Question

我有摆动应用程序在主窗口，thrue JFileChoser我得到absoluthe文件路径。

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder db = dbf.newDocumentBuilder();
    Document document = db.parse("deklaracja");

基于此路径然后我解析xml文件。

我想在另一个窗口中使用相同的路径，但我不知道该怎么做。现在其他窗口使用我添加到项目总监的文件，名为＆＃34; deklaracja＆＃34;

public void xmladder() throws ParserConfigurationException, TransformerException, SAXException, IOException {Form form = new Form();
String path = form.selFile;

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document document = db.parse(path);

我想在之前的窗口中使用用户在JFileChoser中选择的文件＆＃34; deklaracja＆＃34;。我试图传递变量＆＃34; selFile＆＃34;但我不工作。在第二课我传递变量如下：

Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: URI cannot be null
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:173)
at com.company.NDoctor.xmladder(NDoctor.java:76)
at com.company.NDoctor$2.actionPerformed(NDoctor.java:54)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$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:6516)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6281)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4872)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4698)
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:4698)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:747)
at java.awt.EventQueue.access$300(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:706)
at java.awt.EventQueue$3.run(EventQueue.java:704)
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:720)
at java.awt.EventQueue$4.run(EventQueue.java:718)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:717)
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)

这样就产生了另一个问题，它构建了下一个相同的摆动窗口。

错误日志：

class B extends A {
    x:number
    constructor(x:number) {
        this.x = x
    }
    alwaysReturnSameType():this {
        return new B(this.x + 1) // ERROR: Type 'B' is not assignable to type 'this'.
        // this works, but isn't what I need: return this
    }
}

class C extends B {
    constructor() { super(3); }
    foo() { }
}

let x = new C();
let y = x.alwaysReturnSameType(); // y: C, but it's a B
y.foo(); // fails

你知道怎么做吗？我会很感激任何建议;）

如何将filepath传递给另一个swing窗口

0 个答案: