Question

web.xml

<!-- JavaServer Faces -->
<context-param>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>server</param-value>
</context-param>
<context-param>
    <param-name>javax.faces.CONFIG_FILES</param-name>
    <param-value>/WEB-INF/faces-config.xml,/WEB-INF/faces-managed-beans.xml,/WEB-INF/faces-navigation.xml</param-value>
</context-param>
<context-param>
    <param-name>org.richfaces.SKIN</param-name>
    <param-value>blueSky</param-value>
</context-param>
<context-param>
    <param-name>org.richfaces.CONTROL_SKINNING</param-name>
    <param-value>enable</param-value>
</context-param>
<context-param>
    <param-name>com.sun.faces.validateXml</param-name>
    <param-value>true</param-value>
</context-param>
<filter>
    <display-name>RichFaces Filter</display-name>
    <filter-name>richfaces</filter-name>
    <filter-class>org.ajax4jsf.Filter</filter-class>
</filter>
<filter-mapping>
    <filter-name>richfaces</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>INCLUDE</dispatcher>
</filter-mapping>
<listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>
<!-- Faces Servlet -->
<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
    <listener-class>
        org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<!-- Faces Servlet Mapping -->
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<login-config>
    <auth-method>BASIC</auth-method>
</login-config>

faces-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<faces-config version="1.2" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xi="http://www.w3.org/2001/XInclude" 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_1_2.xsd">
<validator>
    <validator-id>com.test..view.validator.Regex</validator-id>
    <validator-class>com.test..view.validator.regex.RegexValidator</validator-class>
</validator>
<application>
    <locale-config>
        <default-locale>en</default-locale>
    </locale-config>
    <message-bundle>com.test..view.resources.bundle.Messages</message-bundle>
</application>
</faces-config>

JSP文件

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>

<html> 
<head>
</head>
<body onload="alert(\"test\")">
    It works <hr/>
<f:view>
<h:form>
<ui:repeat value="${buildVehicleBean.buildVehicleBO.allVehicles}" var="var1">
    <h:outputText value="#{var1.modelLineName}"/><br/>
</ui:repeat>

</h:form>
</f:view>
</body>

</html>

当我在浏览器中查看源代码时，我看到了

...
<ui:repeat value="[com.test.model.bo.CarBO@3f9ba5,
com.test.model.bo.CarBO@38662,
com.test.model.bo.CarBO@16b9c59,
com.test.model.bo.CarBO@1e5bbb0,
com.test.model.bo.CarBO@1855620,
com.test.model.bo.CarBO@d984ff,
com.test.model.bo.CarBO@1dd4000,
com.test.model.bo.CarBO@100bb12,
com.test.model.bo.CarBO@f9d8ce]" var="var1">


<br/>
</ui:repeat>
...

正如你在ui中看到的只是'br'标签一样：重复。

对我来说这似乎很简单，显然我在某处遗漏了某些东西，很难找到它。如果我使用像常量值这样简单的东西就可以了

<h:outputText value="#{12345}"/><br/>
<h:outputText value="#{buildVehicleBean.testDouble}"/><br/>

如果我在下一行中使用'＃'而不是'$'，则会出现错误

<ui:repeat value="${buildVehicleBean.buildVehicleBO.allVehicles}" var="var1">

我是JSF的新手，来自JSP＆amp; Struts背景。

Answer 1

<ui:repeat>标记是Facelets视图技术的一部分。但是你仍然在使用古老的JSP视图技术。它们不能一起使用。您不能在JSP中使用Facelets标记，反之亦然。基本上，Facelets是JSP的继承者。

您有两个选择：

用Facelets替换JSP。如果你有很多现有的JSP页面，这是一项非常有用的工作。有关参考，请查看以下链接：
- Facelets 1.x developer guide
- Migrating from JSF 1.2 to JSF 2.0（对于这种情况，还有升级到JSF2的空间）
请改用JSTL <c:forEach>或RichFaces'<a4j:repeat>。它们提供类似的语法和功能。您应该只考虑JSTL在视图构建期间运行，而RichFaces在运行期间运行。根据您的web.xml，您似乎已经在使用RichFaces了。所以只需在JSP顶部声明a4j taglib并使用<a4j:repeat>，如下所示：
```
<%@taglib prefix="a4j" uri="http://richfaces.org/a4j" %>
...
<a4j:repeat value="#{buildVehicleBean.buildVehicleBO.allVehicles}" var="var1">
    <h:outputText value="#{var1.modelLineName}"/><br/>
</a4j:repeat>
```

ui：repeat不为我呈现数据

1 个答案: