Spring Web Flowによる今どきでないWebアプリケーション開発

WebFlowConfig.java

package com.sios.flow;

import java.util.Arrays;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.validation.Validator;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.webflow.config.AbstractFlowConfiguration;
import org.springframework.webflow.definition.registry.FlowDefinitionRegistry;
import org.springframework.webflow.engine.builder.ViewFactoryCreator;
import org.springframework.webflow.engine.builder.support.FlowBuilderServices;
import org.springframework.webflow.executor.FlowExecutor;
import org.springframework.webflow.mvc.builder.MvcViewFactoryCreator;
import org.springframework.webflow.mvc.portlet.FlowHandlerAdapter;
import org.springframework.webflow.mvc.servlet.FlowHandlerMapping;
import org.thymeleaf.spring4.SpringTemplateEngine;
import org.thymeleaf.spring4.view.AjaxThymeleafViewResolver;
import org.thymeleaf.spring4.view.FlowAjaxThymeleafView;

@Configuration
public class WebFlowConfig extends AbstractFlowConfiguration{

    @Autowired
    SpringTemplateEngine templateEngine;

    @Bean
    public CharacterEncodingFilter characterEncodingFilter() {

        CharacterEncodingFilter filter = new CharacterEncodingFilter();
        filter.setEncoding("UTF-8");
        filter.setForceEncoding(false);
        return filter;
    }

    /**
     * フロー定義を配置するルートフォルダを定義します。
     * 下記の設定では、templatesフォルダ配下にFlow定義ファイルを配置します。
     * そして、templatesフォルダ配下に1つフォルダを作成して、
     * そこにflow-*.xmlというファイル名とします。今回は、flow-bbs.xmlとしています。
     * 
     * @return
     */
    @Bean
    public FlowDefinitionRegistry flowRegistry() {
        return getFlowDefinitionRegistryBuilder()
                .setBasePath("classpath:templates")
                .addFlowLocationPattern("/**/flow-*.xml")
                .setFlowBuilderServices(flowBuilderServices()).build();
    }

    @Bean
    public FlowBuilderServices flowBuilderServices() {
        return getFlowBuilderServicesBuilder()
                .setViewFactoryCreator(viewFactoryCreator())
                .setValidator(validator())
                .setDevelopmentMode(true)
                .build();
    }

    @Bean
    public Validator validator(){
        return new LocalValidatorFactoryBean();
    }

    @Bean
    public ViewFactoryCreator viewFactoryCreator() {
        MvcViewFactoryCreator bean = new MvcViewFactoryCreator();
        bean.setViewResolvers(Arrays.asList(viewResolver()));               
        bean.setUseSpringBeanBinding(true);
        return bean;
    }

    @Bean
    public FlowExecutor flowExecutor() {
        return getFlowExecutorBuilder(flowRegistry())
                .build();
    }

    @Bean
    public org.springframework.webflow.mvc.servlet.FlowHandlerAdapter flowHandler() {
        org.springframework.webflow.mvc.servlet.FlowHandlerAdapter bean = new org.springframework.webflow.mvc.servlet.FlowHandlerAdapter();
        bean.setFlowExecutor(flowExecutor());
        bean.setSaveOutputToFlashScopeOnRedirect(true);
        return bean;
    }

    @Bean
    public FlowHandlerMapping flowHandlerMapping() {
        FlowHandlerMapping bean = new FlowHandlerMapping();
        bean.setFlowRegistry(flowRegistry());
        bean.setOrder(0);
        return bean;
    }

    @Bean
    public AjaxThymeleafViewResolver viewResolver() {
        AjaxThymeleafViewResolver viewResolver = new AjaxThymeleafViewResolver();
        viewResolver.setViewClass(FlowAjaxThymeleafView.class);
        viewResolver.setTemplateEngine(templateEngine);
        viewResolver.setCharacterEncoding("UTF-8");
        return viewResolver;
    }
}