JSF-2.3 找不到我的 @Named CDI-1.2 托管 bean
Posted
技术标签:
【中文标题】JSF-2.3 找不到我的 @Named CDI-1.2 托管 bean【英文标题】：JSF-2.3 not finding my @Named CDI-1.2 managed bean 【发布时间】：2017-10-19 06:51:22 【问题描述】：最近从 2.2 升级到 JSF 2.3，我注意到 @ManagedBean 已被弃用，经过一些研究发现我应该使用 CDI-1.2 托管 bean 和 @Named 注释。
但是切换到@Named 后，JSF 页面找不到托管 bean：
javax.servlet.ServletException: /index.xhtml @38,38 value="#controller.telstraPass": 目标不可达，标识符“控制器”解析为空
我正在使用 Maven、eclipse 和 WebSphere Application Server liberty v16.0.0.4 不知道我做错了什么，这里是相关文件：
Controller.java：
package ManagedBeans;
import java.io.PrintWriter;
import java.io.Serializable;
import java.io.StringWriter;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import javax.servlet.http.Part;
import Main.FileHandler;
import Main.IBMEmployee;
@Named("controller")
@SessionScoped
public class Controller implements Serializable
private Part telstraCustomersFile;
private Part terminateesFile;
private String telstraPass;
private String termineesPass;
private String exception;
private String exceptionTrace;
private FileHandler fileHandler = new FileHandler();
private IBMEmployee[] potentialMatches;
public String perform()
try
fileHandler.process(telstraCustomersFile, terminateesFile, telstraPass, termineesPass);
potentialMatches = fileHandler.potentialMatches;
catch (Exception ex)
StringWriter errors = new StringWriter();
ex.printStackTrace(new PrintWriter(errors));
exception = ex.toString();
exceptionTrace = errors.toString();
return ("errorPage.xhtml");
return ("searchExcel.xhtml");
public void setTelstraPass(String value) telstraPass = value;
public String getTelstraPass() return telstraPass;
public void setTermineesPass(String value) termineesPass = value;
public String getTermineesPass() return termineesPass;
public void setTelstraCustomersFile(Part file) telstraCustomersFile = file;
public Part getTelstraCustomersFile() return telstraCustomersFile;
public void setTerminateesFile(Part file) terminateesFile = file;
public Part getTerminateesFile() return terminateesFile;
public String getException() return exception;
public String getExceptionTrace() return exceptionTrace;
public IBMEmployee[] getExactMatches() return fileHandler.exactMatches;
public IBMEmployee[] getPotentialMatches() return potentialMatches;
index.xhtml:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>Termination Checklist</title>
<h:outputScript name="js/scripts.js"/>
<h:outputStylesheet name="css/PageFormat.css"/>
Created By Jerry Boyaji
<h:graphicImage id="IBMLogo" name="images/IBM-logo.jpg" />
</h:head>
<h:body onload="enableDisableSubmitBtn()">
<div id="ContentFrame">
<h1>Corporate Account Termination Application (CATA)</h1>
<h3>Excel Search: <br/> Select your spreadsheet files to upload:</h3>
<br/>
<br/>
<h:form id="excelInputForm" enctype="multipart/form-data"
name="UploadForm"
method="Post">
Telstra Spreadsheet File:
<br/>
<h:inputFile
id="telstraCustomers"
name="telstra file"
size="40"
value="#controller.telstraCustomersFile"
required="True"
onchange="enableDisableSubmitBtn()"/>
Password if Applicable:
<h:inputSecret
id="telstraSpreadsheetPassword"
value="#controller.telstraPass"
label="Password if Applicable"/>
<br/>
<br/>
Termination Spreadsheet File:
<br/>
<h:inputFile
id="terminatees"
name="termination file"
size="40"
value="#controller.terminateesFile"
required="True"
onchange="enableDisableSubmitBtn()" />
Password if Applicable:
<h:inputSecret
id="termineesSpreadsheetPassword"
value="#controller.termineesPass"
label="Password if Applicable"/>
<br/>
<br/>
<h:commandButton
id="submit"
value="Upload and Continue"
type = "submit"
action="#controller.perform"/>
</h:form>
</div>
</h:body>
</html>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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_3_0.xsd" version="3.0">
<display-name>MainApplication</display-name>
<welcome-file-list>
<welcome-file>index.xhtml</welcome-file>
</welcome-file-list>
<context-param>
<description>
State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>client</param-value>
</context-param>
<context-param>
<param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
<param-value>resources.application</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>*.xhtml</url-pattern>
</servlet-mapping>
