Question

以下是我的项目网址。 http://localhost:8080/springwebflow/loginFlow;jsessionid=k7338gzuvyc2sk36axkzhe9r?execution=e1s1

springwebflow / loginFlow 路径如何运作？用这条路径我的display_login.jsp怎么来？

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Spring Web Flow</display-name>

  <servlet>
        <servlet-name>login</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>
                /WEB-INF/config/login-servlet-config.xml
                /WEB-INF/config/login-webflow-config.xml
                /WEB-INF/config/spring-config.xml
            </param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>login</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

的web.xml

<?xml version="1.0" encoding="UTF-8" ?>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"

    xsi:schemaLocation="http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
    http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <mvc:annotation-driven />
    <context:component-scan base-package="com.studytrails.tutorials.springwebflow" />

    <!--Define FlowHandlerMapping to tell DispatcherServlet (in web.xml)
          to send flow requests to Spring Web Flow -->
    <bean class="org.springframework.webflow.mvc.servlet.FlowHandlerMapping">
        <property name="flowRegistry" ref="loginFlowRegistry" />
    </bean>

    <!-- Define FlowHandlerAdapter to handle Spring Web Flow request call.
            This is the Controller class in Spring Web Flow -->
    <bean class="org.springframework.webflow.mvc.servlet.FlowHandlerAdapter">
        <property name="flowExecutor" ref="loginFlowExecutor" />
    </bean>

</beans>

登录-servlet的config.xml中

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:flow="http://www.springframework.org/schema/webflow-config"
    xsi:schemaLocation="http://www.springframework.org/schema/webflow-config
                        http://www.springframework.org/schema/webflow-config/spring-webflow-config-2.0.xsd
                        http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

        <!-- Define the flow executor responsible for executing login web flow -->              
        <flow:flow-executor id="loginFlowExecutor" flow-registry="loginFlowRegistry"/>

        <!-- Define the registry that holds references to all the flow related XML configuration-->
        <flow:flow-registry id="loginFlowRegistry">
            <flow:flow-location id="loginFlow" path="/WEB-INF/flows/login-flow.xml"/>
        </flow:flow-registry>       

</beans>

登录-的Webflow-config.xml中

<%@ page isELIgnored ="false" %>

<html xmlns:form="http://www.springframework.org/tags/form">

    <body>
        <form action="${flowExecutionUrl}&_eventId=loginCredentialsEntered" method="post"> 

            <input type="hidden" name="_flowExecutionKey" value="${flowExecutionKey}"/>
            <br/>
            Enter login name as <b>alba</b> and password as <b>pass</b> for successfull login.
            <br/>
            Use any other login name and password for login error.
            <br/>
            <br/>
            <table>
                <tr>
                    <td>Login Name:</td>
                    <td><input type="text" name="loginName"/></td>
                </tr>
                <tr>
                    <td>Password: </td>
                    <td><input type="text" name="password"/></td>
                </tr>
            </table>

            <br/>           
            <input type="submit" value="Login" />

        </form>
    </body>
</html>

display_login.jsp

PFA是我的文件，请您解释一下流量如何与网址一起使用。

Answer 1

因此，如果我理解了您的问题，您希望使用流程显示您的jsp。 Normaly，我们使用这样的层次结构：

VUE
   -src /主/ JAVA
         -controllers
   -src /主/资源
           -Meta-INF
             -flows
                  -page文件夹
                      -page-flow.xml
             -resources
                   -page文件夹
                      -page.xhtml

每个文件夹都有一个file.xml，你可以添加一个subFolder，然后把你的xml放在上面。对于你的流程，它应该是这样的：

  <?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"
parent="default">

<view-state id="myPage" view="/page-folder/page.xhtml">
    <on-entry>
        <evaluate expression="pageController.init()"></evaluate>
    </on-entry>
    <transition on="cancel" to="close"/> 
   </view-state>

   </flow>

如果你想知道如何使用spring flow渲染视图： https://spring.io/blog/2007/11/15/the-spring-web-flow-2-0-vision

如果查看官方文档，情况会更好。

Answer 2

首先，您可以添加通配符模式以指示（流位置模式），该模式将创建有关如何注册流的规则。这将使您能够使用1个规则注册多个流，而不是手动对每个流进行硬编码。（注意：以下是注册流程的非官方“标准和最佳实践”方式）

<!-- The registry of executable flow definitions --> 
    <webflow:flow-registry id="flowRegistry" base-path="/WEB-INF/flows" flow-builder-services="flowBuilderServices">
        <webflow:flow-location-pattern value="/**/*-flow.xml" />
    </webflow:flow-registry>

所以上述规则规定：

在“/ WEB-INF / flows”目录中开始扫描（确保它存在）
对于任何子目录，查找具有后缀“-flow.xml”
对于每个匹配注册，此流程将转至flow-registry

执行此操作后，您可以通过应用程序中任何位置映射到的URL导航到已注册的流。

使用示例流程：

/WEB-INF/flows/path/to/process1/reservation-flow.xml   // note: ends in "-flow.xml"

可通过以下的http get请求访问：

http://(my-web-server-ip):(port)/path/to/process1

（注意：“flow”不包含在url路径中，因为我们将其设置为flow-registry定义中base-path =“/ WEB-INF / flows”属性的一部分，并注意流文件名在请求中根本不使用流中定义的目录）

有关详细信息，请参阅此答案：Webflow Flow Location By URI?

url如何在Spring Web流程中工作？

2 个答案: