解析Document對象時遇到困難？

我想解析我的Document對象，就像;解析Document對象時遇到困難？

<message> 
<header> 
<messageType>snmp</messageType> 
<sendFrom>localhost</sendFrom> 
<hostName>localhost</hostName> 
<sendTo>192.168.0.15</sendTo> 
<receiverName>receiverHost</receiverName> 
<date>06/10/2011 17:34:55</date> 
</header> 
<body> 
<snmpType>set</snmpType> 
<ip>127.0.0.1</ip> 
<community>public</community> 
<variables> 
    <variableBinding> 
    <variable>TechDive.in</variable> 
    <OID>1.3.6.1.4.1.8072.3.2.10</OID> 
    </variableBinding> 
    <variableBinding> 
    <variable>TechDive.in</variable> 
    <OID>1.3.6.1.4.1.8072.3.2.10</OID> 
    </variableBinding> 
    <variableBinding> 
    <variable>TechDive.in</variable> 
    <OID>1.3.6.1.4.1.8072.3.2.10</OID> 
    </variableBinding> 
    <variableBinding> 
    <variable>TechDive.in</variable> 
    <OID>1.3.6.1.4.1.8072.3.2.10</OID> 
    </variableBinding> 
    </variables> 
    </body> 
</message>

我想所有關閉<variableBinding> S的是下<variables>，我真的會被卡住它，因爲我在XML解析一個小白。

我想寫一個函數是;

public Vector<VariableBinding> getVariables(Document document){ 

    Vector<VariableBinding> variables = new Vector<VariableBinding>(); 

    Element root = document.getRootElement(); 
    Element body = root.getChild("body"); 
    Element oidsElement = body.getChild("variables"); 
    Element variable = oidsElement.getChild("variable"); 

    for (Object currentOidObj : variable.getChildren()) { 

     Element currentOid = (Element) currentOidObj; 
     String oid = currentOid.getText(); 
     Element currentVariable = (Element) currentOidObj; 

     Variable var = new OctetString(currentVariable.getText()); 
     OID oidObj = new OID(oid); 

     VariableBinding v = new VariableBinding(oidObj,var); 
     variables.add(v); 
    } 
    return variables; 
}

你能幫我拿<variableBinding>嗎？

謝謝大家

來源

2011-10-06 Ozer

你需要做的事情喜歡這個：

public Vector<VariableBinding> getVariables(Document document){ 

Vector<VariableBinding> variables = new Vector<VariableBinding>(); 

Element root = document.getRootElement(); 
Element body = root.getChild("body"); 
Element oidsElement = body.getChild("variables"); 

for (Object ovb: oidsElement.getChildren("variableBinding")) { 

    Element vb = (Element) ovb; 
    Variable var = new OctetString(vb.getChild("OID").getText()); 
    OID oidObj = new OID(vb.getChild("variable").getText()); 

    VariableBinding v = new VariableBinding(oidObj,var); 
    variables.add(v); 
} 
return variables; 
}

來源

2011-10-06 15:50:21

聽起來像SAX解析器會更適合您使用。這個博客給出了一個使用SAX解析器來解析XML的簡單例子。

http://www.mkyong.com/java/how-to-read-xml-file-in-java-sax-parser/

---- ----編輯其實，這裏有一個更好的http://cs.au.dk/~amoeller/XML/programming/saxexample.html

來源

2011-10-06 15:49:27

你有使用XPath考慮？

//variableBinding將選擇所有的變量綁定元素。

例如爲：

XPathFactory factory = XPathFactory.newInstance(); 
XPath xpath = factory.newXPath(); 
XPathExpression expr = xpath.compile("//variableBinding"); 

Object result = expr.evaluate(doc, XPathConstants.NODESET); 

NodeList nodes = (NodeList) result; 
for (int i = 0; i < nodes.getLength(); i++) { 
    ... 
}

來源

2011-10-06 15:50:09 vanto

我畏縮每次我看到有人暴力破解他們的方式通過XML時間;讓我瘋狂！ –

解析Document對象時遇到困難？

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