尝试h:dataTable使用支持 bean显示 a 时出现以下异常
javax.faces.el.MethodNotFoundException: javax.el.MethodNotFoundException: /table.xhtml @29,36 action="#{user.editEmployee}": Method not found: com.jason.jsf.User@1df228e.editEmployee()
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:98)
javax.faces.component.UICommand.broadcast(UICommand.java:311)
javax.faces.component.UIData.broadcast(UIData.java:912)
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:781)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1246)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:77)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:114)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:308)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
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当我使用这些文件执行以下代码时,因为我是 jsf 的新手并且正在学习,请帮忙做一些解释
雇员.java
package com.jason.jsf;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
@ManagedBean(name = "employee", eager = true)
@SessionScoped
public class Employee {
private String Id, name;
private boolean canEdit;
public Employee() {
super();
// TODO Auto-generated constructor stub
}
public Employee(String id, String name) {
super();
Id = id;
this.name = name;
}
public String …Run Code Online (Sandbox Code Playgroud) 我米试图从它返回一个托管bean方法显示的图像byte[]与<o:graphicImage>使用omnifaces我部署omnifaces 2.1在WEB_INF/lib
这里是我的代码
注册.java
public byte[] getImage() throws IOException{
return Utils.toByteArray(Faces.getResourceAsStream("/resources/images/loader.gif"));
}
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主页.xhtml
<!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:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:o="http://omnifaces.org/ui">
<h:head>
<h:outputStylesheet library="css" name="style.css"></h:outputStylesheet>
<style>
.center {
align: center;
}
</style>
</h:head>
<h:body>
<h:form>
<table style="float:right;margin-top:5px;">
<tr><td><h:commandLink action="/user/second.xhtml" style="float:right;">Second page</h:commandLink></td>
<td><h:commandLink action="#{login.logout}" style="float:right;">Logout</h:commandLink></td></tr>
</table>
</h:form>
<h:form>
<div style="margin: auto;">
<h:messages globalOnly="true" infoStyle="display:none" styleClass="error" style="list-style-type:none;"/>
<h:messages globalOnly="true" errorStyle="display:none" styleClass="green" style="list-style-type:none;"/>
<h4 align="center">Welcome to JSF #{login.username} Dude</h4>
<h3 align="center">User Profile</h3> …Run Code Online (Sandbox Code Playgroud)