呈现视图java.lang.StringIndexOutOfBoundsException:字符串索引超出范围：0

当我尝试登录我的web应用程序时，我遇到了一个问题，用户没有问题，因为当HQL找到数据时，我可以看到跟踪，因此为了更明显，堆栈跟踪如下所示：

对于应用程序，我使用以下库：

• Primefaces 3.5
• JSF2.1.21
• 休眠4.0.10
• JPA2.0
• Tomcat 7.0

  abr. 30, 2013 4:25:14 PM com.sun.faces.application.view.FaceletViewHandlingStrategy handleRenderException
  SEVERE: Error Rendering View[/pages/protected/index.xhtml]
  java.lang.StringIndexOutOfBoundsException: String index out of range: 0
  at java.lang.String.charAt(Unknown Source)
  at com.sun.faces.application.view.MultiViewHandler.getResourceURL(MultiViewHandler.java:332)
  at org.primefaces.renderkit.CoreRenderer.getResourceURL(CoreRenderer.java:76)
  at org.primefaces.renderkit.OutcomeTargetRenderer.getTargetURL(OutcomeTargetRenderer.java:91)
  at org.primefaces.component.menu.BaseMenuRenderer.encodeMenuItem(BaseMenuRenderer.java:78)
  at org.primefaces.component.tieredmenu.TieredMenuRenderer.encodeMenuContent(TieredMenuRenderer.java:104)
  at org.primefaces.component.tieredmenu.TieredMenuRenderer.encodeSubmenu(TieredMenuRenderer.java:166)
  at org.primefaces.component.tieredmenu.TieredMenuRenderer.encodeMenuContent(TieredMenuRenderer.java:123)
  at org.primefaces.component.tieredmenu.TieredMenuRenderer.encodeMenu(TieredMenuRenderer.java:77)
  at org.primefaces.component.menubar.MenubarRenderer.encodeMarkup(MenubarRenderer.java:52)
  at org.primefaces.component.menu.BaseMenuRenderer.encodeEnd(BaseMenuRenderer.java:39)
  at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:881)
  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786)
  at javax.faces.render.Renderer.encodeChildren(Renderer.java:168)
  at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:851)
  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1779)
  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782)
  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782)
  at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:439)
  at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:124)
  at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
  at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
  at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
  at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)
  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
  at com.test.ems2.filter.LoginCheckFilter.doFilter(LoginCheckFilter.java:69)
  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
  at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
  at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
  at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
  at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
  at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
  at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
  at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
  at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
  at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
  at java.lang.Thread.run(Unknown Source)
  

web.xml文件

EMS2App
主题
蓝天
Facesservlet
javax.faces.webapp.FacesServlet
1.
Facesservlet
*.xhtml
/pages/protected/index.xhtml
javax.faces.PROJECT_阶段
发展
登录检查过滤器
com.test.ems2.filter.LoginCheckFilter
后勤
/EMS2APP/pages/public/login.xhtml
登录检查过滤器
/*
管理员页面过滤器
com.test.ems2.filter.AdminPagesFilter
管理员页面过滤器
/页面/受保护/管理/*
DefaultUserPagesFilter
com.test.ems2.filter.DefaultUserPagesFilter
DefaultUserPagesFilter
/页面/受保护/默认用户/*

faces-config.xml文件

信息
捆
信息

我的抽象过滤器类

public class AbstractFilter {

    public AbstractFilter() {
        super();
    }

    protected void doLogin(ServletRequest request, ServletResponse response, HttpServletRequest req) throws ServletException, IOException {
        RequestDispatcher rd = req.getRequestDispatcher("/pages/public/login.xhtml");
        rd.forward(request, response);
    }

    protected void accessDenied(ServletRequest request, ServletResponse response, HttpServletRequest req) throws ServletException, IOException {
        RequestDispatcher rd = req.getRequestDispatcher("/pages/public/accessDenied.xhtml");
        rd.forward(request, response);
    }
}

