我一直在尝试将我的grails 2代码中的某些移植到grails 3中。该特定代码使用grails-webflow插件(仅在grails 2.x之前受支持；由于在grails核心中进行了一些大修，它现在被破坏了)。
因此，我决定直接在我的应用程序中使用spring webflow。我已经能够进行基本的水暖工作了。那是我已经设置
* Webflow的应用程序上下文
*创建流工厂和所有
*编写流程xml。
*创建其他必要的bean。
现在，当我点击映射到流的URL时，可以看到我的.gsp页面正在呈现。但是问题是，它没有解决布局。页面即将没有任何样式/布局。我想念什么？
这是我的gsp page。
<html>
<head>
<title><g:brandedTitle/> - Repository Database: Administrator</title>
<meta content="main" name="layout"/>
<script type="text/javascript" src="${assetPath(src: 'da.js')}"></script>
....
....
这就是我完成webflow管道的方式。
@Configuration
@ComponentScan
class InstallRepositoryWebflow extends AbstractFlowConfiguration {
@Autowired
GroovyPagesTemplateEngine groovyPagesTemplateEngine;
@Autowired
GroovyPageLocator groovyPageLocator;
@Autowired
GrailsLayoutViewResolver grailsLayoutViewResolver;
@Bean
public FlowDefinitionRegistry flowRegistry() {
return getFlowDefinitionRegistryBuilder(flowBuilderServices())
// type on browser localhost:<port>/<context-path>/hitMeToInvokeThisFlow to invoke this flow.
.addFlowLocation("/WEB-INF/flows/install-repository.xml", "installrep/install")
.build();
}
@Bean
public FlowExecutor flowExecutor() {
return getFlowExecutorBuilder(flowRegistry()).build();
}
@Bean
public FlowBuilderServices flowBuilderServices() {
return getFlowBuilderServicesBuilder()
.setViewFactoryCreator(viewFactoryCreator())
.build();
}
@Bean
public ViewFactoryCreator viewFactoryCreator() {
List<ViewResolver> resolvers = new ArrayList<>(1);
resolvers.add(gspViewResolver());
resolvers.add(grailsLayoutViewResolver);
ViewFactoryCreator creator = new MvcViewFactoryCreator();
creator.setViewResolvers(resolvers);
return creator;
}
@Bean
ViewResolver gspViewResolver() {
GroovyPageViewResolver innerGspViewResolver = new GroovyPageViewResolver(groovyPagesTemplateEngine, groovyPageLocator);
//innerGspViewResolver.setAllowGrailsViewCaching(!gspReloadingEnabled || viewCacheTimeout != 0);
//innerGspViewResolver.setCacheTimeout(gspReloadingEnabled ? viewCacheTimeout : -1);
return innerGspViewResolver;
}
}
这是
resource.groovy的相关部分 flowHandlerAdapter(FlowHandlerAdapter) {
flowExecutor = ref("flowExecutor");
}
flowHandlerMapping(FlowHandlerMapping) {
flowRegistry = ref("flowRegistry");
}
问题是为什么未渲染我的布局？我想念什么？
最佳答案
最后，我找到了这个问题的答案。如果我使用SitemeshLayoutViewResolver layoutViewResolver，而不是创建自定义解析器GroovyPageViewResolver innerGspViewResolver = new GroovyPageViewResolver(groovyPagesTemplateEngine, groovyPageLocator);，那么我的问题就解决了。因此，基本上必须是这样。
@Bean
ViewResolver gspViewResolver() {
return jspViewResolver;
}
@Autowired
GrailsViewResolver jspViewResolver
这是示例项目here，以防有人在寻找工作示例。
更新资料
完成所有这些操作后，我遇到了一个非常奇怪的问题。当我从intellij运行应用程序时，应用程序的webflow部分可以正常工作。但是，当我使用
war任务创建gradlew assemble时，我总是在应用程序上出现/ error页面。在日志中，它说No mapping found for HTTP request with URI * in DispatcherServlet with name 'grailsDispatcherServlet'。显然，我要创建的bean不存在。为了解决此问题，我不再使用基于注释的配置，而是将resources.xml文件放在
grails-app/conf/spring/目录中。那解决了 war 问题。这是我的配置文件。<?xml version="1.0" encoding="UTF-8"?>
<!--suppress SpringFacetInspection -->
<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.xsd
http://www.springframework.org/schema/webflow-config
http://www.springframework.org/schema/webflow-config/spring-webflow-config-2.4.xsd">
<webflow:flow-registry id="flowRegistry" flow-builder-services="flowBuilderServices">
<webflow:flow-location path="/WEB-INF/flows/install-repository.xml" id="installrep/install"/>
</webflow:flow-registry>
<webflow:flow-executor id="flowExecutor" />
<webflow:flow-builder-services id="flowBuilderServices" view-factory-creator="mvcViewFactoryCreator"/>
<bean id="mvcViewFactoryCreator" class="org.springframework.webflow.mvc.builder.MvcViewFactoryCreator">
<property name="viewResolvers" ref="resolvers"/>
</bean>
<bean id="resolvers" class="java.util.ArrayList">
<constructor-arg>
<list>
<ref bean="jspViewResolver" />
</list>
</constructor-arg>
</bean>
<bean class="org.springframework.webflow.mvc.servlet.FlowHandlerAdapter">
<property name="flowExecutor" ref="flowExecutor" />
</bean>
<bean class="org.springframework.webflow.mvc.servlet.FlowHandlerMapping">
<property name="flowRegistry" ref="flowRegistry"/>
<property name="order" value="0"/>
</bean>
</beans>
关于grails - 在Grails 3应用程序中使用Spring Webflow，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42699446/