使用 TBXML 解析 XML 的根元素

【问题标题】：Parsing the Root Element of XML with TBXML使用 TBXML 解析 XML 的根元素
【发布时间】：2013-07-10 11:57:31
【问题描述】：

目前我在使用 TBXML 解析 XML 服务时遇到问题。

目前....我正在这样做：

TBXML *configTBXML = [[TBXML alloc] initWithXMLData:[request responseData]];
TBXMLElement *root = configTBXML.rootXMLElement;
TBXMLElement *cddDataElement = [TBXML childElementNamed:@"data" parentElement:root];

NSMutableArray *anArray = [[NSMutableArray alloc] init];


if ([TBXML valueOfAttributeNamed:@"timezone" forElement:cddDataElement]) {

    NSString *key = [TBXML valueOfAttributeNamed:@"timezone" forElement:cddDataElement];
    [anArray addObject:key];
}

所以我注意到.. 在 XML 文件中，确实没有根...

<data timezone="US/Pacific-New-GMT-8" dst="1" ts="11-07-13 19:08:39" time="11-07-13 19:08" sun="DAY" weblanguage="ENGLISH" datalivequeue_start="0" datalivequeue_stop="0" datalivequeue_cnt="0" alarmsqueue_first="226" alarmsqueue_last="51" dhcpstatus="6" gateway="OK" upgrade_portal="OK" data_portal="ERROR" msgdatalive="564" upgrequests="343">
<cdd macrf="00:12:4B:00:02:8A:E0:14" sn="764040" countryselected="2" countryname="USA 208V-60Hz" idmodel="764040-3M60-1513" pout_kW="0.0000" pout_W="0.00" etot_Wh=" 0.00" etot_kWh="0.000" co2_t=" 0.00" status="WARNING"><edd sn="957188" pn="-3L03-" type="edd" macrf="00:12:4B:00:02:6A:D6:27" wy="0413" x="1" y="1" fwmicro="0000" p1_ids="0000" fwdsp="0000" p1_idi="0000" fwrf="000" Etot_Wh=" 0.00" Etot_kWh="0.000" Vout_V="0.00" Iout_A="0.000" Pout_W="0.00" Pout_kW="0.0000" Freq_Hz="0.00" Vin_V="0.00" Tdsp_degC="0.00" Tmos_degC="0.00" Pin_W="n.a" Pin_kW="n.a" Iin_A="n.a" model="n.a" eddmid="n.a" cddid="n.a" modeldesc="MICRO-0.3" invstat="START-UP" booststat="START-UP" alarmstat="0" rssi="0" rssizero="0" rssicnt="0" rssiavg="0" msgcnt="0" samples="15" ts="01-01-00 00:00:00" dspalarm="0x0000" mcualarm="0x0000" mcuwarning="0x0000" CS_crc="0x0000"/><edd sn="xxxxxx" pn="xxxxxx" type="edd" macrf="00:12:4B:00:02:6F:01:2C" wy="xxxx" x="1" y="1" fwmicro="0000" p1_ids="0000" fwdsp="0000" p1_idi="0000" fwrf="000" Etot_Wh=" 0.00" Etot_kWh="0.000" Vout_V="0.00" Iout_A="0.000" Pout_W="0.00" Pout_kW="0.0000" Freq_Hz="0.00" Vin_V="0.00" Tdsp_degC="0.00" Tmos_degC="0.00" Pin_W="n.a" Pin_kW="n.a" Iin_A="n.a" model="n.a" eddmid="n.a" cddid="n.a" modeldesc="MICRO-0.25" invstat="START-UP" booststat="START-UP" alarmstat="0" rssi="0" rssizero="0" rssicnt="0" rssiavg="0" msgcnt="0" samples="15" ts="01-01-00 00:00:00" dspalarm="0x0000" mcualarm="0x0000" mcuwarning="0x0000" CS_crc="0x0000"/><edd sn="xxxxxx" pn="xxxxxx" type="edd" macrf="00:12:4B:00:02:6F:14:5A" wy="xxxx" x="1" y="1" fwmicro="0000" p1_ids="0000" fwdsp="0000" p1_idi="0000" fwrf="000" Etot_Wh=" 0.00" Etot_kWh="0.000" Vout_V="0.00" Iout_A="0.000" Pout_W="0.00" Pout_kW="0.0000" Freq_Hz="0.00" Vin_V="0.00" Tdsp_degC="0.00" Tmos_degC="0.00" Pin_W="n.a" Pin_kW="n.a" Iin_A="n.a" model="n.a" eddmid="n.a" cddid="n.a" modeldesc="MICRO-0.25" invstat="START-UP" booststat="START-UP" alarmstat="0" rssi="0" rssizero="0" rssicnt="0" rssiavg="0" msgcnt="0" samples="15" ts="01-01-00 00:00:00" dspalarm="0x0000" mcualarm="0x0000" mcuwarning="0x0000" CS_crc="0x0000"/></cdd></data>

