JSF 2.0不呈现任何页面

时间：2012-01-14 21:02:15

标签： jsf java-ee jsf-2 glassfish-3 web.xml

我是一个刚开始使用Java EE程序员的人，他在设置我的第一个“JSF 2.0”应用程序时遇到了麻烦。我正在使用以下技术：

  • jdk1.6.0_24
  • MyEclipse 10.0
  • Glassfish 3.0.1
  • JSF 2.0

问题：我找不到让我的服务器解析并呈现JSF 2.0页面的方法。我跟着各种指南（特别是来自stackoverflow.com）没有成功。我的测试页面不是由Glassfish 3.0.1呈现的。我尝试了不同的方法来修复我的代码，包括：

1 - ＆gt;的web.xml

1.1 - ＆gt; 已编辑的标头，指定JFS 2.0 HTML taglib属性（..）

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 
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">

1.2 - 定义了JSF servlet和其他东西

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

  <context-param>
    <param-name>com.sun.faces.expressionFactory</param-name>
    <param-value>com.sun.el.ExpressionFactoryImpl</param-value>
  </context-param>

  <context-param>
    <param-name>javax.faces.PROJECT_STAGE</param-name>
    <param-value>Development</param-value>
  </context-param>

  <context-param>
    <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
    <param-value>.xhtml</param-value>
 </context-param>

 <context-param>
    <param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
    <param-value>true</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>/register.xhtml</url-pattern>
  </servlet-mapping>

2 - ＆gt; 多次验证，检查所使用的请求网址是否与FacesServlet的网址格式匹配。

  **Target page** (url was not typed in browser . . . ): register.xhtml

  **URL Pattern:** 

  <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>/register.xhtml</url-pattern>
  </servlet-mapping>

3 - ＆gt; 主页

3.1.1 - ＆gt; 包含指定JFS 2.0 HTML taglib属性的标头（..）

<!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://java.sun.com/jsf/html"

xmlns:f="http://java.sun.com/jsf/core">

4 - 图书馆＆amp;依赖

使用Maven 2.0支持开始我的项目。这是我的pom.xml文件：

<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

  <modelVersion>4.0.0</modelVersion>
  <groupId>JSF2.0_Template_1</groupId>
  <artifactId>JSF2.0_Template_1</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>

  <name></name>
  <description></description>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>


<dependency>
  <groupId>com.sun.el</groupId>
  <artifactId>el-ri</artifactId>
  <version>1.0</version>
</dependency>

<dependency>    
  <groupId>org.glassfish</groupId>
  <artifactId>bean-validator</artifactId>
  <version>3.0-JBoss-4.0.2</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.annotation</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.ejb</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.enterprise.deploy</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.jms</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.management.j2ee</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.eclipse.persistence</groupId>
  <artifactId>javax.persistence</artifactId>
  <version>2.0.0</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.resource</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.security.auth.message</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.security.jacc</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.servlet</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.servlet.jsp</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.servlet.jsp.jstl</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.transaction</artifactId>
  <version>3.0.1</version>
</dependency>

<dependency>
  <groupId>javax.xml.bind</groupId>
  <artifactId>jaxb-api-osgi</artifactId>
  <version>2.2.1</version>
</dependency>

<dependency>
  <groupId>javax.ws.rs</groupId>
  <artifactId>jsr311-api</artifactId>
  <version>1.1.1</version>
</dependency>

<dependency>
  <groupId>org.glassfish.web</groupId>
  <artifactId>jstl-impl</artifactId>
  <version>1.2</version>
</dependency>

<dependency>
  <groupId>javax.mail</groupId>
  <artifactId>mail</artifactId>
  <version>1.4.3</version>
</dependency>

<dependency>
  <groupId>javax.xml</groupId>
  <artifactId>webservices-api-osgi</artifactId>
  <version>2.0.1</version>
</dependency>

<dependency>
  <groupId>org.jboss.weld</groupId>
  <artifactId>weld-osgi-bundle</artifactId>
  <version>1.0.1-SP3</version>
</dependency>

<dependency>
  <groupId>com.sun.faces</groupId>
  <artifactId>jsf-api</artifactId>
  <version>2.0.3</version>
</dependency>

<dependency>
  <groupId>com.sun.faces</groupId>
  <artifactId>jsf-impl</artifactId>
  <version>2.0.3</version>
</dependency>

  </dependencies>


  <build>
    <plugins>

  <plugin>
    <artifactId>maven-war-plugin</artifactId>
  </plugin>

  <plugin>
    <artifactId>maven-compiler-plugin</artifactId>
    <configuration>
      <source>1.6</source>
      <target>1.6</target>
    </configuration>
  </plugin>

</plugins>

  </build>
</project>

5 - Glassfish结果

5.1 - HTML JSF 2.0代码：

<!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://java.sun.com/jsf/html"
  xmlns:f="http://java.sun.com/jsf/core">