<security-constraint>
<display-name>HTTPS Redirect Security Constraint</display-name>
<web-resource-collection>
<web-resource-name>MainApplication</web-resource-name>
<url-pattern>/*</url-pattern>
</web-resource-collection>
<user-data-constraint>
<transport-guarantee>CONFIDENTIAL</transport-guarantee>
</user-data-constraint>
</security-constraint>
</web-app>
Server.xml：
<server description="jerry's local server">
<!-- Enable features -->
<featureManager>
<feature>localConnector-1.0</feature>
<feature>websocket-1.1</feature>
<feature>appSecurity-2.0</feature>
<feature>cdi-1.2<feature>
<feature>jsp-2.3</feature>
</featureManager>
<basicRegistry id="basic">
<user name="admin" password="****"/>
</basicRegistry>
<administrator-role>
<user>admin</user>
</administrator-role>
<remoteFileAccess>
<writeDir>$server.config.dir</writeDir>
</remoteFileAccess>
<!-- To access this server from a remote client add a host attribute to the following element, e.g. host="*" -->
<httpEndpoint host="localhost" httpPort="9080" httpsPort="9443" id="defaultHttpEndpoint"/>
<!-- Automatically expand WAR files and EAR files -->
<applicationManager autoExpand="true"/>
<applicationMonitor updateTrigger="mbean"/>
<keyStore id="defaultKeyStore" password="****"/>
<webApplication id="MainApplication" location="MainApplication.war" name="MainApplication"/>
</server>
pom.xml：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>Termination-Checklist-Maven</groupId>
<artifactId>MainApplication</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>MainApplication</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<pluginRepositories>
<!-- Configure WASdev repository -->
<pluginRepository>
<id>WASdev</id>
<name>WASdev Repository</name>
<url>http://public.dhe.ibm.com/ibmdl/export/pub/software/websphere/wasdev/maven/repository/</url>
<layout>default</layout>
<snapshots>
<enabled>false</enabled>
</snapshots>
<releases>
<enabled>true</enabled>
</releases>
</pluginRepository>
</pluginRepositories>
<build>
<plugins>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<webXml>WebContent/WEB-INF/web.xml</webXml>
</configuration>
</plugin>
<plugin>
<groupId>com.ibm.websphere.wlp.maven.plugins</groupId>
<artifactId>liberty-maven-plugin</artifactId>
<version>1.0</version>
<configuration>
<serverHome>/Applications/WebProfile</serverHome>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<!--other repositories if any-->
<repository>
<id>project.local</id>
<name>project</name>
<url>file:$project.basedir/repo</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.faces</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>javax.enterprise</groupId>
<artifactId>cdi-api</artifactId>
<version>1.2</version>
<scope>provided<scope>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.16-beta2</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.16-beta2</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.json</artifactId>
<version>1.0.4</version>
</dependency>
<dependency>
<groupId>javax.json</groupId>
<artifactId>javax.json-api</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.16-beta2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
</dependencies>
</project>
faces-config.xml：
<?xml version='1.0' encoding='UTF-8'?>
<faces-config version="2.3"
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-facesconfig_2_3.xsd">
</faces-config>
我的 WEB-INF 文件夹中还有一个空 beans.xml 文件，其中包含我的 web.xml 和 faces-config.xml。
据我所知，我所做的一切都是正确的，我没有 JSF 或 CDI 的竞争实现，并且没有使用 JSF 包中的任何范围。我完全不知道为什么这不起作用...
【问题讨论】：
尝试添加jsf-2.2功能，因为我只看到jsp-2.3。
我使用的是 jsf-2.3，它与我的 .war 一起打包，正如您在我的 pom.xml 中看到的那样，为什么要添加到以前的版本中来解决这个问题？ Jsp-2.3 也是必需的，因为没有它就无法工作（我认为是因为 jsf-2.3 或 cdi-1.2 需要它作为提供的依赖项，不记得它是哪个）
您的应用程序很简单，可以使用内置的 jsf-2.2 运行，这是 Java EE 7 的默认设置，所以为了测试，您应该尝试从您的战争中删除任何外部 jsf 库，并且使用服务器提供的运行。
升级到 jsf-2.3 以利用异步性和 正如 Gas 指出的那样，问题在于 WAS 中的内置 CDI 功能不适用于外部 JSF 库。
请参阅 IBM 支持页面上的 my post 以确认这一点。
使用 JSF-2.2 仍然使用 Web 套接字的一种方法是使用 @Gas 指出的 Javax.websocket 包。但是，此 Web 套接字实现的局限性在于，将 SessionScoped ManagedBean 中包含的数据发送到该会话的客户端并不像我希望的那样使用来自 JSF-2.3 的 f:websocket做。
【讨论】：
以上是关于JSF-2.3 找不到我的 @Named CDI-1.2 托管 bean的主要内容，如果未能解决你的问题，请参考以下文章
Wildfly 以错误开头。 javax.faces.FacesException：找不到 CDI BeanManager
CDI @Named bean 中的 @javax.faces.bean.ManagedProperty 返回 null