对于格式可怕的 xml 感到抱歉，但如果您注意到......文件的标题是......好吧......对我来说是必不可少的提取......

现在如果我使用：

TBXMLElement *cddDataElement = [TBXML childElementNamed:@"data" parentElement:root];

我遇到了崩溃...我明白为什么我正在访问 PARENT 元素，而子元素不存在...

所以我的问题是，如何访问根元素的值/键？

【问题讨论】：

    标签： iphone ios objective-c xml tbxml


    【解决方案1】：

    问题已解决......我在 TBXML 文档中找到了这个函数，它实际上提取了每个元素属性和属性值，非常简单......

    使用一点 C 代码...

    - (void) traverseElement:(TBXMLElement *)element {
    do {
        // Display the name of the element
        NSLog(@"%@",[TBXML elementName:element]);

        // Obtain first attribute from element
        TBXMLAttribute * attribute = element->firstAttribute;

        // if attribute is valid
        while (attribute) {
            // Display name and value of attribute to the log window
            NSLog(@"%@->%@ = %@",  [TBXML elementName:element],
                  [TBXML attributeName:attribute],
                  [TBXML attributeValue:attribute]);

            // Obtain the next attribute
            attribute = attribute->next;

        }

        // if the element has child elements, process them
        if (element->firstChild)
            [self traverseElement:element->firstChild];

        // Obtain next sibling element
    } while ((element = element->nextSibling));
}

    如您所见，实际上发生了很多......递归、c 指针等。 我这样调用这个方法：

        TBXML *configTBXML = [[TBXML alloc] initWithXMLData:[request responseData]];
    TBXMLElement *root = configTBXML.rootXMLElement;
    if (root) {
        [self traverseElement:root];
    }