<h:head>
  <title>A Simple JavaServer Faces Registration Application</title>
</h:head>
<h:body>
  <h:form>
    <h2>JSF Registration App</h2>
    <h4>Registration Form</h4>
    <table>
      <tr>
        <td>First Name:</td>
        <td>
          <h:inputText label="First Name" 
                   id="fname" value="#{userBean.firstName}" 
                       required="true"/>
          <h:message for="fname" />
        </td>
      </tr>
      <tr>
        <td>Last Name:</td>
        <td>
      <h:inputText label="Last Name"
                   id="lname" value="#{userBean.lastName}"
                   required="true"/>
          <h:message for="lname" />
        </td>
      </tr>
      <tr>
        <td>Sex:</td>
        <td>
          <h:selectOneRadio label="Sex" 
                            id="sex" value="#{userBean.sex}" required="true">
            <f:selectItem itemLabel="Male" itemValue="male" />
            <f:selectItem itemLabel="Female" itemValue="female" />
          </h:selectOneRadio>
          <h:message for="sex" />
        </td>
      </tr>
      <tr>
        <td>Date of Birth:</td>
        <td>
          <h:inputText label="Date of Birth"
                   id="dob" value="#{userBean.dob}" required="true">
            <f:convertDateTime pattern="MM-dd-yy" />
          </h:inputText> (mm-dd-yy)
          <h:message for="dob" />
        </td>
      </tr>
      <tr>
        <td>Email Address:</td>
        <td>
          <h:inputText label="Email Address"
                   id="email" value="#{userBean.email}" required="true"
                   validator="#{userBean.validateEmail}"/>
          <h:message for="email" />
        </td>
      </tr>
      <tr>
        <td>Service Level:</td>
        <td>
          <h:selectOneMenu label="Service Level"
                       value="#{userBean.serviceLevel}">
            <f:selectItem itemLabel="Medium" itemValue="medium" />
            <f:selectItem itemLabel="Basic" itemValue="basic" />
            <f:selectItem itemLabel="Premium" itemValue="premium" />
          </h:selectOneMenu>
        </td>
      </tr>
    </table>
    <p><h:commandButton value="Register" action="confirm" /></p>
  </h:form>
</h:body>
</html>

5.2 - 浏览器显示的网页HTML：

<!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"><head>
  <title>A Simple JavaServer Faces Registration Application</title></head><body>
<form id="j_idt6" name="j_idt6" method="post" action="/JSF2.0_Template/faces/register.xhtml;jsessionid=db8f214e61a90013726b072f83eb" enctype="application/x-www-form-    urlencoded">
<input type="hidden" name="j_idt6" value="j_idt6" />

    <h2>JSF Registration App</h2>
    <h4>Registration Form</h4>
    <table>
      <tr>
        <td>First Name:</td>
        <td><input id="j_idt6:fname" type="text" name="j_idt6:fname" />
        </td>
      </tr>
          <tr>
        <td>Last Name:</td>
        <td><input id="j_idt6:lname" type="text" name="j_idt6:lname" />
        </td>
      </tr>
      <tr>
        <td>Sex:</td>
        <td><table id="j_idt6:sex">
    <tr>
<td>
<input type="radio" name="j_idt6:sex" id="j_idt6:sex:0" value="male" /><label     for="j_idt6:sex:0"> Male</label></td>
<td>
<input type="radio" name="j_idt6:sex" id="j_idt6:sex:1" value="female" /><label     for="j_idt6:sex:1"> Female</label></td>
    </tr>
</table>
        </td>
      </tr>
      <tr>
        <td>Date of Birth:</td>
        <td><input id="j_idt6:dob" type="text" name="j_idt6:dob" /> (mm-dd-yy)

        </td>
  </tr>
          <tr>
        <td>Email Address:</td>
        <td><input id="j_idt6:email" type="text" name="j_idt6:email" />
        </td>
      </tr>
      <tr>
        <td>Service Level:</td>
        <td><select name="j_idt6:j_idt21" size="1"> <option value="medium"     selected="selected">Medium</option>
    <option value="basic">Basic</option>
    <option value="premium">Premium</option>
</select>
        </td>
      </tr>
    </table>
    <p><input type="submit" name="j_idt6:j_idt26" value="Register" /></p><input         type="hidden" name="javax.faces.ViewState" id="javax.faces.ViewState"         value="-3247001945221977595:-4814431455900353505" autocomplete="off" />
</form></body>
</html>

我无法上传浏览器显示的PRINTSCREEN，但不会呈现标记。

问题：我的错误是什么？应该怎么做才能使Glassfish应用程序服务器正确呈现启用JSF 2.0的页面？我只需要一个简单的JSF 2.0模板来设置我的开发环境并将其作为JSF应用程序的起点。

谢谢！

1 个答案:

答案 0 :(得分：4)

与您所说的相反，JSF页面 正确呈现。根据获得的HTTP响应，生成的HTML输出看起来很好。正确解析和呈现所有JSF标记。如果JSF没有呈现任何内容，那么您可能已经在 View Source 中看到了原始的JSF源代码。

您的具体问题是浏览器未正确显示生成的HTML。当Content-Type标头错误时，可能会发生这种情况。 Content-Type标题告诉浏览器如何解释内容。该行为也取决于浏览器。例如，如果您向MSIE浏览器提供<DOCTYPE html ...> Content-Type application/xhtml+xml的{​​{1}}，则会严重破坏，甚至会出现令人困惑的另存为对话框。

在你的情况下，即使你没有清楚地陈述问题，也没有详细描述真实的反应，也没有显示截图（即使在不同的主机上），我认为你的具体问题就是这一切HTML显示为Content-Type text/plain。即您实际上将整个HTML源代码视为浏览器响应并将其误解为“JSF无法呈现响应”，而实际上您的浏览器并未将检索到的JSF生成的HTML源呈现为可视化表示。

默认情况下，右Content-Type由JSF实现本身设置，但它可以被服务器甚至前面的代理（如Apache HTTPD）覆盖，或者通过在JSF源中显式指定它码。我不确定您的具体情况的确切原因，但以下内容应强制JSF明确地将响应发送为text/html。

<f:view contentType="text/html">
    Put at least h:body here.
</f:view>

您可以在任何现代Web浏览器调试工具中检查响应标头。例如，在Firebug中：

enter image description here

对于具体问题，

无关，您的FacesServlet映射应该比单独使用此页面更通用，否则在提供Ajax javascripts等资源时可能会遇到麻烦。我推荐*.xhtml。我还建议基于更合适的教程重做配置。您可以在我们JSF wiki page的底部找到很好的教程。

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