小编Mar*_*tin的帖子

我想控制哪个按键属于哪个按键Jcomponent.我甚至想知道如何删除与a关联的默认击键,Jcomponent并将其替换为其他喜欢的击键.

我按照这个oracle 教程,它给出了一个JButton的例子,我尝试了它并且它工作正常,但是当我用JComboBox尝试它时它不起作用!

我试图删除SPACE密钥,这是阻止JComponent响应SPACE按下

我用这段代码删除了SPACE密钥:

firstButton.getInputMap().put(KeyStroke.getKeyStroke("SPACE"), "none");

JComboBox也是一样

sizesComboBox.getInputMap().put(KeyStroke.getKeyStroke("SPACE"), "none");

但是不起作用,它(JComboBox)仍然响应SPACE密钥

为此firstButton,我删除了SPACE印刷机的效果; 我添加了键F,所以firstButton当你按下F键盘上的键时,按下它,蚂蚁不响应SPACE(意图).请注意,F即使firstButton没有焦点也会发生按下(JComponent.WHEN_IN_FOCUSED_WINDOW)

这是一个显示我的示例的SSCCE代码:
注意:我故意没有将上面的代码行添加到第二个按钮"secondButton",所以它仍然SPACE默认响应.

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.*;

public class KeyStrokeTest extends JPanel
{

    JPanel widgetPanel;
    JPanel textAreaPanel;
    JButton firstButton;
    JButton secondButton;
    JTextArea textArea;
    JComboBox<Integer> sizesComboBox;

    public …

我试图在特定字段上使用javax/hibernate自定义验证,但我收到以下错误:

javax.validation.ConstraintDefinitionException: HV000074: com.hertz.digital.hertzrac.model.Code contains Constraint annotation, but does not contain a payload parameter.
    at org.hibernate.validator.internal.metadata.core.ConstraintHelper.assertPayloadParameterExists(ConstraintHelper.java:427) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.core.ConstraintHelper.isConstraintAnnotation(ConstraintHelper.java:407) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.findConstraintAnnotations(AnnotationMetaDataProvider.java:582) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.findConstraints(AnnotationMetaDataProvider.java:535) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.findPropertyMetaData(AnnotationMetaDataProvider.java:234) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getFieldMetaData(AnnotationMetaDataProvider.java:227) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.retrieveBeanConfiguration(AnnotationMetaDataProvider.java:137) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getBeanConfiguration(AnnotationMetaDataProvider.java:125) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getBeanConfigurationForHierarchy(AnnotationMetaDataProvider.java:108) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.BeanMetaDataManager.createBeanMetaData(BeanMetaDataManager.java:203) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.BeanMetaDataManager.getOrCreateBeanMetaData(BeanMetaDataManager.java:231) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.metadata.BeanMetaDataManager.isConstrained(BeanMetaDataManager.java:174) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:194) ~[hibernate-validator-5.3.5.Final.jar:5.3.5.Final]
    at org.springframework.validation.beanvalidation.SpringValidatorAdapter.validate(SpringValidatorAdapter.java:118) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
    at org.springframework.boot.autoconfigure.web.WebMvcValidator.validate(WebMvcValidator.java:69) ~[spring-boot-autoconfigure-1.5.4.RELEASE.jar:1.5.4.RELEASE]
    at org.springframework.validation.DataBinder.validate(DataBinder.java:891) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
    at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.validateIfApplicable(ModelAttributeMethodProcessor.java:168) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]
    at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:115) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]
    at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]
    at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:158) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:128) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE] …