1. Johngo学长首页
  2. 技术点详细复盘专题
  3. 人工智能

使用Spring Web Flow—Spring Web Flow的配置

• 人工智能 • 阅读 68

Spring Web Flow 是 Spring 的一个子项目，其最主要的目的是解决跨越多个请求的、用户与服务器之间的、有状态交互问题，比较适合任何比较复杂的、有状态的、需要在多个页面之间跳转的业务过程。

最常见的流程就是购物的流程了:

加入购物车–>查看购物车–>提交订单–>付款–>返回首页:

项目结构如图所示:(由于是jsp之间互相的跳转,我们这边没有加入java文件夹)

mvc-dispatcher.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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemalocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd
           http://www.springframework.org/schema/mvc
           http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 配置包扫描器 -->
    <context:component-scan base-package="com.wrh.controller">
    <!-- 配置注解驱动 -->
    <mvc:annotation-driven>
    <import resource="webmvc-config.xml">
    <import resource="webflow-config.xml">
</import></import></mvc:annotation-driven></context:component-scan></beans>

webflow-config.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:webflow="http://www.springframework.org/schema/webflow-config" xsi:schemalocation=" http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    http://www.springframework.org/schema/webflow-config
    http://www.springframework.org/schema/webflow-config/spring-webflow-config-2.0.xsd">
    <!-- 装配流程执行期：为用户创建和启动一个流程执行实例，不负责加载流程定义-->
    <webflow:flow-executor id="flowExecutor">
    <!-- 配置流程注册表，其功能为：负责加载流程定义-->
    <!-- 所有 flow的定义文件它的位置在这里进行配置， flow-builder-services 用于配置 flow 的特性 -->
    <webflow:flow-registry id="flowRegistry" flow-builder-services="flowBuilderServices">
        <webflow:flow-location path="/WEB-INF/flows/shopping.xml" id="shopping">
        <!-- 在这个声明中，流程注册表会在该path下查找流程定义-->
    </webflow:flow-location></webflow:flow-registry>
    <!--Web Flow 中的视图通过 MVC 框架的视图技术来呈现 -->
    <webflow:flow-builder-services id="flowBuilderServices" view-factory-creator="mvcViewFactoryCreator">
    <!-- 指明 MVC 框架的 view resolver ，用于通过 view 名查找资源 -->
    <bean id="mvcViewFactoryCreator" class="org.springframework.webflow.mvc.builder.MvcViewFactoryCreator">
        <property name="viewResolvers" ref="viewResolver">
    </property></bean>
</webflow:flow-builder-services></webflow:flow-executor></beans>

webmvc-config.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" xsi:schemalocation="
    http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView">
        <property name="prefix" value="/WEB-INF/views/">
        <property name="suffix" value=".jsp">
    </property></property></property></bean>
    <!--此配置与下面没有注释掉的代码功能一样
    <bean id="flowHandlerMapping" class="org.springframework.webflow.mvc.servlet.FlowHandlerMapping">
        <property name="flowRegistry" ref="flowRegistry"/>
        <property name="defaultHandler">
            <bean class="org.springframework.web.servlet.mvc.UrlFilenameViewController" />
        </property>

    </bean>
    <bean id="flowHandlerAdapter" class="org.springframework.webflow.mvc.servlet.FlowHandlerAdapter">
        <property name="flowExecutor" ref="flowExecutor"/>
    </bean>

    -->
    <bean id="viewMappings" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <!-- /shopping.do 请求由 flowController 来处理 -->
        <property name="mappings">
            <props>
                <prop key="/shopping.do">flowController</prop>
            </props>
            <!--<value> /shopping.do=flowController </value>-->
        </property>
        <property name="defaultHandler">
            <!-- UrlFilenameViewController 会将 "/index" 这样的请求映射成名为 "index" 的视图 -->
            <bean class="org.springframework.web.servlet.mvc.UrlFilenameViewController">
        </bean></property>
    </bean>
    <bean id="flowController" class="org.springframework.webflow.mvc.servlet.FlowController">
        <property name="flowExecutor" ref="flowExecutor">
    </property></bean>

