JSF中未捕获异常处理

问题描述

我正在尝试创建一个过滤器来处理异常（请参阅）

I am trying to create a filter to handle exceptions (see Handling Uncaught Exception in JSF)

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
      try {
          log.info("check filter is running");
            chain.doFilter(request, response);
        } catch (Exception e) {
            log.error("Uncaught exception",e);
            request.setAttribute("exception", e);
            request.getRequestDispatcher("/error.xhtml").forward(request, response);
        }
}

我执行以下方法：

    <p:commandButton value="Dispatch Order" update="@form"
        action="#{orderBean.dispatchOrder()}">
    </p:commandButton>

但是，没有异常处理。

我看到日志中的错误：

May 21, 2013 6:04:32 PM com.sun.faces.lifecycle.InvokeApplicationPhase execute
WARNING: #{orderBean.dispatchOrder()}: MyException.....

我做错了什么？

推荐答案

这个老问题针对JSF 1.x，答案不适用当你发送一个JSF 2.x的ajax请求。您只能在 ajax =false添加到< p：commandButton> 或使用没有< f：ajax> 的标准JSF < h：commandButton> 为了处理ajax请求的异常，您需要一个自定义的。

That old question was targeted on JSF 1.x and the answer is not applicable when you send a JSF 2.x ajax request. Your filter will only be invoked when you add ajax="false" to the <p:commandButton> or use the standard JSF <h:commandButton> without <f:ajax>. In order to handle exceptions on ajax requests, you need a custom ExceptionHandler.

• What is the correct way to deal with JSF 2.0 exceptions for AJAXified components?

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