    这给出了以下输出：

    2013-07-12 09:30:29.836 PowerOneApp[77609:3c07] data
2013-07-12 09:30:29.837 PowerOneApp[77609:3c07] data->timezone = US/Pacific-New-GMT-8
2013-07-12 09:30:29.837 PowerOneApp[77609:3c07] data->dst = 1
2013-07-12 09:30:29.838 PowerOneApp[77609:3c07] data->ts = 12-07-13 09:30:32
2013-07-12 09:30:29.838 PowerOneApp[77609:3c07] data->time = 12-07-13 09:30
2013-07-12 09:30:29.838 PowerOneApp[77609:3c07] data->sun = DAY
2013-07-12 09:30:29.838 PowerOneApp[77609:3c07] data->weblanguage = ENGLISH
2013-07-12 09:30:29.838 PowerOneApp[77609:3c07] data->datalivequeue_start = 0
2013-07-12 09:30:29.838 PowerOneApp[77609:3c07] data->datalivequeue_stop = 0
2013-07-12 09:30:29.839 PowerOneApp[77609:3c07] data->datalivequeue_cnt = 0
2013-07-12 09:30:29.839 PowerOneApp[77609:3c07] data->alarmsqueue_first = 229
2013-07-12 09:30:29.839 PowerOneApp[77609:3c07] data->alarmsqueue_last = 51
2013-07-12 09:30:29.839 PowerOneApp[77609:3c07] data->dhcpstatus = 6
2013-07-12 09:30:29.839 PowerOneApp[77609:3c07] data->gateway = OK
2013-07-12 09:30:29.839 PowerOneApp[77609:3c07] data->upgrade_portal = OK
2013-07-12 09:30:29.840 PowerOneApp[77609:3c07] data->data_portal = ERROR
2013-07-12 09:30:29.840 PowerOneApp[77609:3c07] data->msgdatalive = 564
2013-07-12 09:30:29.841 PowerOneApp[77609:3c07] data->upgrequests = 357
2013-07-12 09:30:29.841 PowerOneApp[77609:3c07] cdd
2013-07-12 09:30:29.841 PowerOneApp[77609:3c07] cdd->macrf = 00:12:4B:00:02:8A:E0:14
2013-07-12 09:30:29.841 PowerOneApp[77609:3c07] cdd->sn = 764040
2013-07-12 09:30:29.841 PowerOneApp[77609:3c07] cdd->countryselected = 2
2013-07-12 09:30:29.842 PowerOneApp[77609:3c07] cdd->countryname = USA 208V-60Hz
2013-07-12 09:30:29.842 PowerOneApp[77609:3c07] cdd->idmodel = 764040-3M60-1513
2013-07-12 09:30:29.842 PowerOneApp[77609:3c07] cdd->pout_kW = 0.0000
2013-07-12 09:30:29.842 PowerOneApp[77609:3c07] cdd->pout_W = 0.00
2013-07-12 09:30:29.843 PowerOneApp[77609:3c07] cdd->etot_Wh =  0.00
2013-07-12 09:30:29.843 PowerOneApp[77609:3c07] cdd->etot_kWh = 0.000
2013-07-12 09:30:29.843 PowerOneApp[77609:3c07] cdd->co2_t =  0.00
2013-07-12 09:30:29.843 PowerOneApp[77609:3c07] cdd->status = ALARM
2013-07-12 09:30:29.843 PowerOneApp[77609:3c07] edd
2013-07-12 09:30:29.844 PowerOneApp[77609:3c07] edd->sn = 957188
2013-07-12 09:30:29.844 PowerOneApp[77609:3c07] edd->pn = -3L03-
2013-07-12 09:30:29.844 PowerOneApp[77609:3c07] edd->type = edd
2013-07-12 09:30:29.844 PowerOneApp[77609:3c07] edd->macrf = 00:12:4B:00:02:6A:D6:27
2013-07-12 09:30:29.845 PowerOneApp[77609:3c07] edd->wy = 0413
2013-07-12 09:30:29.845 PowerOneApp[77609:3c07] edd->x = 1
2013-07-12 09:30:29.845 PowerOneApp[77609:3c07] edd->y = 1
2013-07-12 09:30:29.845 PowerOneApp[77609:3c07] edd->fwmicro = 0000
2013-07-12 09:30:29.846 PowerOneApp[77609:3c07] edd->p1_ids = 0000
2013-07-12 09:30:29.846 PowerOneApp[77609:3c07] edd->fwdsp = 0000
