目标不可访问，标识符解析为空-JSF_Jsf_Tomcat6_Jsf 2.2

目标不可访问，标识符解析为空-JSF

jsf

目标不可访问，标识符解析为空-JSF,jsf,tomcat6,jsf-2.2,Jsf,Tomcat6,Jsf 2.2,问题类似于：但没有一项决议对我有帮助。当我单击命令按钮（第页，请参见xhtml文件）时，我得到：我知道为什么。为什么这个bean在jsf中不可见使用java8、J2EE7、Tomcat6.0.44 My pom.xml： <packaging>war</packaging> <build> <plugins> <plugin> <groupId>org.apach

问题类似于：

但没有一项决议对我有帮助。当我单击命令按钮（第页，请参见xhtml文件）时，我得到：

我知道为什么。为什么这个bean在jsf中不可见

使用java8、J2EE7、Tomcat6.0.44

My pom.xml：

<packaging>war</packaging>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.6</version>
            <configuration>
                <warName>jsfTut</warName>
            </configuration>
        </plugin>
    </plugins>
</build>
<dependencies>
    <!-- JSF deps -->
    <dependency>
        <groupId>com.sun.faces</groupId>
        <artifactId>jsf-api</artifactId>
        <version>2.2.12</version>
    </dependency>
    <dependency>
        <groupId>com.sun.faces</groupId>
        <artifactId>jsf-impl</artifactId>
        <version>2.2.12</version>
    </dependency>
    <!-- others -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
    </dependency>
    <dependency>
        <groupId>org.primefaces</groupId>
        <artifactId>primefaces</artifactId>
        <version>5.3</version>
    </dependency>
</dependencies>

和xhtml文件：

<?xml version="1.0" encoding="UTF-8"?>
<!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:h="http://xmlns.jcp.org/jsf/html">
<h:head>
    <title>My JSF page</title>
</h:head>
<h:body>
    <h1>Navigate via Java</h1>
    <fieldset>
        <legend>Use Java to Navigate to Results Page</legend>
        <h:form>
            Press button to get one of two possible results pages.<br/>
            <h:commandButton value="Go to Random Page" action="#{navigator.choosePage}"/>
        </h:form>
    </fieldset>
</h:body>
</html>

正如@BalusC在评论中所说的那样。问题出在Tomcat6中。不得不升级到tomcat-8的更新版本。

很多荣誉。

为什么Navigator类没有限定范围？@Mahendranayyarsamykandair sessions？我试过了。没有区别。ViewScope也尝试过。不理解那些范围内的，但是用蛮力把它们变成树。Tomcat 6？真正地这不是Servlet3.1容器，因此整个web.xml首先无法工作。在Maven中通过webapp提供Servlet3.1毫无意义。servletcontainer本身对此负责。升级到Tomcat8，这是一个Servlet3.1容器。从这里开始@BalusC这是我甚至没想到会成为问题的事情。谢谢，很好用。我举了那个形式的例子，甚至没有想到那个。

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
     version="3.1">

<display-name>JSF</display-name>

<context-param>
    <param-name>javax.faces.PROJECT_STAGE</param-name>
    <param-value>Development</param-value>
</context-param>
<context-param>
    <param-name>javax.faces.CONFIG_FILES</param-name>
    <param-value>/WEB-INF/faces-config.xml</param-value>
</context-param>

<welcome-file-list>
    <welcome-file>faces/index.xhtml</welcome-file>
</welcome-file-list>

<servlet>
    <servlet-name>JSF</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>JSF</servlet-name>
    <url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>JSF</servlet-name>
    <url-pattern>*.jsf</url-pattern>
</servlet-mapping>

<?xml version='1.0' encoding='UTF-8'?>
<faces-config version="2.2" xmlns="http://xmlns.jcp.org/xml/ns/javaee"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd">
</faces-config>

package pl.sarseth.jsf;
import javax.faces.bean.ManagedBean;

@ManagedBean(name = "navigator")
public class Navigator {

    public String choosePage(){
        if(Math.random() > 0.5){
            return "result-page-1";
        } else {
            return "result-page-2";
        }
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<!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:h="http://xmlns.jcp.org/jsf/html">
<h:head>
    <title>My JSF page</title>
</h:head>
<h:body>
    <h1>Navigate via Java</h1>
    <fieldset>
        <legend>Use Java to Navigate to Results Page</legend>
        <h:form>
            Press button to get one of two possible results pages.<br/>
            <h:commandButton value="Go to Random Page" action="#{navigator.choosePage}"/>
        </h:form>
    </fieldset>
</h:body>
</html>

project
---src
   ---main
      ---java
         ---pl.sarseth.jsf
            ---Navigator.java
      ---webapp
         ---WEB-INF
            ---faces-config.xml
            ---web.xml
         ---index.xhtml
         ---navigate.xhtml
 ---pom.xml