字符串：

{
  "COMMON": {
    "RESULT_CD": "0000",
    "RESULT_MSG": "SUCCESS",
    "CATEGORY": "computing",
    "SVC_ID": "7",
    "TARGET": "list(VM)",
    "REQUEST_DATE": "201410271757",
    "PAGE_NO": 0,
    "NUM_PER_PAGE": 0
  },
  "DATA": {
    "VM_LIST": [
      {
        "@SVC_ID": "7",
        "ID": "VMSPE0000000083",
        "VM_ALIAS": "CV00900000083",
        "VM_OPER_DESC": "Power On",
        "MACHIN_STATUS_DESC": "[150748]success:virtual machine power on",
        "USVC_DESC": "7/Running, No Change r/hurhurhur, Inc.",
        "PURPOSE_NM": "Service_Default",
        "VIRT_TYPE_DESC": "Para Virtualization",
        "SERVER_STATUS_MSG": "VM running",
        "VCPU_CNT": "2",
        "MEM_SIZE_MB": "1024",
        "VNIC_CNT": "1",
        "OS_NAME": "CentOS_6.4_en_64"
      },
      {
        "@SVC_ID": "7",
        "ID": "VMSPE0000000093",
        "VM_ALIAS": "CV00900000093",
        "VM_OPER_DESC": "Reboot",
        "MACHIN_STATUS_DESC": "[150749]success:virtual machine reboot",
        "USVC_DESC": "7/Running, No Change r/hurhurhur, Inc.",
        "PURPOSE_NM": "Service_Default",
        "VIRT_TYPE_DESC": "Para Virtualization",
        "SERVER_STATUS_MSG": "VM running",
        "VCPU_CNT": "1",
        "MEM_SIZE_MB": "2048",
        "VNIC_CNT": "1",
        "OS_NAME": "Gentoo _2011-0 _en_64"
      },
      {
        "@SVC_ID": "7",
        "ID": "VMSPE0000000096",
        "VM_ALIAS": "CV00900000096",
        "VM_OPER_DESC": "Vm Initialization",
        "MACHIN_STATUS_DESC": "[163023]success:virtual machine running",
        "USVC_DESC": "7/Running, No Change r/hurhurhur, Inc.",
        "PURPOSE_NM": "Service_Default",
        "VIRT_TYPE_DESC": "Para Virtualization",
        "SERVER_STATUS_MSG": "VM running",
        "VCPU_CNT": "2",
        "MEM_SIZE_MB": "1024",
        "VNIC_CNT": "1",
        "OS_NAME": "OpenSuse_12.1_en_64"
      }
    ]
  }
}

JSON：

{
    COMMON =     {
        CATEGORY = computing;
        "NUM_PER_PAGE" = 0;
        "PAGE_NO" = 0;
        "REQUEST_DATE" = 201410271757;
        "RESULT_CD" = 0000;
        "RESULT_MSG" = SUCCESS;
        "SVC_ID" = 7;
        TARGET = "list(VM)";
    };
    DATA =     {
        "VM_LIST" =         (
                        {
                "@SVC_ID" = 7;
                ID = VMSPE0000000083;
                "MACHIN_STATUS_DESC" = "[150748]success:virtual machine power on";
                "MEM_SIZE_MB" = 1024;
                "OS_NAME" = "CentOS_6.4_en_64";
                "PURPOSE_NM" = "Service_Default";
                "SERVER_STATUS_MSG" = "VM running";
                "USVC_DESC" = "7/Running, No Change r/hurhurhur, Inc.";
                "VCPU_CNT" = 2;
                "VIRT_TYPE_DESC" = "Para Virtualization";
                "VM_ALIAS" = CV00900000083;
                "VM_OPER_DESC" = "Power On";
                "VNIC_CNT" = 1;
            },
                        {
                "@SVC_ID" = 7;
                ID = VMSPE0000000093;
                "MACHIN_STATUS_DESC" = "[150749]success:virtual machine reboot";
                "MEM_SIZE_MB" = 2048;
                "OS_NAME" = "Gentoo _2011-0 _en_64";
                "PURPOSE_NM" = "Service_Default";
                "SERVER_STATUS_MSG" = "VM running";
                "USVC_DESC" = "7/Running, No Change r/hurhurhur, Inc.";
                "VCPU_CNT" = 1;
                "VIRT_TYPE_DESC" = "Para Virtualization";
                "VM_ALIAS" = CV00900000093;
                "VM_OPER_DESC" = Reboot;
                "VNIC_CNT" = 1;
            },
                        {
                "@SVC_ID" = 7;
                ID = VMSPE0000000096;
                "MACHIN_STATUS_DESC" = "[163023]success:virtual machine running";
                "MEM_SIZE_MB" = 1024;
                "OS_NAME" = "OpenSuse_12.1_en_64";
                "PURPOSE_NM" = "Service_Default";
                "SERVER_STATUS_MSG" = "VM running";
                "USVC_DESC" = "7/Running, No Change r/hurhurhur, Inc.";
                "VCPU_CNT" = 2;
                "VIRT_TYPE_DESC" = "Para Virtualization";
                "VM_ALIAS" = CV00900000096;
                "VM_OPER_DESC" = "Vm Initialization";
                "VNIC_CNT" = 1;
            }
        );
    };
}

json 缺少东西！！

这样好吗？？？

【问题讨论】：

你知道NSJSONSerialization吗？
...或者关于谷歌，就此而言？
请检查编辑，谢谢
您的 JSON 已成功解析为 NSDictionary。您在控制台中看到的只是 NSDictionary 的 -description（字符串表示形式），它看起来不像 JSON。

标签： ios arrays json parsing dictionary

【解决方案1】：

首先将上面的字符串存储在数组中，然后您可以使用以下将其转换为jsonobject

[NSJSONSerialization JSONObjectWithData:[yourArray dataUsingEncoding:NSUTF8StringEncoding] options:0 error:NULL]

【讨论】：

【解决方案2】：

您可以使用称为 NSJSONSerialization 的内置 iOS 功能将 NSString 转换为 Json 格式。为此，您必须将 NSString 转换为 NSData。

// jsonString = your string
NSError *err;
NSData *data = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
id objectChecker = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&err];

if ([objectChecker isKindOfClass:[NSArray class]])
{
    //your object is NSArray.
}
else if([objectChecker isKindOfClass:[NSDictionary class]])
{
    //your object is NSDictionary.
}
else 
{
    //your string doesn't contain proper json format.
}

也许这会对你有所帮助。 :)

【讨论】：