我的LoginCheckFilter类：

public class LoginCheckFilter extends AbstractFilter implements Filter {
    private static List<String> allowedURIs;

    public void init(FilterConfig fConfig) throws ServletException {
        if(allowedURIs == null){
            allowedURIs = new ArrayList<String>();
            allowedURIs.add(fConfig.getInitParameter("loginActionURI"));
            allowedURIs.add("/EMS2App/javax.faces.resource/main.css.xhtml");
            allowedURIs.add("/EMS2App/javax.faces.resource/theme.css.xhtml");
            allowedURIs.add("/EMS2App/javax.faces.resource/primefaces.js.xhtml");
            allowedURIs.add("/EMS2App/javax.faces.resource/primefaces.css.xhtml");
            allowedURIs.add("/EMS2App/javax.faces.resource/jquery/jquery.js.xhtml");
            allowedURIs.add("/EMS2App/javax.faces.resource/messages/messages.png.xhtml");
            allowedURIs.add("/EMS2App/javax.faces.resource/images/ui-icons_2e83ff_256x240.png.xhtml");
            allowedURIs.add("/EMS2App/javax.faces.resource/images/ui-icons_38667f_256x240.png.xhtml");
        }
    }

    public void destroy() {
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) request;
        HttpSession session = req.getSession();

        if (session.isNew()) {
            doLogin(request, response, req);
            return;
        }

        User user = (User) session.getAttribute("user");

        if (user == null && !allowedURIs.contains(req.getRequestURI())) {
            System.out.println(req.getRequestURI());
            doLogin(request, response, req);
            return;
        }

        chain.doFilter(request, response);  //error -> row 69
    }
}

公共类LoginCheckFilter扩展了AbstractFilter实现过滤器{
私有静态列表允许URI；
public void init（FilterConfig fConfig）抛出ServletException{
if（allowedURIs==null）{
AllowedURI=新的ArrayList（）；
add（fConfig.getInitParameter（“loginActionURI”）；
allowedURIs.add（“/EMS2App/javax.faces.resource/main.css.xhtml”）；
allowedURIs.add（“/EMS2App/javax.faces.resource/theme.css.xhtml”）；
allowedURIs.add（“/EMS2App/javax.faces.resource/primefaces.js.xhtml”）；
allowedURIs.add（“/EMS2App/javax.faces.resource/primefaces.css.xhtml”）；
allowedURIs.add（“/EMS2App/javax.faces.resource/jquery/jquery.js.xhtml”）；
allowedURIs.add（“/EMS2App/javax.faces.resource/messages/messages.png.xhtml”）；
allowedURIs.add（“/EMS2App/javax.faces.resource/images/ui-icons_2e83ff_256x240.png.xhtml”）；
allowedURIs.add（“/EMS2App/javax.faces.resource/images/ui-icons_38667f_256x240.png.xhtml”）；
}
}
公共空间销毁（）{
}
public void doFilter（ServletRequest请求、ServletResponse响应、FilterChain链）抛出IOException、ServletException{
HttpServletRequest req=（HttpServletRequest）请求；
HttpSession session=req.getSession（）；
if（session.isNew（））{
多洛金（请求、响应、请求）；
返回；
}
User=（User）session.getAttribute（“用户”）；
if（user==null&&！allowedURIs.contains（req.getRequestURI（）））{
System.out.println（req.getRequestURI（））；
多洛金（请求、响应、请求）；
返回；
}
chain.doFilter（请求、响应）；//错误->第69行
}
}

文件：/pages/protected/index.xhtml

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core" xmlns:p="http://primefaces.org/ui" >
<h:body>
    <ui:composition template="/pages/protected/templates/master.xhtml">
        <ui:define name="divMain">
            #{bundle.welcomeMessage} :<br/>
        </ui:define>    
    </ui:composition>
</h:body>
</html>

#{bundle.welcomeMessage}:

master.xhtml

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:p="http://primefaces.org/ui"
    xmlns:f="http://java.sun.com/jsf/core">

<h:head>
    <title>EMS2</title>
    <h:outputStylesheet library="css" name="main.css" />
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</h:head>

