Spring Web Flow:无法获得第二个视图

时间:2014-04-14 18:03:46

标签: spring jsp spring-mvc spring-webflow

我正在使用Spring Web Flow进行注册过程。我有完美的流程的第一页,但是当我点击应该带你到第二页的按钮时,我再次得到了流程的第一页。正如您将在代码中看到的那样,我在标签上有flowExecutionKey,当我点击按钮时它从e1s1到e2s1,所以不是引导我进入流的第二个视图,而是开始一个新的流程,我想

以下是代码:

所以,我有这个flow.xml:

<?xml version="1.0" encoding="UTF-8"?>
<flow xmlns="http://www.springframework.org/schema/webflow"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/webflow
    http://www.springframework.org/schema/webflow/spring-webflow-2.0.xsd" start-state="inicio">
    <var name="proyecto" class="myPackage.MyModelClass"/>
<view-state id="inicio" view="inicio" model="proyecto">
    <binder>
        <binding property="titulo"/>
        <binding property="descripcion"/>
        <binding property="ciudad"/>

    </binder>
    <transition on="gotoPageTwo" to="flow2"></transition>

</view-state>
<view-state id="flow2" view="flow2" model="proyecto">
    <transition on="gotoPageThree" to="flow3"></transition>
    <transition on="goBack" to="inicio"></transition>
</view-state>
<view-state id="flow3" view="flow3" model="proyecto">
    <transition on="gotoPageFour" to="fin"></transition>
    <transition on="goBack" to="flow2"></transition>
</view-state>
<end-state id="fin" view="final">
</end-state>

这是我的inicio.jsp:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ page session="true" %>
<!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">
<link href="/myapp/resources/css/main.css" rel="stylesheet" type="text/css">
<link href="/myapp/resources/css/tcal.css" rel="stylesheet" type="text/css">
<script type="text/javascript" src="/myapp/resources/scripts/tcal.js"></script>
<title>Paso 1</title>
</head>
<body>
<form method="post" action="inicio.do">
<input type="hidden" name="_flowExecutionKey" value="${flowExecutionKey}">
<label>flowExecutionKey: ${flowExecutionKey}</label>
<table>
<tr>
    <td>
        <label class="textform">Título del proyecto</label>
    </td>
    <td>
        <input type="text" name="titulo">
    </td>
</tr>
<tr>
    <td>
        <label class="textform">Descripción</label>
        </td>
    <td>
        <input type="text" name="descripcion">
    </td>
</tr>
<tr>
    <td>
        <label class="textform">Ciudad del proyecto</label>
    </td>
    <td>
        <input type="text" name="ciudad">
    </td>
</tr>

<tr>
    <td>
      <input type="submit" value="Siguiente" name="_eventId=gotoPageTwo">
    <%--<a href="${flowExecutionUrl}&_eventId=gotoPageTwo&_flowExecutionKey=${flowExecutionKey}"> Siguiente página</a> 
         <input type="submit" value="Siguiente" name="eventId=gotoPageTwo">
          <input type="submit" value="Siguiente" name="${flowExecutionUrl}&_eventId=gotoPageTwo">--%>
    </td>
</tr>

如您所见,我尝试发送gotoPageTwo的eventId,如flow.xml中所述。

与servlet-context.xml上的Spring Web Flow相关的bean:

<beans:bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">

    <beans:property name="mappings">
    <beans:value>inicio.do=flowController</beans:value>
    </beans:property>
    <beans:property name="alwaysUseFullPath" value="true"></beans:property>
</beans:bean>
<beans:bean id="flowcontroller" class="org.springframework.webflow.mvc.servlet.FlowController">
<beans:property name="flowExecutor" ref="flowExecutor"></beans:property>
</beans:bean>
<webflow:flow-executor id="flowExecutor" flow-registry="flowRegistry"/>
<webflow:flow-registry id="flowRegistry" flow-builder-services="flowBuilderServices"> 
        <webflow:flow-location id="inicio" path="/WEB-INF/flujos/flow.xml"/> 
</webflow:flow-registry>   
<webflow:flow-builder-services id="flowBuilderServices" 
        view-factory-creator="viewFactoryCreator"/>
        <beans:bean id="viewFactoryCreator" class="org.springframework.webflow.mvc.builder.MvcViewFactoryCreator">
        <beans:property name="viewResolvers">
        <beans:list>
            <beans:ref bean="viewResolver"/>
        </beans:list>
        </beans:property>
        </beans:bean>
 <beans:bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <beans:property name="prefix" value="/WEB-INF/views/" />
    <beans:property name="suffix" value=".jsp" />
</beans:bean>

为什么会这样?我的错误在哪里?注释中的第一个链接可以工作并显示第二个视图,但我认为它不会发送表单,所以我没有数据,它是一个链接,而不是一个按钮:

<a href="${flowExecutionUrl}&_eventId=gotoPageTwo&_flowExecutionKey=${flowExecutionKey}"> Siguiente página</a>

其他评论是我尝试过的,但不起作用。

谢谢!

1 个答案:

答案 0 :(得分:1)

您需要将代码更改为:

    <td>
        <input type="submit" value="Siguiente" name="_eventId_gotoPageTwo">
    </td>

当您使用anchor href时,您将_eventId作为参数传递,因此您可以使用_eventId = gotoPageTwo

而现在&#34; _eventId&#34;以按钮字段的名称编码,因此在提交表单时,&#34; gotoPageTwo&#34;事件将在流程的当前状态中发出信号。

另外,将表单更改为

    <form:form method="post"  modelAttribute="proyecto">