Question

我是JAVA EE的新手。我的问题是标签h：outputText没有在浏览器中呈现。我用

Eclipse JAVA EE IDE（Luna Service Release 1（4.4.1））
Apache的Tomcat的7.0.57
Maven 3.2.5
Java版本1.7

库中包含的JAR文件： junit3.8.1，jsf-api-2.1.13，jsf-impl-2.1.12，javax.servlet-api-3.0.1

以下是我的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
 id="WebApp_ID" version="3.0">
    <display-name>jsfexample</display-name>
    <servlet>
        <servlet-name>faces</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>faces</servlet-name>
        <url-pattern>*.xhtml</url-pattern>
   </servlet-mapping>
   <welcome-file-list>
        <welcome-file>index.xhtml</welcome-file>
    </welcome-file-list> 
</web-app>

的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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.javacodegeeks.snippets.enterprise</groupId>
  <artifactId>jsfexample</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>jsfexample Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
        <dependency>
            <groupId>com.sun.faces</groupId>
            <artifactId>jsf-api</artifactId>
            <version>2.1.13</version>
        </dependency>
        <dependency>
            <groupId>com.sun.faces</groupId>
            <artifactId>jsf-impl</artifactId>
            <version>2.1.13</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
        </dependency>
  </dependencies>
  <build>
    <finalName>jsfexample</finalName>
  </build>
</project>

的index.xhtml

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html">
<h:head>
    <title>JavaCodeGeeks</title>
</h:head>
<h:body>
    <b>Check B tag</b>
    <h:outputText value="#{helloWorldBean.msg}" />
</h:body>
</html>

JAVABEAN-helloWorld.java

import javax.annotation.PostConstruct;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
@ManagedBean(name="helloWorldBean")
@RequestScoped
public class HelloWorldBean {
    public String msg="test";
    public String getMsg() {
        return msg;
    }
    public void setMsg(String msg) {
       this.msg = msg;
    }
    @PostConstruct
    private void init() {
        msg = "Hello World!! JFS example.. ";
   }
}

请告诉我为什么标签没有渲染。提前谢谢。

Answer 1

事实上，将servlet映射放在web.xml中更好，如下所示

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

因此，您告诉您的应用程序，任何名为wirh prefix faces /的xhtml文件都应该由面Servlet呈现。

index.xhtml的<h：outputtext>未在浏览器中呈现</h：outputtext>

1 个答案: