Spring Web Flow 简单实现-自定义配置文件位置

分手后的思念是犯贱 2022-06-07 13:25 516阅读 0赞

前言

在文章 [ Spring Web Flow 简单实现][Spring Web Flow] 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

![20171023074250028][]

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][eclipse _WEB_MAVEN]

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>  
             
           <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
             
             
           <springframework.version>4.3.0.RELEASE</springframework.version>  
           
           
           <springwebflow.version>2.4.5.RELEASE</springwebflow.version>  
       </properties>
       
       <build>  
              
            <finalName>mvc</finalName>  
      
            <plugins>  
                  
                <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>  
      
                  
                <plugin>  
                    <groupId>org.mortbay.jetty</groupId>  
                    <artifactId>maven-jetty-plugin</artifactId>  
                    <version>6.1.26</version>  
                    <configuration>  
                          
                        <webApp>  
                            <contextPath>${project.build.outputDirectory}</contextPath>  
                        </webApp>  
                          
                          
                          
                        <scanIntervalSeconds>0</scanIntervalSeconds>  
                          
                        <connectors>  
                            <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">  
                                <port>8085</port>  
                            </connector>  
                        </connectors>  
                    </configuration>  
                </plugin>  
      
            </plugins>  
        </build>
        
        <dependencies>
        	   
            <dependency>  
                <groupId>junit</groupId>  
                <artifactId>junit</artifactId>  
                <version>4.12</version>  
                <scope>test</scope>  
            </dependency>
            
              
              
            <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>
            
            
             
    	    <dependency>
    	      <groupId>org.springframework.webflow</groupId>
    	      <artifactId>spring-webflow</artifactId>
    	       <version>${springwebflow.version}</version>
    	    </dependency>
    	    
    	        
            <dependency>    
                <groupId>javax.servlet</groupId>    
                <artifactId>javax.servlet-api</artifactId>    
                <version>3.0.1</version>    
                    
                    
            </dependency>    
                
                
                <dependency>      
                <groupId>javax.servlet</groupId>      
                <artifactId>jstl</artifactId>      
                <version>1.2</version>      
                <scope>runtime</scope>      
            </dependency>
            
            
    	    <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>  
          
        <servlet>  
            <servlet-name>mvc</servlet-name>  
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
              
            <init-param>    
                <param-name>contextConfigLocation</param-name>    
                <param-value>classpath:spring/mvc-servlet.xml</param-value>    
            </init-param>
            
            <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  
        ">  
        
        
    	<mvc:annotation-driven/>
    
        
        <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" />
    	
    	<webflow:flow-registry id="flowRegistry" flow-builder-services="flowBuilderServices">
    		<webflow:flow-location path="classpath:flows/shopping.xml" id="shopping" />
    	</webflow:flow-registry>
    	
    	<webflow:flow-builder-services id="flowBuilderServices" view-factory-creator="mvcViewFactoryCreator" />
    	
    	<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">
    		
    		<property name="mappings">
    			<value> /shopping=flowController </value>
    		</property>
    		<property name="defaultHandler">
    			
    			<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

项目启动入口地址

[http://localhost:8085/springwebflow/index.jsp][http_localhost_8085_springwebflow_index.jsp]

代码

[https://github.com/Bestcxy/Spring-Web-Flow-Study/tree/master/complexdemo/springwebflow][https_github.com_Bestcxy_Spring-Web-Flow-Study_tree_master_complexdemo_springwebflow]

[Spring Web Flow]: http://blog.csdn.net/bestcxx/article/details/78024725
[20171023074250028]: /images/20220607/2cea8802a7524e68a9d842407223c9ec.png
[eclipse _WEB_MAVEN]: http://blog.csdn.net/bestcxx/article/details/54589039
[http_localhost_8085_springwebflow_index.jsp]: http://localhost:8085/springwebflow/index.jsp
[https_github.com_Bestcxy_Spring-Web-Flow-Study_tree_master_complexdemo_springwebflow]: https://github.com/Bestcxy/Spring-Web-Flow-Study/tree/master/complexdemo/springwebflow