2013-07-12 09:30:29.846 PowerOneApp[77609:3c07] edd->p1_idi = 0000
2013-07-12 09:30:29.846 PowerOneApp[77609:3c07] edd->fwrf = 000
2013-07-12 09:30:29.846 PowerOneApp[77609:3c07] edd->Etot_Wh =  0.00
2013-07-12 09:30:29.847 PowerOneApp[77609:3c07] edd->Etot_kWh = 0.000
2013-07-12 09:30:29.847 PowerOneApp[77609:3c07] edd->Vout_V = 0.00
2013-07-12 09:30:29.847 PowerOneApp[77609:3c07] edd->Iout_A = 0.000
2013-07-12 09:30:29.847 PowerOneApp[77609:3c07] edd->Pout_W = 0.00
2013-07-12 09:30:29.848 PowerOneApp[77609:3c07] edd->Pout_kW = 0.0000
2013-07-12 09:30:29.848 PowerOneApp[77609:3c07] edd->Freq_Hz = 0.00
2013-07-12 09:30:29.848 PowerOneApp[77609:3c07] edd->Vin_V = 0.00
2013-07-12 09:30:29.848 PowerOneApp[77609:3c07] edd->Tdsp_degC = 0.00
2013-07-12 09:30:29.849 PowerOneApp[77609:3c07] edd->Tmos_degC = 0.00
2013-07-12 09:30:29.849 PowerOneApp[77609:3c07] edd->Pin_W = n.a
2013-07-12 09:30:29.849 PowerOneApp[77609:3c07] edd->Pin_kW = n.a
2013-07-12 09:30:29.849 PowerOneApp[77609:3c07] edd->Iin_A = n.a
2013-07-12 09:30:29.849 PowerOneApp[77609:3c07] edd->model = n.a
2013-07-12 09:30:29.850 PowerOneApp[77609:3c07] edd->eddmid = n.a
2013-07-12 09:30:29.850 PowerOneApp[77609:3c07] edd->cddid = n.a
2013-07-12 09:30:29.850 PowerOneApp[77609:3c07] edd->modeldesc = MICRO-0.3
2013-07-12 09:30:29.850 PowerOneApp[77609:3c07] edd->invstat = START-UP
2013-07-12 09:30:29.851 PowerOneApp[77609:3c07] edd->booststat = START-UP
2013-07-12 09:30:29.851 PowerOneApp[77609:3c07] edd->alarmstat = 1
2013-07-12 09:30:29.851 PowerOneApp[77609:3c07] edd->rssi = 0
2013-07-12 09:30:29.851 PowerOneApp[77609:3c07] edd->rssizero = 0
2013-07-12 09:30:29.851 PowerOneApp[77609:3c07] edd->rssicnt = 0
2013-07-12 09:30:29.852 PowerOneApp[77609:3c07] edd->rssiavg = 0
2013-07-12 09:30:29.852 PowerOneApp[77609:3c07] edd->msgcnt = 0
2013-07-12 09:30:29.852 PowerOneApp[77609:3c07] edd->samples = 15
2013-07-12 09:30:29.852 PowerOneApp[77609:3c07] edd->ts = 01-01-00 00:00:00
2013-07-12 09:30:29.853 PowerOneApp[77609:3c07] edd->dspalarm = 0x0000
2013-07-12 09:30:29.853 PowerOneApp[77609:3c07] edd->mcualarm = 0x8000
2013-07-12 09:30:29.853 PowerOneApp[77609:3c07] edd->mcuwarning = 0x0000
2013-07-12 09:30:29.853 PowerOneApp[77609:3c07] edd->CS_crc = 0x0000
2013-07-12 09:30:29.853 PowerOneApp[77609:3c07] edd
2013-07-12 09:30:29.854 PowerOneApp[77609:3c07] edd->sn = xxxxxx
2013-07-12 09:30:29.854 PowerOneApp[77609:3c07] edd->pn = xxxxxx
2013-07-12 09:30:29.854 PowerOneApp[77609:3c07] edd->type = edd
2013-07-12 09:30:29.854 PowerOneApp[77609:3c07] edd->macrf = 00:12:4B:00:02:6F:01:2C
2013-07-12 09:30:29.855 PowerOneApp[77609:3c07] edd->wy = xxxx
2013-07-12 09:30:29.855 PowerOneApp[77609:3c07] edd->x = 1
2013-07-12 09:30:29.855 PowerOneApp[77609:3c07] edd->y = 1
2013-07-12 09:30:29.855 PowerOneApp[77609:3c07] edd->fwmicro = 0000
2013-07-12 09:30:29.856 PowerOneApp[77609:3c07] edd->p1_ids = 0000
