使用JSF2.0&的安装项目素面 [英] Setup Project with JSF2.0 & Prime Faces
问题描述
我尝试使用主面孔库设置JSF项目 当我运行此安装程序时，它显示以下错误
I am try to setup JSF project with prime faces library When I run this setup it shows be following error
org.apache.jasper.JasperException: javax.servlet.ServletException: null source
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:54
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:417)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
我无法找出背后的原因.
I did not able to find out reason behind it .
following is by setup
以下是我包含在web-inf/lib中的库
1. jsf-api-2.0.3.jar
2. jsf-impl-2.0.3.jar
3. jstl-1.0.2.jar
4. primefaces-3.4.jar
Folloing are the library I included into web-inf/lib
1. jsf-api-2.0.3.jar
2. jsf-impl-2.0.3.jar
3. jstl-1.0.2.jar
4. primefaces-3.4.jar
以下是进入web.xml文件的内容
Following are the entrires into web.xml file
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</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>primefaces.skin</param-name>
<param-value>none</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>*.jsf</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<listener>
<listener-class>
com.nsf.ecap.web.base.ECapStartUpServlet
</listener-class>
</listener>
</web-app>
login.xhtml
login.xhtml
<h:body>
<CENTER>
<h:panel header="Login Form">
<h:Form>
<h:PanelGrid columns="2" cellpadding="2">
<h:outputLabel value="UserName" for="#{loginBBean.userInfo.username}"> </h:outputLabel>
<h:inputText value="#{loginBBean.userInfo.username}" label="UserName"> </h:inputText>
<h:outputLabel value="Password" for="#{loginBBean.userInfo.password}"></h:outputLabel>
<h:inputSecret value="#{loginBBean.userInfo.password}"></h:inputSecret>
<h:commandButton value="Login" type="submit" action="#{loginBBean.doLogin}"></h:commandButton>
</h:PanelGrid>
<h:messages>
</h:messages>
</h:Form>
</h:panel>
</CENTER>
</h:body>
</html>
index.jsp
index.jsp
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<jsp:forward page="jsp/login/login.jsf"/>
</body>
</html>
推荐答案
我的JSP'index.jsp'起始页"?请屏蔽/忽略/丢弃您正在阅读的教程. 这完全是在使您感到困惑，并教给您不良做法.
"My JSP 'index.jsp' starting page"? Please block/ignore/throwaway that tutorial you're reading now. It's only completely confusing you and teaching you bad practices.
关于您的库列表:
下面是我包含在web-inf/lib中的库
Folloing are the library I included into web-inf/lib
- jsf-api-2.0.3.jar
- jsf-impl-2.0.3.jar
- jstl-1.0.2.jar
- primefaces-3.4.jar
首先，JSTL版本是错误的.它至少应为JSTL 1.1或最好为1.2. EL(表达式语言，那些${}/#{})东西否则将无法正常工作.删除jstl-1.0.2.jar并放入 jstl-1.2.jar 就位.
First of all, the JSTL version is wrong. It should be at least JSTL 1.1 or preferably 1.2. The EL (expression language, those ${}/#{}) things would otherwise fail to work. Remove jstl-1.0.2.jar and put jstl-1.2.jar in place.
看起来还不错.令您惊讶的是，您使用的JSF API/impl版本已有2年以上，而您的PrimeFaces版本却比较新(不到2周).我将那些JSF API/impl版本也调整为最新可用.当前已经在
Further it looks okay. It only surprises me that you've more than 2 years old JSF API/impl versions while you've a fairly recent (less than 2 weeks) PrimeFaces version. I'd align those JSF API/impl versions as well to be the latest available. It's currently already at 2.1.13 (note: it's now composed of only one JAR file javax.faces.jar instead of two JAR files).
关于您的web.xml:
<web-app version="2.5" 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_2_5.xsd">
这已声明符合Servlet 2.5规范，已有6年的历史了.您确定您正在运行这样一个过时的容器吗?考虑到JSF和JSTL库的存在，我假设您正在使用Tomcat.当前的Tomcat版本7.x已经存在2年多了，并且与Servlet 3.0兼容.您应该声明web.xml以匹配目标容器的最高支持版本.
This is declared conform Servlet 2.5 spec which is over 6 years old already. Are you sure that you're running such an outdated container? Given the presence of the JSF and JSTL libraries, I assume that you're using Tomcat. The current Tomcat version, 7.x, exist more than 2 years already and is Servlet 3.0 compatible. You should declare your web.xml to match the highest supported version of the target container.
<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">
此外，那些javax.faces.STATE_SAVING_METHOD和javax.faces.DEFAULT_SUFFIX条目已经代表了默认值.只需摆脱它们以将噪音降至最低.
Further, those javax.faces.STATE_SAVING_METHOD and javax.faces.DEFAULT_SUFFIX entries represent the default values already. Just get rid of them to minimize noise.
关于您的login.xhtml:
<h:Form>
<h:PanelGrid columns="2" cellpadding="2">
标签名称区分大小写. <h:Form>和<h:PanelGrid>根本不存在.是<h:form>和<h:panelGrid>.
Tag names are case sensitive. The <h:Form> and <h:PanelGrid> doesn't exist at all. It are <h:form> and <h:panelGrid>.
<CENTER>
虽然不是立即有问题，但是自1998年以来，已弃用此HTML元素，而使用CSS.同样，以大写字母代替<center>来看待它，这对于90年代以前的HTML风格来说是非常典型的，这不会给我留下您正在阅读最新，最正确的书籍/教程来学习Web开发的印象.您应该确保您的学习资源是最新的.
While not immediately a problem, but this HTML element is deprecated since 1998 in favor of CSS. Also, seeing it in uppercased flavor instead of <center>, which is very typical for pre-90's HTML style, doesn't give me the impression that you're reading the most recent and right books/tutorials to learn web development. You should assure that your learning resources are up to date.
关于您的index.jsp:这完全没有用.完全将其删除.只需将您的web.xml更改为
As to your index.jsp: this is completely useless. Remove it altogether. Just change your web.xml from
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
到
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>login.xhtml</welcome-file>
</welcome-file-list>
，这样login.xhtml就会显示为首页"当您在网络浏览器中访问/时.请注意，您应该也不再需要*.jsf URL模式.
and this way login.xhtml will show up as "home page" when you access / in your webbrowser. Note that you shouldn't and don't need *.jsf URL pattern anymore.
- 我们的JSF Wiki页面-在底部，您可以找到不错的JSF 2.0资源
- Our JSF wiki page - at the bottom you can find decent JSF 2.0 resources
这篇关于使用JSF2.0&的安装项目素面的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
