我将使用JSF进行Web应用程序，只是为了获取JSF中的值并将其放入bean中，反之亦然。我想我已经做好了一切，但当我启动服务器并尝试访问我的第一页时，我收到以下错误
SEVERE: Servlet.service() for servlet [jsp] in context with path [/SimpleJSF] threw exception [/greeting.jsp (line: 20, column: 85) #{...} is not allowed in template text] with root cause
org.apache.jasper.JasperException: /greeting.jsp (line: 20, column: 85) #{...} is not allowed in template text
我正在使用带有JDK 1.6的Eclipse Helios，apache Tomcat 7和JSF 2.0框架
这是我的代码段
greeting.jsp中
<?xml version="1.0" encoding="ISO-8859-1" ?>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!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:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
<title>Guess Number Facelets Application</title>
</h:head>
<h:body>
<h:form>
<h2>
Hi, my name is Duke. I am thinking of a number from
0 to 10.
Can you guess it?
</h2>
<p><h:inputText id="userNo" title="Type a number from 0 to 10:" value="#{resultNumber.userNumber}">
<f:validateLongRange minimum="#{resultNumber.minimum}" maximum="#{resultNumber.maximum}"/>
</h:inputText>
<h:commandButton id="submit" value="Submit" action="response.jsp"/>
</p>
<h:message showSummary="true" showDetail="false" style="color: #d20005; font-family: 'New Century Schoolbook', serif; font-style: oblique; text-decoration: overline"
id="errors1"
for="userNo"/>
</h:form>
</h:body>
</html>
的response.jsp
<?xml version="1.0" encoding="ISO-8859-1" ?>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!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:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Insert title here</title>
<h:head>
<title>Guess Number Facelets Application</title>
</h:head>
<h:body>
<h:form>
<h2>
<h:outputText id="result" value="#{resultNumber.response}"/>
</h2>
<h:commandButton id="back" value="Back" action="greeting.xhtml"/>
</h:form>
</h:body>
</html>
Java bean， ResultNumber.java
package guessNumber;
import java.util.Random;
import javax.ejb.LocalBean;
import javax.ejb.Stateless;
/**
* Session Bean implementation class ResultNumber
*/
@Stateless(mappedName = "resultNumber")
@LocalBean
public class ResultNumber {
Integer randomInt = null;
Integer userNumber = null;
String response = null;
private long maximum=10;
private long minimum=0;
public ResultNumber() {
Random randomGR = new Random();
randomInt = new Integer(randomGR.nextInt(10));
System.out.println("Duke's number: " + randomInt);
}
public void setUserNumber(Integer user_number) {
userNumber = user_number;
}
public Integer getUserNumber() {
return userNumber;
}
public String getResponse() {
if ((userNumber != null) && (userNumber.compareTo(randomInt) == 0)) {
return "Yay! You got it!";
} else {
return "Sorry, " + userNumber + " is incorrect.";
}
}
public long getMaximum() {
return (this.maximum);
}
public void setMaximum(long maximum) {
this.maximum = maximum;
}
public long getMinimum() {
return (this.minimum);
}
public void setMinimum(long minimum) {
this.minimum = minimum;
}
}
现在是配置文件
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" version="3.0">
<display-name>SimpleJSF</display-name>
<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>
<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>
<listener>
<listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>
<welcome-file-list>
<welcome-file>faces/greeting.jsp</welcome-file>
</welcome-file-list>
</web-app>
刻面的config.xml
<?xml version="1.0" encoding="UTF-8"?>
<faces-config
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_0.xsd"
version="2.0">
<managed-bean>
<managed-bean-name>resultNumber</managed-bean-name>
<managed-bean-class>guessNumber.ResultNumber</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
</faces-config>
答案 0 :(得分：1)
在JSF 2.0中，JSP已被弃用为视图技术，并由Facelets取代。您需要将.jsp个文件重命名为.xhtml个文件。在您的情况下，您还需要删除两个JSP中的整个<%@ page %>行。然后，您需要使用网址中的.xhtml扩展名调用它们。
此外，您还需要从ConfigureListener中删除web.xml，并且需要将JSP欢迎文件重命名为XHTML。我还建议使用*.xhtml代替/faces/*作为FacesServlet网址格式。这样，您无需每次在网址中添加/faces/*。最后，您需要从faces-config.xml中删除bean，并按如下方式注释bean，而不是那些javax.ejb注释：
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
@ManagedBean
@RequestScoped
public class ResultNumber {
毕竟，您似乎正在阅读JSF 1.x教程并将其与JSF 2.x混合使用。您应该非常小心JSF版本的JSF书籍/教程，您正在阅读目标。从JSF 2.0开始，很多事情都以不同的方式完成。
答案 1 :(得分：0)
您正在使用.jsp文件，因此您应手动导入taglib。在开始的html标记正上方添加这两行。
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>