如何将Grails 2.1迁移到Grails 2.3应用程序? [英] How to migrate Grails 2.1 to Grails 2.3 application?

问题描述

我正在将我的应用程序从Grails 2.1迁移到2.3.迁移后我遇到很多错误-我想要一些带有Grails 2.3和Spring集成的示例应用程序.

I am migrating my application from Grails 2.1 to 2.3. I am getting lot of errors after migration - I want some sample applications with Grails 2.3 and Spring integration.

我做了一些HelloWorld示例应用程序，并且运行良好.但是，即使我在应用程序中应用了相同的内容，甚至在某些出现错误的地方也是如此.因为我的应用程序很大(100mb)，并且我正在与Spring，Hibernate和许多Grails插件进行大量集成.

I did some HelloWorld sample applications, and those are working fine. But even I apply same thing in my application, even some where it is giving error. Because my application is very big(100mb) and i am using lot of integration with Spring, Hibernate, and lot of Grails plugins.

我没有找到类似从Grails 2.1迁移到Grails 2.3"的任何代码级文档.我无法从Grails或在线上找到任何示例应用程序.

I did not find any code level document for "Migrate from Grails 2.1 to Grails 2.3" like that. I am not able to find any sample applications from Grails or online.

Grails官方文档，所有有关提供Grails META信息的信息.

Grails official documentation, all about providing Grails META information.

在我的main.gsp 229行中:

In my main.gsp 229 line:

<g:include controller="filter" action="tree"/>

Caused by: org.codehaus.groovy.grails.web.pages.exceptions.GroovyPagesException: Error processing GroovyPageView: Error executing tag <g:include>: Unable to execute include: Request processing failed; nested exception is org.codehaus.groovy.grails.exceptions.GrailsRuntimeException: java.lang.IllegalStateException: Cannot reset buffer after response has been committed
    at org.codehaus.groovy.grails.web.servlet.view.GroovyPageView.createGroovyPageException(GroovyPageView.java:205)
    at org.codehaus.groovy.grails.web.servlet.view.GroovyPageView.handleException(GroovyPageView.java:182)
    at org.codehaus.groovy.grails.web.servlet.view.GroovyPageView.renderWithTemplateEngine(GroovyPageView.java:153)
    at org.codehaus.groovy.grails.web.servlet.view.GroovyPageView.renderMergedOutputModel(GroovyPageView.java:84)
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:264)
    at org.codehaus.groovy.grails.web.sitemesh.SpringMVCViewDecorator.render(SpringMVCViewDecorator.java:67)
    ... 51 more
Caused by: org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException: Error executing tag <g:include>: Unable to execute include: Request processing failed; nested exception is org.codehaus.groovy.grails.exceptions.GrailsRuntimeException: java.lang.IllegalStateException: Cannot reset buffer after response has been committed
    at org.codehaus.groovy.grails.web.pages.GroovyPage.throwRootCause(GroovyPage.java:531)
    at org.codehaus.groovy.grails.web.pages.GroovyPage.invokeTag(GroovyPage.java:475)
    at sun.reflect.GeneratedMethodAccessor379.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1243)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1085)
    at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:909)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:989)
    at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:909)
    at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)
    at mycompany_dev_testuserdev_ws3_myapp_grails_app_views_layouts_main_gsp$_run_closure2.doCall(main.gsp:229)

推荐答案

将Config.groovy和BuildConfig.groovy文件与空的新Grails 2.3应用程序的默认值进行比较.

Compare your Config.groovy and BuildConfig.groovy files to the defaults of an empty new Grails 2.3 application.

最显着的变化是，插件依赖关系不再应在application.properties中描述.您还应该确保使用正确版本的Grails Tomcat，Hibernate和Scaffolding插件.雄猫Hibernate插件版本不再与Grails发行版本相同.在Grails 2.3中，脚手架功能已被提取为单独的插件. 另外，请确保对插件使用正确的作用域(对于tomcat是构建，对于休眠是运行时).

The most notable change is that plugin dependencies should not be described in application.properties any more. You should also make sure that you are using the correct version of Grails Tomcat, Hibernate and Scaffolding plugins. Tomcat & Hibernate plugin versions no more are the same as the Grails release version. Scaffolding features have been extracted to separate plugin in Grails 2.3 . Make also sure you use correct scope for plugins (build for tomcat, runtime for hibernate).

还建议开始使用基于新的基于Maven的依赖关系解析(使用Maven的一部分的以太库).这是通过BuildConfig.groovy中的设置grails.project.dependency.resolver = "maven"完成的.我遇到了Grails 2.3中基于旧常春藤的解析器的奇怪的类加载问题.

It's also recommended to start using the new maven based (uses aether library which is part of maven) dependency resolution. This is done with the setting grails.project.dependency.resolver = "maven" in BuildConfig.groovy . I ran in to strange classloading problems with the old ivy based resolver in Grails 2.3 .

我希望这会有所帮助.

这篇关于如何将Grails 2.1迁移到Grails 2.3应用程序?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！