2013-07-12 09:30:29.856 PowerOneApp[77609:3c07] edd->fwdsp = 0000
2013-07-12 09:30:29.856 PowerOneApp[77609:3c07] edd->p1_idi = 0000
2013-07-12 09:30:29.856 PowerOneApp[77609:3c07] edd->fwrf = 000
2013-07-12 09:30:29.857 PowerOneApp[77609:3c07] edd->Etot_Wh =  0.00
2013-07-12 09:30:29.857 PowerOneApp[77609:3c07] edd->Etot_kWh = 0.000
2013-07-12 09:30:29.857 PowerOneApp[77609:3c07] edd->Vout_V = 0.00
2013-07-12 09:30:29.857 PowerOneApp[77609:3c07] edd->Iout_A = 0.000
2013-07-12 09:30:29.857 PowerOneApp[77609:3c07] edd->Pout_W = 0.00
2013-07-12 09:30:29.858 PowerOneApp[77609:3c07] edd->Pout_kW = 0.0000
2013-07-12 09:30:29.858 PowerOneApp[77609:3c07] edd->Freq_Hz = 0.00
2013-07-12 09:30:29.858 PowerOneApp[77609:3c07] edd->Vin_V = 0.00
2013-07-12 09:30:29.858 PowerOneApp[77609:3c07] edd->Tdsp_degC = 0.00
2013-07-12 09:30:29.859 PowerOneApp[77609:3c07] edd->Tmos_degC = 0.00
2013-07-12 09:30:29.859 PowerOneApp[77609:3c07] edd->Pin_W = n.a
2013-07-12 09:30:29.859 PowerOneApp[77609:3c07] edd->Pin_kW = n.a
2013-07-12 09:30:29.859 PowerOneApp[77609:3c07] edd->Iin_A = n.a
2013-07-12 09:30:29.859 PowerOneApp[77609:3c07] edd->model = n.a
2013-07-12 09:30:29.860 PowerOneApp[77609:3c07] edd->eddmid = n.a
2013-07-12 09:30:29.860 PowerOneApp[77609:3c07] edd->cddid = n.a
2013-07-12 09:30:29.860 PowerOneApp[77609:3c07] edd->modeldesc = MICRO-0.25
2013-07-12 09:30:29.860 PowerOneApp[77609:3c07] edd->invstat = START-UP
2013-07-12 09:30:29.861 PowerOneApp[77609:3c07] edd->booststat = START-UP
2013-07-12 09:30:29.861 PowerOneApp[77609:3c07] edd->alarmstat = 1
2013-07-12 09:30:29.861 PowerOneApp[77609:3c07] edd->rssi = 0
2013-07-12 09:30:29.861 PowerOneApp[77609:3c07] edd->rssizero = 0
2013-07-12 09:30:29.862 PowerOneApp[77609:3c07] edd->rssicnt = 0
2013-07-12 09:30:29.862 PowerOneApp[77609:3c07] edd->rssiavg = 0
2013-07-12 09:30:29.862 PowerOneApp[77609:3c07] edd->msgcnt = 0
2013-07-12 09:30:29.862 PowerOneApp[77609:3c07] edd->samples = 15
2013-07-12 09:30:29.862 PowerOneApp[77609:3c07] edd->ts = 01-01-00 00:00:00
2013-07-12 09:30:29.863 PowerOneApp[77609:3c07] edd->dspalarm = 0x0000
2013-07-12 09:30:29.863 PowerOneApp[77609:3c07] edd->mcualarm = 0x8000
2013-07-12 09:30:29.863 PowerOneApp[77609:3c07] edd->mcuwarning = 0x0000
2013-07-12 09:30:29.863 PowerOneApp[77609:3c07] edd->CS_crc = 0x0000
2013-07-12 09:30:29.864 PowerOneApp[77609:3c07] edd
2013-07-12 09:30:29.864 PowerOneApp[77609:3c07] edd->sn = xxxxxx
2013-07-12 09:30:29.864 PowerOneApp[77609:3c07] edd->pn = xxxxxx
2013-07-12 09:30:29.864 PowerOneApp[77609:3c07] edd->type = edd
2013-07-12 09:30:29.865 PowerOneApp[77609:3c07] edd->macrf = 00:12:4B:00:02:6F:14:5A
2013-07-12 09:30:29.865 PowerOneApp[77609:3c07] edd->wy = xxxx
2013-07-12 09:30:29.865 PowerOneApp[77609:3c07] edd->x = 1
2013-07-12 09:30:29.865 PowerOneApp[77609:3c07] edd->y = 1
2013-07-12 09:30:29.865 PowerOneApp[77609:3c07] edd->fwmicro = 0000
