java.lang.RuntimeException：找不到FacesContext(JSF 1.2 Prime

发布时间：2020-12-15 04:54:25 所属栏目：Java 来源：网络整理

导读：参见英文答案 java.lang.RuntimeException Cannot find FacesContext????????????????????????????????????1个我在尝试在Tomcat 6上运行我的项目时遇到此问题： SEVERE: Servlet.service() for servlet jsp threw exceptionjava.lang.RuntimeException: Can

参见英文答案 > java.lang.RuntimeException Cannot find FacesContext????????????????????????????????????1个
我在尝试在Tomcat 6上运行我的项目时遇到此问题：

SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.RuntimeException: Cannot find FacesContext
        at javax.faces.webapp.UIComponentClassicTagBase.getFacesContext(UIComponentClassicTagBase.java:2122)
        at javax.faces.webapp.UIComponentClassicTagBase.setJspId(UIComponentClassicTagBase.java:1933)
        at org.apache.jsp.Contato_jsp._jspx_meth_f_005fview_005f0(Contato_jsp.java:125)
        at org.apache.jsp.Contato_jsp._jspService(Contato_jsp.java:102)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)

…….

我已经将jsf-impl.jar,jsf-api.jar和jstl-1.2.jar添加到了类路径中.还有其他的lib吗？在下面你可以检查web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.faces</url-pattern>
    </servlet-mapping>

    <servlet>
        <servlet-name>Resource Servlet</servlet-name>
        <servlet-class>org.primefaces.resource.ResourceServlet</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>Resource Servlet</servlet-name>
        <url-pattern>/primefaces_resource/*</url-pattern>
    </servlet-mapping>

    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>


</web-app>

知道发生了什么事吗？我是否需要在pom.xml或类似的东西上配置依赖项？谢谢你的帮助.

解决方法

FacesContext由FacesServlet创建.此异常意味着FacesServlet尚未完成其工作.您已将FacesServlet配置为侦听与模式* .faces匹配的URL.因此,您需要确保请求URL(显示在浏览器地址栏中的URL)与此URL匹配,以便调用它.

换句话说,您需要打开页面

http://localhost:8080/context/Contato.faces

而不是

http://localhost:8080/context/Contato.jsp

与具体问题无关,我不确定“PrimeFaces”在你的问题标题中做了什么,但我只是想警告PrimeFaces根本不支持JSP.它仅支持其后继Facelets(XHTML).在JSP文件而不是Facelets文件中使用Facelets的PrimeFaces标签只会导致它们被解释为普通的HTML.

（编辑：李大同）

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