BAEL-318: Guide to Spring WebFlow

2017-03-31 10:51:39 +00:00
parent 2ab1c19561
commit 300b9ab78d
15 changed files with 461 additions and 0 deletions
@@ -0,0 +1,35 @@
+package org.baeldung.servlet;
+
+import javax.servlet.ServletRegistration.Dynamic;
+
+import org.baeldung.spring.WebFlowConfig;
+import org.baeldung.spring.WebMvcConfig;
+import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+
+public class WebInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
+
+    public WebInitializer() {
+        super();
+    }
+
+    // API
+    protected Class<?>[] getRootConfigClasses() {
+        return new Class<?>[] { WebMvcConfig.class, WebFlowConfig.class };
+    }
+
+    @Override
+    protected Class<?>[] getServletConfigClasses() {
+        return null;
+    }
+
+    @Override
+    protected String[] getServletMappings() {
+        return new String[] { "/" };
+    }
+
+    @Override
+    protected void customizeRegistration(final Dynamic registration) {
+        super.customizeRegistration(registration);
+    }
+
+}
@@ -0,0 +1,43 @@
+package org.baeldung.spring;
+
+import java.util.Collections;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.webflow.config.AbstractFlowConfiguration;
+import org.springframework.webflow.definition.registry.FlowDefinitionRegistry;
+import org.springframework.webflow.engine.builder.support.FlowBuilderServices;
+import org.springframework.webflow.executor.FlowExecutor;
+import org.springframework.webflow.mvc.builder.MvcViewFactoryCreator;
+
+@Configuration
+public class WebFlowConfig extends AbstractFlowConfiguration {
+
+    @Autowired
+    private WebMvcConfig webMvcConfig;
+
+    @Bean
+    public FlowDefinitionRegistry flowRegistry() {
+        return getFlowDefinitionRegistryBuilder(flowBuilderServices()).addFlowLocation("/WEB-INF/flows/activation-flow.xml", "activationFlow").build();
+    }
+
+    @Bean
+    public FlowExecutor flowExecutor() {
+        return getFlowExecutorBuilder(flowRegistry()).build();
+    }
+
+    @Bean
+    public FlowBuilderServices flowBuilderServices() {
+        return getFlowBuilderServicesBuilder().setViewFactoryCreator(mvcViewFactoryCreator()).setDevelopmentMode(true).build();
+    }
+
+    @Bean
+    public MvcViewFactoryCreator mvcViewFactoryCreator() {
+        MvcViewFactoryCreator factoryCreator = new MvcViewFactoryCreator();
+        factoryCreator.setViewResolvers(Collections.singletonList(this.webMvcConfig.viewResolver()));
+        factoryCreator.setUseSpringBeanBinding(true);
+        return factoryCreator;
+    }
+
+}
@@ -0,0 +1,54 @@
+package org.baeldung.spring;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.view.InternalResourceViewResolver;
+import org.springframework.web.servlet.view.JstlView;
+import org.springframework.webflow.mvc.servlet.FlowHandlerAdapter;
+import org.springframework.webflow.mvc.servlet.FlowHandlerMapping;
+
+@EnableWebMvc // <mvc:annotation-driven />
+@Configuration
+// @ImportResource("classpath:/flow-definition.xml")
+public class WebMvcConfig extends WebMvcConfigurerAdapter {
+
+    @Autowired
+    private WebFlowConfig webFlowConfig;
+
+    @Override
+    public void addResourceHandlers(ResourceHandlerRegistry registry) {
+        registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
+    }
+
+    @Bean
+    public InternalResourceViewResolver viewResolver() {
+        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
+        viewResolver.setViewClass(JstlView.class);
+        viewResolver.setPrefix("/WEB-INF/view/");
+        viewResolver.setSuffix(".jsp");
+        return viewResolver;
+    }
+
+    @Bean
+    public FlowHandlerMapping flowHandlerMapping() {
+        FlowHandlerMapping handlerMapping = new FlowHandlerMapping();
+        handlerMapping.setOrder(-1);
+        handlerMapping.setFlowRegistry(this.webFlowConfig.flowRegistry());
+        return handlerMapping;
+    }
+
+    @Bean
+    public FlowHandlerAdapter flowHandlerAdapter() {
+        FlowHandlerAdapter handlerAdapter = new FlowHandlerAdapter();
+        handlerAdapter.setFlowExecutor(this.webFlowConfig.flowExecutor());
+        handlerAdapter.setSaveOutputToFlashScopeOnRedirect(true);
+        return handlerAdapter;
+    }
+
+}