</beans>

shopping.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">
    <!-- view-state中的view对应jsp文件夹中的jsp页面，on是触发事件，to对应state id -->
    <!-- 根据排在第一位的顺序来执行 -->
    <view-state id="viewCart" view="viewCart">
        <transition on="submit" to="viewOrder">
        </transition>
    </view-state>
    <view-state id="viewOrder" view="viewOrder">
        <transition on="confirm" to="orderConfirmed">
        </transition>
    </view-state>
    <view-state id="orderConfirmed" view="orderConfirmed">
        <transition on="returnToIndex" to="returnToIndex">
        </transition>
    </view-state>
    <end-state id="returnToIndex" view="externalRedirect:/index.jsp">
    </end-state>
</flow>

orderConfirmed.jsp:

<?xml version="1.0" encoding="utf-8" ?>
<!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">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Cart Application</title>
</head>
<body>
<h1>Order Confirmed</h1>
<a href="${flowExecutionUrl}&_eventId=returnToIndex">Return to
    index</a>
</body>
</html>

viewCart.jsp:

<?xml version="1.0" encoding="utf-8" ?>
<!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">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Cart Application</title>
</head>
<body>

<h1>View Cart</h1>
<a href="${flowExecutionUrl}&_eventId=submit">Submit</a>

</body>
</html>

viewOrder.jsp:

<?xml version="1.0" encoding="utf-8" ?>
<!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">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Cart Application</title>
</head>
<body>
<h1>Order</h1>
<a href="${flowExecutionUrl}&_eventId=confirm">Confirm</a>
</body>
</html>

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">

  <display-name>winner-test Web Application</display-name>
  <servlet>
    <servlet-name>mvc-dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--指定了核心配置文件的位置 -->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:mvc-dispatcher.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>mvc-dispatcher</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

index.jsp:

<?xml version="1.0" encoding="utf-8" ?>
<!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">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Cart Application</title>
</head>
<body>
<h1>Hello!</h1>

<a href="shopping.do">View Cart</a>
</body>
</html>

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelversion>4.0.0</modelversion>
  <groupid>com.wrh</groupid>
  <artifactid>springwebflow</artifactid>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>springwebflow Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupid>junit</groupid>
      <artifactid>junit</artifactid>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupid>org.springframework.webflow</groupid>
      <artifactid>spring-webflow</artifactid>
      <version>2.4.5.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-webmvc</artifactid>
      <version>4.3.8.RELEASE</version>
    </dependency>
      <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
      <dependency>
          <groupid>org.springframework</groupid>
          <artifactid>spring-web</artifactid>
          <version>4.3.8.RELEASE</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
      <dependency>
          <groupid>javax.servlet</groupid>
          <artifactid>jstl</artifactid>
          <version>1.2</version>
      </dependency>
  </dependencies>
  <build>
    <finalname>springwebflow</finalname>
  </build>
</project>

Original: https://blog.csdn.net/m0_72431373/article/details/127772494
Author: m0_72431373
Title: 使用Spring Web Flow—Spring Web Flow的配置

原创文章受到原创版权保护。转载请注明出处：https://www.johngo689.com/654332/

转载文章受原作者版权保护。转载请注明原作者出处！

赞 (0)
0

【自取】最近整理的，有需要可以领取学习：



Linux核心资料大放送~

全栈面试题汇总（持续更新&可下载）

一个提高学习100%效率的工具！

【超详细】深度学习面试题目！

LeetCode Python刷题答案下载！

LeetCode Java版刷题答案下载！

LeetCode C++ 版本，抓紧保存！

LeetCode GO语言 刷题答案下载！

大家都在看

亲爱的 Coder【最近整理，可免费获取】👉 最新必读书单  | 👏 面试题下载  | 🌎 免费的AI知识星球