html jsf ajax blur,JSF Ajax请求中的异常处理

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OmniFaces FullAjaxExceptionHandler展示柜中充实了这个问题。基本上，您需要创建一个定制，ExceptionHandler因为标准JSF不会提供一个定制的定制(至少不是明智的选择)。在其中，您将可以接触Exception引起所有麻烦的实例。这是一个启动示例：public class YourExceptionHandler extends ExceptionHandlerWrapper {    private ExceptionHandler wrapped;    public YourExceptionHandler(ExceptionHandler wrapped) {        this.wrapped = wrapped;    }    @Override    public void handle() throws FacesException {        FacesContext facesContext = FacesContext.getCurrentInstance();        for (Iterator iter = getUnhandledExceptionQueuedEvents().iterator(); iter.hasNext();) {            Throwable exception = iter.next().getContext().getException(); // There it is!            // Now do your thing with it. This example implementation merely prints the stack trace.            exception.printStackTrace();            // You could redirect to an error page (bad practice).            // Or you could render a full error page (as OmniFaces does).            // Or you could show a FATAL faces message.            // Or you could trigger an oncomplete script.            // etc..        }        getWrapped().handle();    }    @Override    public ExceptionHandler getWrapped() {        return wrapped;    }}为了使其运行，请ExceptionHandlerFactory如下创建一个自定义：public class YourExceptionHandlerFactory extends ExceptionHandlerFactory {    private ExceptionHandlerFactory parent;    public YourExceptionHandlerFactory(ExceptionHandlerFactory parent) {        this.parent = parent;    }    @Override    public ExceptionHandler getExceptionHandler() {        return new YourExceptionHandler(parent.getExceptionHandler());    }}需要进行以下注册faces-config.xml：    com.example.YourExceptionHandlerFactory