无法从一个 jsf 页面前进到另一个页面答案

【问题标题】：not able to move forward from one jsf page to another无法从一个 jsf 页面前进到另一个页面
【发布时间】：2013-06-18 03:57:45
【问题描述】：

我正在尝试构建一个简单的 jsf 应用程序，其中我将用户 ID 和名称作为参数并尝试在 ManagedBean 的帮助下显示在另一个页面上，但到目前为止我还没有成功，并且控制台也没有显示错误/exception，下面是我正在使用的文件列表。

AddUser.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="f"  uri="http://java.sun.com/jsf/core"%>
<%@ taglib prefix="h"  uri="http://java.sun.com/jsf/html"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
 <title>Add New User Form</title>
</head>
<body>
<f:view>
    <h:form>
        <h:panelGrid border="1" columns="2">
            <h:outputText value="ID"></h:outputText>
            <h:inputText value="#{userBean.id}" required="true">
                <f:validateLongRange minimum="1" maximum="500"/>
            </h:inputText>
            <h:outputText value="Name"></h:outputText>
            <h:inputText value="#{userBean.name}"></h:inputText>
            <h:commandButton action="#{userBean.addUser}"
                value="Add Customer"></h:commandButton>
        </h:panelGrid>
    </h:form>
</f:view>
</body>
</html>

ManagedBean (UserBean)

package com.sapient.bean;

import java.io.Serializable;

public class UserBean implements Serializable{
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    private int id;
    private String name;

    //Action method to add user
    public String addUser() {
        return "success";
    }  
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
}

列表用户

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="f"  uri="http://java.sun.com/jsf/core"%>
<%@ taglib prefix="h"  uri="http://java.sun.com/jsf/html"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <title>List of Users</title>
</head>
<body>
<f:view>
    <h:form>
        <h:outputText value="User #{userBean.name} is added successfully.">
        </h:outputText>
    </h:form>
</f:view>
</body>
</html>

FacesConfig.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_1_2.xsd"
    version="1.2">
    <managed-bean>
        <managed-bean-name>userBean</managed-bean-name>
        <managed-bean-class>com.sapient.bean.UserBean</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>
    <navigation-rule>
        <display-name>AddUser</display-name>
        <from-view-id>/AddUser.jsp</from-view-id>
        <navigation-case>
            <from-outcome>success</from-outcome>
            <to-view-id>/ListUser.jsp</to-view-id>
        </navigation-case>
    </navigation-rule>
</faces-config>

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>Archetype Created Web Application</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>
    <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
    <param-value>resources.application</param-value>
  </context-param>
  <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>
    <description>
    This parameter tells MyFaces if javascript code should be allowed in
    the rendered HTML output.
    If javascript is allowed, command_link anchors will have javascript code
    that submits the corresponding form.
    If javascript is not allowed, the state saving info and nested parameters
    will be added as url parameters.
    Default is 'true'</description>
    <param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
    <param-value>true</param-value>
  </context-param>
  <context-param>
    <description>
    If true, rendered HTML code will be formatted, so that it is 'human-readable'
    i.e. additional line separators and whitespace will be written, that do not
    influence the HTML code.
    Default is 'true'</description>
    <param-name>org.apache.myfaces.PRETTY_HTML</param-name>
    <param-value>true</param-value>
  </context-param>
  <context-param>
    <param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name>
    <param-value>false</param-value>
  </context-param>
  <context-param>
    <description>
    If true, a javascript function will be rendered that is able to restore the
    former vertical scroll on every request. Convenient feature if you have pages
    with long lists and you do not want the browser page to always jump to the top
    if you trigger a link or button action that stays on the same page.
    Default is 'false'
</description>
    <param-name>org.apache.myfaces.AUTO_SCROLL</param-name>
    <param-value>true</param-value>
  </context-param>
</web-app>

请提供帮助，我们将不胜感激。
谢谢

【问题讨论】：

您的主要问题是什么？无法移动到 ListUser.jsp 或 #{userBean.name} 未显示在您的 ListUser.jsp 页面上
无法移动到 ListUser.jsp 页面
请不要用[jsf-2]标记JSF 1.x问题。

标签： jsf

【解决方案1】：

这是AddUser.jsp中存在的代码中存在问题的部分

   <h:inputText value="#{userBean.id}" required="true">
                <f:validateLongRange minimum="1" maximum="500"/>
            </h:inputText>

在这里，您在 <h:inputText../> 中放置了一个 required="true"，我非常确定您没有在 id 字段中提供值，而您只是通过仅提供 name 来提交表单。所以这就是为什么您的表单未提交
解决方案：
现在您有两个解决方案
1) 甚至不要更改代码中的一个单词，只需在 id 文本字段中赋予价值。（不要认为 0）是您在 id 字段中看到的默认值是一个将通过所需字段场景的值
2) 在此处删除 required="true" 部分表单 <h:inputText value="#{userBean.id}" required="true"> ，您将看到它正在运行

【讨论】：

嘿，问题仍然存在，首先我为 0 以外的 id 赋值但它不起作用，然后我删除了你所说的 required="true" 但它仍然不起作用。请帮忙