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java - :validateRegex causes exception

转载 作者：行者123 更新时间：2023-12-02 01:07:12 28 4
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我想验证输入是否严格是由 10-16 个字符长组成的数字。根据用户输入值，我将在输入字段下方显示一条消息。问题是，当我去使用<f:validateRegex>时为了帮助完成此任务，它会导致应用程序抛出异常。

我是 JSF 新手，我很难思考调试应用程序的方法。我的工作范围目前应该只包括 UI 增强...因此，如果可能的话，我想避免使用 validator 类。

这是麻烦的代码。注意:如果我删除标签或将其注释掉，我正在工作的页面将重新加载而不会出现问题。目前，由于应用程序抛出异常，页面应用程序不会向发出请求的浏览器传递任何代码。

<h:inputText id="idNum" value="#{object.var}" 
    styleClass="form-control idNum" maxlength="16" 
    required="true" autocomplete="off">
   <f:validateRegex 
      pattern="\^([0-9][\S][^\sa-zA-Z,./;:!:@#$%&*()<>_+~`{}]{8,14})*$\g" />
</h:inputText>
<h:message for="idNum" />

我很乐意提供任何其他详细信息。但是，我不确定目前有哪些相关的其他细节。对于初学者来说，这是堆栈跟踪:

[8/29/19 21:37:52:386 CDT] 00000093 ServletWrappe E com.ibm.ws.webcontainer.servlet.ServletWrapper service SRVE0014E: Uncaught service() exception root cause Faces Servlet: javax.servlet.ServletException: null source
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:321)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1237)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:781)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:480)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:136)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:97)
    at org.openfaces.util.FileUploadFilter.doFilter(FileUploadFilter.java:120)
    at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
    at org.work.app.auth.filter.HeaderFilter.doFilter(HeaderFilter.java:27)
    at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:967)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1107)
    at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87)
    at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:948)
    at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1817)
    at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:200)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:463)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:530)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:316)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:287)
    at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
    at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
    at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
    at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
    at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
    at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
    at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
    at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
    at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1892)
Caused by: java.lang.IllegalArgumentException: null source
    at java.util.EventObject.<init>(EventObject.java:67)
    at javax.faces.event.SystemEvent.<init>(SystemEvent.java:67)
    at javax.faces.event.ComponentSystemEvent.<init>(ComponentSystemEvent.java:69)
    at javax.faces.event.PostRestoreStateEvent.<init>(PostRestoreStateEvent.java:69)
    at com.sun.faces.lifecycle.RestoreViewPhase.deliverPostRestoreStateEvent(RestoreViewPhase.java:256)
    at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:245)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97)
    at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:107)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:114)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:308)
    ... 32 more

[8/29/19 21:37:52:387 CDT] 00000093 webapp        E com.ibm.ws.webcontainer.webapp.WebApp logServletError SRVE0293E: [Servlet Error]-[Faces Servlet]: java.lang.IllegalArgumentException: null source
    at java.util.EventObject.<init>(EventObject.java:67)
    at javax.faces.event.SystemEvent.<init>(SystemEvent.java:67)
    at javax.faces.event.ComponentSystemEvent.<init>(ComponentSystemEvent.java:69)
    at javax.faces.event.PostRestoreStateEvent.<init>(PostRestoreStateEvent.java:69)
    at com.sun.faces.lifecycle.RestoreViewPhase.deliverPostRestoreStateEvent(RestoreViewPhase.java:256)
    at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:245)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97)
    at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:107)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:114)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:308)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1237)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:781)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:480)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:136)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:97)
    at org.openfaces.util.FileUploadFilter.doFilter(FileUploadFilter.java:120)
    at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
    at org.work.app.auth.filter.HeaderFilter.doFilter(HeaderFilter.java:27)
    at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:967)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1107)
    at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87)
    at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:948)
    at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1817)
    at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:200)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:463)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:530)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:316)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:287)
    at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
    at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
    at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
    at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
    at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
    at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
    at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
    at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
    at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1892)

最佳答案

我修复了导致错误的正则表达式。根据评论，至少有两个罪魁祸首导致了问题 &和 < 。然而，仅仅修复这些并不能解决问题。这是我修复输入的方法。

<h:inputText id="idNum" value="#{object.var}" styleClass="form-control idNum" 
    maxlength="16" required="true" autocomplete="off" requiredMessage="" validatorMessage="No dashes or spaces" binding="#{idNum}">
    <f:validateRegex for="idNum" pattern="(?i-s)(?:[0-9]+){10,16}" />
    <f:ajax immediate="false" event="change" render="idNum-errMsg" />
</h:inputText>
<h:message id="idNum-errMsg" for="idNum" disabled="#{idNum.valid}"  />

关于java - :validateRegex causes exception，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57720019/

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