Java 双重格式验证中的JSpinner

我有一个JFrame作为用户输入表单，它包含许多JSpinner类型的双格式字段

例：

当mySpinnerExample为空（默认值为0）并且用户单击O.K按钮时，我得到了这个错误

她是最棒的

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.math.BigDecimal cannot be cast to java.lang.Double
    at VIEW.ProduitUi.getFormData(ProduitUi.java:530)
    at CONTROLLER.ProduitController.getUiFormData(ProduitController.java:124)
    at CONTROLLER.ProduitController.createProduit(ProduitController.java:106)
    at VIEW.ProduitUi$2.actionPerformed(ProduitUi.java:284)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2346)
    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:6527)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
    at java.awt.Component.processEvent(Component.java:6292)
    at java.awt.Container.processEvent(Container.java:2234)
    at java.awt.Component.dispatchEventImpl(Component.java:4883)
    at java.awt.Container.dispatchEventImpl(Container.java:2292)
    at java.awt.Component.dispatchEvent(Component.java:4705)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4533)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)
    at java.awt.Container.dispatchEventImpl(Container.java:2278)
    at java.awt.Window.dispatchEventImpl(Window.java:2739)
    at java.awt.Component.dispatchEvent(Component.java:4705)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746)
    at java.awt.EventQueue.access$400(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:697)
    at java.awt.EventQueue$3.run(EventQueue.java:691)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
    at java.awt.EventQueue$4.run(EventQueue.java:719)
    at java.awt.EventQueue$4.run(EventQueue.java:717)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:716)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

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如何克服此问题。

堆栈跟踪表明您的软件预期为双精度，但得到的是大十进制

在构建喷丝头NumberModel时，尝试将Double替换为Double。我怀疑java使用了这个构造函数

SpinnerNumberModel(Number value, Comparable minimum, Comparable maximum, Number stepSize)

而不是这个

SpinnerNumberModel(double value, double minimum, double maximum, double stepSize)

（见附件）

所以你的代码应该是

double current = 0.0;
double min = (double) Integer.MIN_VALUE;
double max = (double) Integer.MAX_VALUE;
double step = 0.1;

JSpinner mySpinnerExample = new JSpinner(new SpinnerNumberModel(current, min, max, step))

---

“Double”是一个“数字”，“BigDecimal”也是，但“Double”不是“Double”，尽管两者都有一定的相关性，并且很容易相互分配。

您是否尝试过使用Double.MIN\u值和Double.MAX\u值？也许您需要显示更多代码-您的“OK”按钮执行的操作有什么作用？我得到它的工作没有麻烦，但我使用jSPinel1.StMyMeod（），并将其作为“Pint init”代码插入IDE（NETBeS）。（您可以编辑您的问题）。异常几乎肯定与微调器无关，而是您调用的某个方法，您没有向我们展示。堆栈跟踪将准确地告诉您抛出异常的方法调用和行号。我们不能回答你的问题，直到你告诉我们。我已经更新了完整的stackTrace信息后

double current = 0.0;
double min = (double) Integer.MIN_VALUE;
double max = (double) Integer.MAX_VALUE;
double step = 0.1;

JSpinner mySpinnerExample = new JSpinner(new SpinnerNumberModel(current, min, max, step))