spring webflow在grails 3中的应用
我一直在尝试将我的grails 2代码移植到grails 3。这个特定的代码使用grails-webflow插件(这个插件只支持grails2.x；它现在坏了，因为对grails内核进行了一些大修)。
所以我决定直接在我的应用程序中使用spring。我已经能做基本的水管了。也就是说，我已经为webflow *创建了流工厂设置了*应用程序上下文，并且所有*都编写了流xml。*创建了其他必需的bean。
现在，当我点击映射到我的流的url时，我可以看到我的.gsp页面正在呈现。但问题是，这并不能解决布局问题。没有任何样式/布局，页面就来了。我错过了什么？
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>
....
....我就是这样为webflow做水管的。
@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的相关章节
flowHandlerAdapter(FlowHandlerAdapter) {
flowExecutor = ref("flowExecutor");
}
flowHandlerMapping(FlowHandlerMapping) {
flowRegistry = ref("flowRegistry");
}的问题是，为什么没有呈现我的布局？我错过了什么？
回答 2
Stack Overflow用户
发布于 2017-03-15 10:25:00
最后，我找到了这个问题的答案。如果我使用SitemeshLayoutViewResolver layoutViewResolver，而不是创建一个自定义解析器GroovyPageViewResolver innerGspViewResolver = new GroovyPageViewResolver(groovyPagesTemplateEngine, groovyPageLocator);，那么我的问题就解决了。所以基本上必须是这样的。
@Bean
ViewResolver gspViewResolver() {
return jspViewResolver;
}
@Autowired
GrailsViewResolver jspViewResolver这是示例项目这里，以防有人在寻找工作示例。
更新
一旦我做了这一切，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部分工作正常。但是当我使用war任务创建gradlew assemble时，我总是在应用程序中找到/error页面。在日志中，写着No mapping found for HTTP request with URI * in DispatcherServlet with name 'grailsDispatcherServlet'。
显然，我想要创造的豆子不在那里。为了解决这个问题，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。解决战争问题的办法。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>Stack Overflow用户
发布于 2022-03-02 16:59:30
要使用resources.groovy而不是applicationContext.xml，可以执行以下操作：
xmlns([webflow:"http://www.springframework.org/schema/webflow-config"])
webflow.flow-registry(
id:"flowRegistry",
flow-builder-services:"flowBuilderServices"
){
webflow.flow-location(
path:"/WEB-INF/flows/install-repository.xml",
id:"installrep/install"
)
}//eo flow-registry
webflow.flow-executor(id:"flowExecutor")
webflow.flow-builder-services(
id:"flowBuilderServices",
view-factory-creator:"mvcViewFactoryCreator")
mvcViewFactoryCreator(org.springframework.webflow.mvc.builder.MvcViewFactoryCreator){
viewResolvers = ref("resolvers")
}
resolvers(ArrayList, [ ref("jspViewResolver") ])
myFlowHandlerAdapter(org.springframework.webflow.mvc.servlet.FlowHandlerAdapter){
flowExecutor = ref("flowExecutor")
}
myFlowHandlerMapping(org.springframework.webflow.mvc.servlet.FlowHandlerMapping){
flowRegistry = ref("flowRegistry")
order = 0
}https://stackoverflow.com/questions/42699446
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