遍历xml循环节点

╰半橙微兮° 2021-12-14 15:55 357阅读 0赞

public void analysisXML() throws DocumentException { 
            SAXReader saxread = new SAXReader();
            File xmlFile = new File("idcMonitor.xml");
            if (xmlFile.exists()) { 
                Document document = saxread.read(xmlFile);// 读取XML文件
                List<Element> houseMonitorList = document.selectNodes("//idcMonitor/houseMonitor"); //找到位于idcMonitor下的houseMonitor节点
                for (int i = 0; i < houseMonitorList.size(); i++) { 
                    Element houseMonitor=houseMonitorList.get(i);
                    Element id=(Element) houseMonitor.selectSingleNode("id"); //获得houseMonitor节点下的id值
                    System.out.println(id.getName()+" "+id.getTextTrim());
                    Element ip=(Element) houseMonitor.selectSingleNode("ip"); //获得houseMonitor节点下的ip值
                    System.out.println(ip.getName()+" "+ip.getTextTrim());
                    Element port=(Element) houseMonitor.selectSingleNode("port"); //获得houseMonitor节点下的port值
                    System.out.println(port.getName()+" "+port.getTextTrim());
                    Element domain=(Element) houseMonitor.selectSingleNode("domain"); //获得houseMonitor节点下的domain值
                    System.out.println(domain.getName()+" "+domain.getTextTrim());
                    Element serviceType=(Element) houseMonitor.selectSingleNode("serviceType"); //获得houseMonitor节点下的serviceType值
                    System.out.println(serviceType.getName()+" "+serviceType.getTextTrim());
                    Element firstFound=(Element) houseMonitor.selectSingleNode("firstFound"); //获得houseMonitor节点下的firstFound值
                    System.out.println(firstFound.getName()+" "+firstFound.getTextTrim());
                    Element lastFound=(Element) houseMonitor.selectSingleNode("lastFound"); //获得houseMonitor节点下的lastFound值
                    System.out.println(lastFound.getName()+" "+lastFound.getTextTrim());
                    Element illegalInfo=(Element)houseMonitor.selectSingleNode("illegalInfo");//获得houseMonitor节点下的illegalInfo值
                    Iterator<Element> illegalInfoIterator=illegalInfo.elementIterator();
                    while(illegalInfoIterator.hasNext())
                    { 
                        Element temporary=illegalInfoIterator.next();
                        System.out.println(temporary.getName()+" "+temporary.getTextTrim());
                    }
                    Element ipInfo=(Element)houseMonitor.selectSingleNode("ipInfo");//获得houseMonitor节点下的ipInfo值
                    Iterator<Element> ipInfoIterator=ipInfo.elementIterator();
                    while(ipInfoIterator.hasNext())
                    { 
                        Element temporary=ipInfoIterator.next();
                        System.out.println(temporary.getName()+" "+temporary.getTextTrim());
                    }
                     
                    System.out.println("---------------------");
                }
            }
        }

这里使用了Dom4J的selectNodes()和selectSingleNode()还有迭代elementIterator()方法；

selectNodes()方法是指定节点，注意这后面的是有"s"的；

List houseMonitorList = document.selectNodes("//idcMonitor/houseMonitor"); //找到位于idcMonitor下的houseMonitor节点  
selectSingleNode()方法是获得单个节点的，后上面的selectNodes()方法是相对的

Element illegalInfo=(Element)houseMonitor.selectSingleNode(“illegalInfo”);//获得houseMonitor节点下的illegalInfo值  
elementIterator()方法是迭代这个节点下面的节点，但是如果这个迭代之后的节点还有节点，这个迭代器是不会进入的，也就是这个迭代器只会进入一层。

Element illegalInfo=(Element)houseMonitor.selectSingleNode("illegalInfo");//获得houseMonitor节点下的illegalInfo值
                    Iterator<Element> illegalInfoIterator=illegalInfo.elementIterator();
                    while(illegalInfoIterator.hasNext())
                    { 
                        Element temporary=illegalInfoIterator.next();
                        System.out.println(temporary.getName()+" "+temporary.getTextTrim());
                    }

最后看看上面执行的结果：  
id 123  
ip 10.2.45.123  
port 100  
domain [www.sina.com][]  
serviceType 1  
firstFound 2013-08-21 12:33:22  
lastFound 2013-08-21 13:00:00  
illegalType 1  
currentState 1  
user admin  
icpError 0

--------------------

id 456  
ip 10.2.45.456  
port 200  
domain [www.baidu.com][]  
serviceType 3  
firstFound 2013-08-29 12:33:22  
lastFound 2013-08-30 13:00:00  
illegalType 2  
currentState 2  
user admin2  
icpError 1  
regError 2  
regDomain [www.ambimmort.com][]

原始xml:

<?xml version="1.0" encoding="UTF-8"?>
    <idcMonitor>
        <commandId>201020000000169282</commandId>
        <idcId>1019</idcId>
        <monitorState>1</monitorState>
        <houseMonitor>
            <id>123</id>
            <ip>10.2.45.123</ip>
            <port>100</port>
            <domain>www.sina.com</domain>
            <serviceType>1</serviceType>
            <firstFound>2013-08-21 12:33:22</firstFound>
            <lastFound>2013-08-21 13:00:00</lastFound>
            <illegalInfo>
                <illegalType>1</illegalType>
                <currentState>1</currentState>
                <user>admin</user>
            </illegalInfo>
            <ipInfo>
                <icpError>0</icpError>
                <regError>1</regError>
                <regDomain>www.baidu.com</regDomain>
            </ipInfo>
        </houseMonitor>
        <houseMonitor>
            <id>456</id>
            <ip>10.2.45.456</ip>
            <port>200</port>
            <domain>www.baidu.com</domain>
            <serviceType>3</serviceType>
            <firstFound>2013-08-29 12:33:22</firstFound>
            <lastFound>2013-08-30 13:00:00</lastFound>
            <illegalInfo>
                <illegalType>2</illegalType>
                <currentState>2</currentState>
                <user>admin2</user>
            </illegalInfo>
            <ipInfo>
                <icpError>1</icpError>
                <regError>2</regError>
                <regDomain>www.ambimmort.com</regDomain>
            </ipInfo>
        </houseMonitor>
        <timeStamp>2013-08-22 12:57:13</timeStamp>
    </idcMonitor>

[www.sina.com]: http://www.sina.com
[www.baidu.com]: http://www.baidu.com
[www.ambimmort.com]: http://www.ambimmort.com