<h:body>
    <f:view contentType="text/html; charset=UTF-8" encoding="UTF-8" >
        <div id="divTop" style="vertical-align: middle;">
            <ui:insert name="divTop">
                <ui:include src="top.xhtml" />
            </ui:insert>
        </div>

        <div id="divMain">
            <p:growl id="messageGrowl" />
            <ui:insert name="divMain" />
        </div>

        <div id="divLeft">
            <ui:insert name="divDown">
                <ui:include src="down.xhtml" />
            </ui:insert>
        </div>

        <h:outputScript library="javascript" name="jscodes.js" />
    </f:view>
</h:body>
</html>

EMS2

down.xhtml

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:p="http://primefaces.org/ui">

<h:body>
    <ui:composition>
        <h:form>
            <p>Test test test</p><br />         
        </h:form>
    </ui:composition>
</h:body>
</html>

测试测试

top.xhtml

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:p="http://primefaces.org/ui">
   <h:body>   
     <ui:composition>
        <div id="topMessage">
            <h1>
                <h:form>
                    <p:menubar>
                    <p:submenu label="Personnes">
                        <p:menuitem label="Ajouter Personne" url="#"/>
                        <p:menuitem label="Miss a jour Personne" url="#"/>
                    </p:submenu>
                    <p:submenu label="Absences">
                        <p:menuitem label="Poser des absences" url="#"/>
                        <p:menuitem label="Validation des absences" url="#"/>
                        <p:menuitem label="Gestion de absences" url="#"/>
                    </p:submenu>
                    <p:submenu label="Pointage">
                        <p:menuitem label="Saisie des temps" url="#"/>
                        <p:menuitem label="Validation des temps" url="#"/>
                        <p:menuitem label="Extration des temps Vers PowerMax" url="#"/>
                    </p:submenu>
                    <p:submenu label="Projet/Activite">
                        <p:submenu label="Activite">
                            <p:menuitem label="Creer Activite" url="/pages/protected/admin/dialogs/creerActivite.xhtml" />
                            <p:menuitem label="Miss a jour l'Activite" url="/pages/protected/admin/dialogs/missAJourActivite.xhtml" />
                        </p:submenu>
                        <p:submenu label="Projet">
                            <p:menuitem label="Creer projet" url="/pages/protected/admin/dialogs/creerProjet.xhtml" />
                            <p:menuitem label="Miss a jour projet" url="/pages/protected/admin/dialogs/missAJourProjet.xhtml" />
                        </p:submenu>
                    </p:submenu>
                    <p:submenu label="Rapport">
                        <p:menuitem label="Statistique projet" url="#"/>
                        <p:menuitem label="Statistique diverses" url="#"/>
                    </p:submenu>
                </p:menubar>
                #{bundle.loginWelcomeMessage}: #{userMB.user.name} | <p:commandButton value="#{bundle.logOut}" action="#{userMB.logOut()}" ajax="false" style="font-size: 20px;" />
                </h:form>
            </h1>
        </div>
     </ui:composition>   
   </h:body>
</html>

#{bundle.loginWelcomeMessage}:#{userMB.user.name}

我认为错误来自xhtml（/pages/protected/index.xhtml），一个primefaces菜单。。。我们能看看这个文件吗？@AlexandreLavoie是的，我已经添加了index.xhtml文件。请再次查看文章。由于错误看起来像EL中的错误，可能是来自索引中的模板，是否所有使用master.xhtml的页面都存在此错误？如果是的话，就需要看一看了@我已经添加了所有文件.xhtml，请参阅。谢谢exception+stacktrace提示您在某个地方有一个

，URL为空字符串。但是，这在目前提供的代码中不可见。因此，要么您没有运行您认为正在运行的代码（清理/重建/重新部署/重新启动），要么代码中有更多内容。顺便说一句，创建一个只有一个拷贝的、粘贴的、可运行的XHTML文件（很可能是一个托管bean）风格的、完全有价值的SSCE将极大地帮助您（和我们）确定原因，而不是这个代码炸弹，它的主要部分与具体问题无关。