我正在努力记录一个人的姓名，得分等。
我尝试编译时遇到大量错误？也许我只是错过了一些东西，但看起来对我来说，请帮助。非常感谢你！
private void scoreButtonActionPerformed(java.awt.event.ActionEvent evt) {
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(new File("scores.xml"));
doc.getDocumentElement().normalize();
System.out.println("Root element of the doc is "+ doc.getDocumentElement().getNodeName());
NodeList listOfPlayers = doc.getElementsByTagName("player");
int totalPersons = listOfPlayers.getLength();
System.out.println("Total number of people: "+ totalPersons);
for (int s = 0; s<listOfPlayers.getLength(); s++) {
Node firstPersonNode = listOfPlayers.item(s);
if (firstPersonNode.getNodeType() == Node.ELEMENT_NODE) {
Element firstPersonElement = (Element) firstPersonNode;
NodeList firstNameList = firstPersonElement.getElementsByTagName("first");
Element firstNameElement = (Element) firstNameList.item(0);
NodeList textFNList = firstNameElement.getChildNodes();
System.out.println("First Name: " + ((Node)textFNList.item(0)).getNodeValue().trim());
NodeList lastNameList = firstPersonElement.getElementsByTagName("last");
Element lastNameElement = (Element)lastNameList.item(0);
NodeList textLNList = lastNameElement.getChildNodes();
System.out.println("Money: " + ((Node)textLNList.item(0)).getNodeValue().trim());
NodeList ageList = firstPersonElement.getElementsByTagName("age");
Element ageElement = (Element)ageList.item(0);
NodeList textAgeList = ageElement.getChildNodes();
System.out.println("Age: " + ((Node)textAgeList.item(0)).getNodeValue().trim());
}
} catch(SAXParseException err) {
}
}
这是scores.xml文件：
<scores>
<player>
<name> Sam Moeza </name>
<money> 100 </money>
<age> 22 </age>
</player>
<player>
<name> Larry Hoover </name>
<money> 100000 </money>
<age> 55 </age>
</player>
</scores>
这是错误：
Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: Uncompilable source code - unreported exception javax.xml.parsers.ParserConfigurationException; must be caught or declared to be thrown
at casinoroulette.CasinoRouletteView.scoreButtonActionPerformed(CasinoRouletteView.java:327)
at casinoroulette.CasinoRouletteView.access$1200(CasinoRouletteView.java:24)
at casinoroulette.CasinoRouletteView$8.actionPerformed(CasinoRouletteView.java:173)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
答案 0 :(得分：2)
让我们从显而易见的......
开始您在}或if之后错过了结束for ...
try {
//...
for (int s = 0; s<listOfPlayers.getLength(); s++) {
Node firstPersonNode = listOfPlayers.item(s);
if (firstPersonNode.getNodeType() == Node.ELEMENT_NODE) {
//...
//.. nothing here?
}
} catch(SAXParseException err) {
}
然后转到你需要扩展try-catch来处理javax.xml.parsers.ParserConfigurationException和java.io.IOException
例如......
try {
//...
for (int s = 0; s<listOfPlayers.getLength(); s++) {
Node firstPersonNode = listOfPlayers.item(s);
if (firstPersonNode.getNodeType() == Node.ELEMENT_NODE) {
//...
} // Fix me
}
} catch (ParserConfigurationException | SAXException | IOException ex) {
// Don't forget to do something with your exception, like
// log it or show and error message dialog
ex.printStackTrace();
}
如果您使用的是Java 7+，您可以使用上面演示的多捕获，否则，您需要单独捕获每个捕获...
您可能需要花一些时间阅读Exceptions trail以获取更多信息