2013-07-12 09:30:29.866 PowerOneApp[77609:3c07] edd->p1_ids = 0000
2013-07-12 09:30:29.866 PowerOneApp[77609:3c07] edd->fwdsp = 0000
2013-07-12 09:30:29.866 PowerOneApp[77609:3c07] edd->p1_idi = 0000
2013-07-12 09:30:29.866 PowerOneApp[77609:3c07] edd->fwrf = 000
2013-07-12 09:30:29.867 PowerOneApp[77609:3c07] edd->Etot_Wh =  0.00
2013-07-12 09:30:29.867 PowerOneApp[77609:3c07] edd->Etot_kWh = 0.000
2013-07-12 09:30:29.867 PowerOneApp[77609:3c07] edd->Vout_V = 0.00
2013-07-12 09:30:29.867 PowerOneApp[77609:3c07] edd->Iout_A = 0.000
2013-07-12 09:30:29.868 PowerOneApp[77609:3c07] edd->Pout_W = 0.00
2013-07-12 09:30:29.868 PowerOneApp[77609:3c07] edd->Pout_kW = 0.0000
2013-07-12 09:30:29.868 PowerOneApp[77609:3c07] edd->Freq_Hz = 0.00
2013-07-12 09:30:29.868 PowerOneApp[77609:3c07] edd->Vin_V = 0.00
2013-07-12 09:30:29.869 PowerOneApp[77609:3c07] edd->Tdsp_degC = 0.00
2013-07-12 09:30:29.869 PowerOneApp[77609:3c07] edd->Tmos_degC = 0.00
2013-07-12 09:30:29.869 PowerOneApp[77609:3c07] edd->Pin_W = n.a
2013-07-12 09:30:29.869 PowerOneApp[77609:3c07] edd->Pin_kW = n.a
2013-07-12 09:30:29.870 PowerOneApp[77609:3c07] edd->Iin_A = n.a
2013-07-12 09:30:29.870 PowerOneApp[77609:3c07] edd->model = n.a
2013-07-12 09:30:29.870 PowerOneApp[77609:3c07] edd->eddmid = n.a
2013-07-12 09:30:29.870 PowerOneApp[77609:3c07] edd->cddid = n.a
2013-07-12 09:30:29.870 PowerOneApp[77609:3c07] edd->modeldesc = MICRO-0.25
2013-07-12 09:30:29.871 PowerOneApp[77609:3c07] edd->invstat = START-UP
2013-07-12 09:30:29.871 PowerOneApp[77609:3c07] edd->booststat = START-UP
2013-07-12 09:30:29.871 PowerOneApp[77609:3c07] edd->alarmstat = 1
2013-07-12 09:30:29.871 PowerOneApp[77609:3c07] edd->rssi = 0
2013-07-12 09:30:29.872 PowerOneApp[77609:3c07] edd->rssizero = 0
2013-07-12 09:30:29.872 PowerOneApp[77609:3c07] edd->rssicnt = 0
2013-07-12 09:30:29.872 PowerOneApp[77609:3c07] edd->rssiavg = 0
2013-07-12 09:30:29.872 PowerOneApp[77609:3c07] edd->msgcnt = 0
2013-07-12 09:30:29.873 PowerOneApp[77609:3c07] edd->samples = 15
2013-07-12 09:30:29.873 PowerOneApp[77609:3c07] edd->ts = 01-01-00 00:00:00
2013-07-12 09:30:29.873 PowerOneApp[77609:3c07] edd->dspalarm = 0x0000
2013-07-12 09:30:29.873 PowerOneApp[77609:3c07] edd->mcualarm = 0x8000
2013-07-12 09:30:29.874 PowerOneApp[77609:3c07] edd->mcuwarning = 0x0000
2013-07-12 09:30:29.874 PowerOneApp[77609:3c07] edd->CS_crc = 0x0000

    【讨论】：

      猜你喜欢
      • 2011-11-16
      • 2013-03-29
      • 2023-03-13
      • 2013-09-17
      • 1970-01-01
      • 2012-10-28
      • 1970-01-01
      • 2011-10-02
      • 1970-01-01
      相关资源
      最近更新 更多
      热门标签
      Java Python linux javascript Mysql C# Docker 算法 前端 SpringBoot Redis Vue spring 设计模式 .net core .net kubernetes c++ 数据库 数据结构 大数据 js 机器学习 微服务 Android Go 程序员 面试 JVM ASP.net core 云原生 人工智能 后端 PHP git CSS golang k8s Nginx Django mybatis 深度学习 多线程 React 架构 devops 爬虫 云计算 Spring Boot LeetCode