Spring Web Flow 简单实现-自定义配置文件位置

最新推荐文章于 2022-11-16 07:40:33 发布

bestcxx

最新推荐文章于 2022-11-16 07:40:33 发布

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文章标签： Spring Web Flow 配置文件分离

文章发表1周内为内容优化高峰期，后续会根据认知迭代继续做完善补充。

本文链接：https://blog.youkuaiyun.com/bestcxx/article/details/78314919

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前言

在文章 Spring Web Flow 简单实现中，我们把Web Flow 的的配置文件和 jsp 页面文件统一放置在了 WEB-INF 目录下，事实上，那种情况下我们不得不这样做。

这片文章将介绍如何将Web Flow 的配置文件和 jsp 页面分离，这样更加符合我们的开发规范了，从某种程度上来说，本文应该比上一篇要更接近开发实际。

开始

项目文件结构比较简单，先整体贴出

从项目基本构建流程上来说，应该

eclipse 搭建WEB应用的MAVEN基本结构

然后是 8、6、4、2、1、3、5

依次介绍各个文件

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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.bestcxx.stu</groupId>
  <artifactId>springwebflow</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <name>spring web flow study</name>
  <description>spring web flow study</description>
  <properties>  
       <!-- 设置utf-8编码，必须设置 -->  
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
       <!-- spring 4.0.0 -->  
       <!-- 设置spring版本 -->  
       <springframework.version>4.3.0.RELEASE</springframework.version>  
       
       <!-- 设置Spring web flow 版本 -->
       <springwebflow.version>2.4.5.RELEASE</springwebflow.version>  
   </properties>
   
   <build>  
        <!-- jar包名称 -->  
        <finalName>mvc</finalName>  
  
        <plugins>  
            <!-- 编译jdk版本设置 1.6 -->  
            <plugin>  
                <groupId>org.apache.maven.plugins</groupId>  
                <artifactId>maven-compiler-plugin</artifactId>  
                <version>2.3.2</version>  
                <configuration>  
                    <source>1.7</source>  
                    <target>1.7</target>  
                    <uriEncoding>${project.build.sourceEncoding}</uriEncoding>  
                </configuration>  
            </plugin>  
  
            <!-- jetty插件 -->  
            <plugin>  
                <groupId>org.mortbay.jetty</groupId>  
                <artifactId>maven-jetty-plugin</artifactId>  
                <version>6.1.26</version>  
                <configuration>  
                    <!-- 通过jetty访问项目时的项目名称 ${project.build.outputDirectory} 为war包名 -->  
                    <webApp>  
                        <contextPath>${project.build.outputDirectory}</contextPath>  
                    </webApp>  
                    <!-- jetty附属配置，未启用 -->  
                    <!-- <webDefaultXml>src/main/resources/webdefault.xml</webDefaultXml> -->  
                    <!-- configuration.scanIntervalSeconds 配置表示新代码的扫描时间间隔（秒），值 <= 0 表示不扫描 -->  
                    <scanIntervalSeconds>0</scanIntervalSeconds>  
                    <!-- 端口设置 -->  
                    <connectors>  
                        <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">  
                            <port>8085</port>  
                        </connector>  
                    </connectors>  
                </configuration>  
            </plugin>  
  
        </plugins>  
    </build>
    
    <dependencies>
    	 <!-- junit仅测试环境使用 -->  
        <dependency>  
            <groupId>junit</groupId>  
            <artifactId>junit</artifactId>  
            <version>4.12</version>  
            <scope>test</scope>  
        </dependency>
        
        <!-- 设置spring依赖 -->  
        <!-- spring-mvc -->  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-webmvc</artifactId>  
            <version>${springframework.version}</version>  
        </dependency>  
          
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-core</artifactId>  
            <version>${springframework.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-context</artifactId>  
            <version>${springframework.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-beans</artifactId>  
            <version>${springframework.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-tx</artifactId>  
            <version>${springframework.version}</version>  
        </dependency>  
  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-orm</artifactId>  
            <version>${springframework.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-aop</artifactId>  
            <version>${springframework.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-test</artifactId>  
            <version>${springframework.version}</version>  
        </dependency>
        
        <!-- spring web flow 2.0 -->
         <!--Spring Web Flow所需要的依赖-->
	    <dependency>
	      <groupId>org.springframework.webflow</groupId>
	      <artifactId>spring-webflow</artifactId>
	       <version>${springwebflow.version}</version>
	    </dependency>
	    
	    <!-- servlet -->    
        <dependency>    
            <groupId>javax.servlet</groupId>    
            <artifactId>javax.servlet-api</artifactId>    
            <version>3.0.1</version>    
            <!-- tomcat的话只在编译时和测试时运行，本文jetty插件则注释掉 -->    
            <!-- <scope>provided</scope> -->    
        </dependency>    
            
        <!-- jstl标签 -->    
            <dependency>      
            <groupId>javax.servlet</groupId>      
            <artifactId>jstl</artifactId>      
            <version>1.2</version>      
            <scope>runtime</scope>      
        </dependency>
        
        <!-- apache 基础组件 -->
	    <dependency>
			<groupId>commons-lang</groupId>
			<artifactId>commons-lang</artifactId>
			<version>2.6</version>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
			<version>3.4</version>
		</dependency>
  

