javax.faces.context.FacesContextFactory 将 Undertow 嵌入 JSF 应用程序时出现异常

Question

我正在尝试使用嵌入式 Undertow 服务器构建一个简单的 JSF Web 应用程序。

Gradle 项目的依赖项：

dependencies {

               compile group: 'io.undertow', name: 'undertow-core',    version: '1.4.0.CR3'
               compile group: 'io.undertow', name: 'undertow-servlet', version: '1.4.0.CR3'
               compile group: 'javax', name: 'javaee-api', version: '7.0'
               compile group: 'org.glassfish', name: 'javax.faces', version: '2.2.11'

}

示例 Undertow 服务器代码：

public class HelloWorldServer {

    public static void main(final String[] args) throws ServletException {

        DeploymentInfo servletContainer=Servlets.deployment()
                .setClassLoader(HelloWorldServer.class.getClassLoader())
                .setDeploymentName("helloWorld.war")
                .setContextPath("")
                .addServlet(Servlets.servlet("javax.faces.webapp.FacesServlet",FacesServlet.class)
                .addMappings("/faces/*","/javax.faces.resource/*")
                .setLoadOnStartup(1));
        DeploymentManager manager=Servlets.defaultContainer().addDeployment(servletContainer);
        manager.deploy();
        HttpHandler servletHandler=manager.start();
        PathHandler path = Handlers.path(Handlers.redirect(""))
                    .addPrefixPath("/", servletHandler);

         Undertow server = Undertow.builder()
                    .addHttpListener(8080, "localhost")
                    .setHandler(path)
                    .build();
            server.start();

    }
}

当我启动服务器时，出现以下错误：

Mar 07, 2017 6:04:49 PM javax.faces.FactoryFinder$FactoryManager copyInjectionProviderFromFacesContext
SEVERE: Unable to obtain InjectionProvider from init time FacesContext. Does this container implement the Mojarra Injection SPI?
Mar 07, 2017 6:04:49 PM javax.faces.FactoryFinder$FactoryManager getFactory
SEVERE: Application was not properly initialized at startup, could not find Factory: javax.faces.context.FacesContextFactory. Attempting to find backup.
Exception in thread "main" java.lang.IllegalStateException: Could not find backup for factory javax.faces.context.FacesContextFactory. 
    at javax.faces.FactoryFinder$FactoryManager.getFactory(FactoryFinder.java:1135)
    at javax.faces.FactoryFinder.getFactory(FactoryFinder.java:379)
    at javax.faces.webapp.FacesServlet.init(FacesServlet.java:350)
    at io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:117)
    at io.undertow.servlet.core.ManagedServlet$DefaultInstanceStrategy.start(ManagedServlet.java:239)
    at io.undertow.servlet.core.ManagedServlet.createServlet(ManagedServlet.java:133)
    at io.undertow.servlet.core.DeploymentManagerImpl.start(DeploymentManagerImpl.java:541)
    at HelloWorldServer.main(HelloWorldServer.java:24)

Answer 1

终于找到解决方法了

对于 JSF bootstrap 进程，我们必须向 Undertow DeploymentInfo 添加两个额外的初始化参数 class。

com.sun.faces.forceLoadConfiguration = 真
com.sun.faces.expressionFactory = com.sun.el.ExpressionFactoryImpl

此外，除了 JSF，我们还必须添加两个额外的依赖项。

el-api
el-impl

javax.faces.context.FacesContextFactory 将 Undertow 嵌入 JSF 应用程序时出现异常

javax.faces.context.FacesContextFactory Exception while embedding Undertow with JSF application

jsf

spring-boot

jsf-2

undertow