我在 SAP NetWeaver AS 7.31 上使用 Richfaces 3.3.4 final 和 JSF 1.2。
现在我面临一些从 ah:outputText 中的 Rich:tree 动态显示选定节点的问题。selectedNodeListener 被正确调用,节点的名称保存在字符串中,但我的 h:outputText 仅在页面刷新时刷新,而不是像在 Showcases 示例中那样在选择时刷新(http://showcase-rf3.richfaces.org /richfaces/tree.jsf?tab=model&cid=26981)。
有谁知道这是否是上述设置的常见问题,还是我只是遗漏了什么?据我所知,SAP NetWeaver 不在受支持的服务器列表中,但它符合 JEE5。这可能是原因吗?
我简化了 Richfaces Showcases 中的示例,以在小型环境中重现问题。这是一些代码:
简单树豆.java
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.richfaces.component.html.HtmlTree;
import org.richfaces.event.NodeSelectedEvent;
import org.richfaces.model.TreeNode;
import org.richfaces.model.TreeNodeImpl;
public class SimpleTreeBean {
private TreeNode rootNode = null;
private List<String> selectedNodeChildren = new ArrayList<String>();
private String nodeTitle;
private void loadTree() {
rootNode = new TreeNodeImpl();
TreeNodeImpl rt = new TreeNodeImpl();
rt.setData("Root");
rootNode.addChild(1, rt);
for(int i = 1; i <= 5; i++){
TreeNodeImpl child = new TreeNodeImpl();
child.setData("Child "+i);
rt.addChild(i, child);
}
}
public void processSelection(NodeSelectedEvent event) {
HtmlTree tree = (HtmlTree) event.getComponent();
nodeTitle = (String) tree.getRowData();
selectedNodeChildren.clear();
TreeNode currentNode = tree.getModelTreeNode(tree.getRowKey());
if (currentNode.isLeaf()) {
selectedNodeChildren.add((String) currentNode.getData());
} else {
Iterator<Map.Entry<Object, TreeNode>> it = currentNode
.getChildren();
while (it != null && it.hasNext()) {
Map.Entry<Object, TreeNode> entry = it.next();
selectedNodeChildren.add(entry.getValue().getData().toString());
}
}
}
public TreeNode getTreeNode() {
if (rootNode == null) {
loadTree();
}
return rootNode;
}
public String getNodeTitle() {
return nodeTitle;
}
public void setNodeTitle(String nodeTitle) {
this.nodeTitle = nodeTitle;
}
}
测试.jsp:
<%@taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@taglib uri="http://richfaces.org/rich" prefix="rich"%>
<html>
<head>
<title>TestTree</title>
</head>
<body>
<f:view>
<h:form>
<h:panelGrid columns="2" width="100%" columnClasses="col1,col2">
<rich:tree style="width:300px" nodeSelectListener="#{simpleTreeBean.processSelection}"
reRender="selectedNode" ajaxSubmitSelection="true" switchType="client"
value="#{simpleTreeBean.treeNode}" var="item" ajaxKeys="#{null}">
</rich:tree>
<h:outputText escape="false" value="Selected Node: #{simpleTreeBean.nodeTitle}" id="selectedNode" />
</h:panelGrid>
</h:form>
</f:view>
</body>
</html>
faces-config.xml 的重要部分:
<?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_1_2.xsd"
version="1.2">
<managed-bean>
<managed-bean-name>simpleTreeBean</managed-bean-name>
<managed-bean-class>
com.realcore.web.beans.SimpleTreeBean
</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
</faces-config>
<</faces-config>/faces-config>
此外,我的 faces-config 中也有一些验证器和转换器。但我认为这对于这个问题并不重要。
这是 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_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>SstSapWEB</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>login.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<!-- Making the RichFaces skin spread to standard HTML controls -->
<context-param>
<param-name>org.richfaces.CONTROL_SKINNING</param-name>
<param-value>enable</param-value>
</context-param>
<!-- Defining and mapping the RichFaces filter -->
<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>
<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>
</web-app>
这个简单的示例也不起作用。
我不知道如何修复或解决此问题。任何帮助是极大的赞赏。
问候,
丹尼尔