    </dependencies>
    
    
    
</project>

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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
	<display-name>spring web flow</display-name>  
    <!-- Spring MVC  DispatcherServlet配置-->  
    <servlet>  
        <servlet-name>mvc</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
        <!-- 自定义配置文件路径 -->  
        <init-param>    
            <param-name>contextConfigLocation</param-name>    
            <param-value>classpath:spring/mvc-servlet.xml</param-value>    
        </init-param>
        <!-- 初始化即加载 -->
        <load-on-startup>1</load-on-startup>  
    </servlet>  
    <servlet-mapping>  
        <servlet-name>mvc</servlet-name>  
        <url-pattern>/</url-pattern>  
    </servlet-mapping> 
    
    <welcome-file-list>
	    <welcome-file>index.jsp</welcome-file>
	 </welcome-file-list>
</web-app>

mvc-servlet.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:context="http://www.springframework.org/schema/context"  
    xmlns:tx="http://www.springframework.org/schema/tx"  
    xmlns:aop="http://www.springframework.org/schema/aop"  
    xmlns:util="http://www.springframework.org/schema/util"  
    xmlns:orm="http://www.springframework.org/schema/orm"   
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
    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-4.3.xsd  
                        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd  
                        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd  
                        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd  
                        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd  
                        http://www.springframework.org/schema/orm http://www.springframework.org/schema/orm/spring-orm-4.3.xsd  
                        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
                        http://www.springframework.org/schema/webflow-config http://www.springframework.org/schema/webflow-config/spring-webflow-config-2.0.xsd  
    ">  
    
    <!-- 配置注解驱动(自动配置注解形式的处理器映射器和处理器适配器)和转化器(conversion-service) -->
	<mvc:annotation-driven/>

    <!-- 加载其他配置文件 -->
    <import resource="classpath:applicationContext/applicationContext-*.xml" />

</beans>

接下来两个文件要统筹看，尤其是内部注解

applicationContext-flow.xml

注意看注解

<?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">
    <webflow:flow-executor id="flowExecutor" />
	<!-- 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，这里可以自定义id的名字，将结合applicationContext-mvc.xml的
	配置形成Web Flow的入口访问配置 -->
	<webflow:flow-registry id="flowRegistry" flow-builder-services="flowBuilderServices">
		<webflow:flow-location path="classpath:flows/shopping.xml" id="shopping" />
	</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" />
	</bean>
</beans>

applicationContext-mvc.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">
     
     <bean id="viewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView">
		</property>
		<property name="prefix" value="/WEB-INF/views/">
		</property>
		<property name="suffix" value=".jsp">
		</property>
	</bean>
	<bean id="viewMappings"
		class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
		<!-- id为 shopping 的请求由 flowController 来处理,事实上，这个请求时Web Flow的入口访问地址 -->
		<property name="mappings">
			<value> /shopping=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" />
		</property>
	</bean>
	<bean id="flowController" class="org.springframework.webflow.mvc.servlet.FlowController">
		<property name="flowExecutor" ref="flowExecutor" />
	</bean>
</beans>

具体的流程控制文件，比如这里是购物流程
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 id="cart">
        <transition on="submit" to="order">
        </transition>
    </view-state>
    <view-state id="order" view="order">
        <transition on="confirm" to="finish">
        </transition>
    </view-state>
    <view-state id="finish" view="finish">
        <transition on="toindex" to="index">
        </transition>
    </view-state>
    <end-state id="index" view="externalRedirect:index.jsp">
    </end-state>
</flow>

/views/cart.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"  
    pageEncoding="UTF-8"%>  
<!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=UTF-8">  
<title>Insert title here</title>  
</head>  
<body>  
      <h2 align="center">Hello，WebFlow</h2><br/>
      <a href="shopping">去购物车</a>
</body>  
</html>

/views/finish.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"  
    pageEncoding="UTF-8"%>  
<!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=UTF-8">  
<title>Insert title here</title>  
</head>  
<body>  
   <h2 align="center">确认支付</h2><br/>
   <a href="${flowExecutionUrl}&_eventId=toindex">恭喜你，支付成功..</a>
          
</body>  
</html>

/views/index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"  
    pageEncoding="UTF-8"%>  
<!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=UTF-8">  
<title>Insert title here</title>  
</head>  
<body>  
      <h2 align="center">Hello，WebFlow</h2><br/>
     	开启流程:<a href="shopping">购物车</a><br/>
</body>  
</html>

/views/order.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"  
    pageEncoding="UTF-8"%>  
<!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=UTF-8">  
<title>Insert title here</title>  
</head>  
<body>  
  <h2 align="center">订单</h2><br/>
  <a href="${flowExecutionUrl}&_eventId=confirm">确认支付</a>
          
</body>  
</html>

webapp/index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"  
    pageEncoding="UTF-8"%>  
<!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=UTF-8">  
<title>Insert title here</title>  
</head>  
<body>  
      <h2 align="center">Hello，WebFlow</h2><br/>
      <a href="shopping">去购物车</a>
</body>  
</html>

项目启动入口地址

http://localhost:8085/springwebflow/index.jsp

代码

https://github.com/Bestcxy/Spring-Web-Flow-Study/tree/master/complexdemo/springwebflow