public void loadSettings() { try { File inputFile = new File("data.xml"); DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance(); DocumentBuilder dBuilder = dbFactory.newDocumentBuilder(); Document doc = dBuilder.parse(inputFile); doc.getDocumentElement().normalize(); NodeList nList = doc.getElementsByTagName("Setting"); for (int temp = 0; temp < nList.getLength(); temp++) { Node nNode = nList.item(temp); if (nNode.getNodeType() == Node.ELEMENT_NODE) { Element eElement = (Element) nList.item(temp); NodeList VariableName = eElement.getElementsByTagName("VariableName"); NodeList VariableValue = eElement.getElementsByTagName("VariableValue"); System.out.println(VariableName.item(0).getTextContent()); if (VariableName.item(0).hasChildNodes()) { }// txtBookmarkUrl.setText(bookMarkUrl); } } } catch (Exception e) { e.printStackTrace(); } }我想創建一個函數，在設置元素中獲取 xml 的第二部分。我希望該函數返回一個結果，以便在 swing GUI 啟動時將其分配給文本字段默認值。該函數應該使用“isDecaptcher”變量名并返回“0”變量值。<Bookmark> <Setting> <VariableName>isDeathbycaptcha</VariableName> <VariableValue>0</VariableValue> </Setting> <Setting> <VariableName>isDecaptcher</VariableName> <VariableValue>0</VariableValue> </Setting> <Setting> <VariableName>isExpertdecoders</VariableName> <VariableValue>0</VariableValue> </Setting> <Setting> <VariableName>ManualCaptcha</VariableName> <VariableValue>1</VariableValue> </Setting></Bookmark>
2 回答
慕斯709654
TA貢獻1840條經驗 獲得超5個贊
public void loadSettings(String variableName) {
try {
File inputFile = new File("data.xml");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(inputFile);
doc.getDocumentElement().normalize();
NodeList nList = doc.getElementsByTagName("Setting");
for (int temp = 0; temp < nList.getLength(); temp++) {
Node nNode = nList.item(temp);
if (nNode.getNodeType() == Node.ELEMENT_NODE) {
Element eElement = (Element) nList.item(temp);
NodeList VariableName = eElement.getElementsByTagName("VariableName");
NodeList VariableValue = eElement.getElementsByTagName("VariableValue");
if (VariableName.item(0).getTextContent().equalsIgnoreCase(variableName)) {
String txtBookmarkUrlValue = VariableValue.item(0).getLastChild().getTextContent();
System.out.println(txtBookmarkUrlValue);
txtBookmarkUrl.setText(txtBookmarkUrlValue);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
這行得通，但是如果您有更可靠的答案，您可以分享。
慕桂英3389331
TA貢獻2036條經驗 獲得超8個贊
首先創建一個代表您的設置的對象。案例是在整個應用程序中重用它的值。我假設您一開始只會使用一次，并且設置不會改變。單例模式適合那里。
final class Settings{
private static volatile Settings instance = null;
private boolean _isDeathByCaptcha;
private boolean _manualCaptcha;
...
//getters & setters
public boolean isDeathByCaptcha(){
return _isDeathByCaptcha;
}
public void setIsDeathByCaptcha(boolean isDeathByCaptcha){
this._isDeathByCaptcha = isDeathByCaptcha;
}
private Settings(){}
public static Settings getInstance(){
if(instance == null){
synchronized (Settings.class) {
if (instance == null) {
instance = new Settings();
}
}
}
return instance;
}
}
之后，您可以致電Settings.getInstance().isDeathByCaptcha();獲取您的價值。當然你需要用 setter 更早地設置它。
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