Python-使用Minidom进行xml解析-如何迭代每个并获取该的列表？

如果这是一个基本问题，我深表歉意，但我已经在这个问题上纠缠了一段时间，还没有发现minidom文档是可以理解的。我有一个xml文件：

<?xml version="1.0"?>
<targetConfiguration>




    <virtualMachine>
        <boxNameUppercase>CENTOS65</boxNameUppercase>
        <boxNameLowercase>centos65</boxNameLowercase>
        <memoryMegabytes>2048</memoryMegabytes>
        <numCPUs>2</numCPUs>

        <installLocation>/home/user/VM_deployer_vms/CENTOS65_Auto/</installLocation>
        <diskSpaceGigabytes>10</diskSpaceGigabytes>
        <Vagrantfile>/Vagrantfiles/Vagrantfile.centos65.overwritable</Vagrantfile> 


        <fileToBeSent>
            <source>yaml file on system</source>
            <destination>bamboo agent location</destination>
        </fileToBeSent>

        <fileToBeSent>
            <source>yaml file on system</source>
            <destination>bamboo agent location</destination>
        </fileToBeSent>

        <scriptToBeRanPython>
            <paramaters>-autodetectOS -noPrompt -name</paramaters>          
            <sourceName>......agent_install.py </sourceName>
            <destinationName>SOME LOCATION ON THE MACHINE</destinationName>
        </scriptToBeRanPython>

    </virtualMachine>



    <virtualMachine>
        <boxNameUppercase>CENTOS64</boxNameUppercase>
        <boxNameLowercase>centos64</boxNameLowercase>
        <memoryMegabytes>2048</memoryMegabytes>
        <numCPUs>2</numCPUs>

        <installLocation>/home/user/VM_deployer_vms/CENTOS64_Auto/</installLocation>
        <diskSpaceGigabytes>10</diskSpaceGigabytes>
        <Vagrantfile>/Vagrantfiles/Vagrantfile.centos65.overwritable</Vagrantfile> 

        <fileToBeSent>
            <source>yaml file on system</source>
            <destination>bamboo agent location</destination>
        </fileToBeSent>

        <fileToBeSent>
            <source>yaml file on system</source>
            <destination>bamboo agent location</destination>
        </fileToBeSent>

        <scriptToBeRanPython>
            <paramaters>-autodetectOS -noPrompt -name</paramaters>          
            <sourceName>......agent_install.py </sourceName>
            <destinationName>SOME LOCATION ON THE MACHINE</destinationName>
        </scriptToBeRanPython>

    </virtualMachine>

</targetConfiguration>

如何修改它以使其与上述xml一起工作？我尝试添加一些类似的内容：

                printDebug( "   Adding commands to "+ VM.getBoxName())              
                commandsTagList = vm.getElementsByTagName("virtualMachine")             
                for command in commandsTagList:
                    commandString = command.getElementsByTagName("scriptToBeRanPython")[0].firstChild.nodeValue
                    myTargetVM.commandList.append(commandString)        
                    printDebug( "      added command '" + commandString + "' to "+VM.getBoxName())  

---

但它返回一个空列表。有人能帮我吗？非常感谢。

您必须从sourceName、paramaters标记获取值。请看以下示例：

doc = minidom.parse('data.xml')
commandsTagList = doc.getElementsByTagName("virtualMachine")
for command in commandsTagList:
    scriptToBeRanPython = command.getElementsByTagName("scriptToBeRanPython")[0]
    parameter = scriptToBeRanPython.getElementsByTagName("paramaters")[0].firstChild.nodeValue
    source = scriptToBeRanPython.getElementsByTagName("sourceName")[0].firstChild.nodeValue
    destination = scriptToBeRanPython.getElementsByTagName("destinationName")[0].firstChild.nodeValue
    commandString = source + ' ' + parameter + ' ' + destination
    print commandString

输出：

......agent_install.py  -autodetectOS -noPrompt -name SOME LOCATION ON THE MACHINE
......agent_install.py  -autodetectOS -noPrompt -name SOME LOCATION ON THE MACHINE

---

您好，Vinod，非常感谢您的回答：我想知道getElementsByTagName的节点顺序是否与XML文件相同？据我所知可以，但我想知道你是否有什么意见？我正在考虑用commandToBeRun或其他什么来代替scriptToBeRanPython，显然，按照正确的顺序完成这些任务是很重要的。我不确定我是否正确理解了您的问题。我只能说秩序很重要。

......agent_install.py  -autodetectOS -noPrompt -name SOME LOCATION ON THE MACHINE
......agent_install.py  -autodetectOS -noPrompt -name SOME LOCATION ON THE MACHINE