作为War文件运行时找不到Json Views模板 [英] Json Views template not found when run as a war file

问题描述

我正在使用Grails的Json views插件.在开发中可以使用，但是当我将其作为jar文件运行时，它无法找到要渲染的模板/gson文件.我收到以下错误

I am using Json views plugin of grails. Which works in development, but when I run it as a jar file, it is not able to find the templates/gson files for rendering. I get the following error

//code 
    def template = jsonViewTemplateEngine.resolveTemplate(<path to template>)
            def writable = template.make(kase: kase)

//exception
    Cannot invoke method make() on null object. Stacktrace follows:
java.lang.NullPointerException: Cannot invoke method make() on null object

我们正在使用的Json Views是我们正在开发的内联插件的一部分.我们创建的jar也使用该内联插件运行(使用gradle包装器实现)

Json Views we are using are a part of a inline plugin we are developing. Jar we create also runs with that inline plugin (implemented using gradle wrapper)

有什么想法/建议吗?

环境: 谷物-3.2.0 Groovy-2.4.7 Json-Views插件-1.1.1

Environment: Grails - 3.2.0 Groovy - 2.4.7 Json-Views plugin - 1.1.1

推荐答案

视图已预编译为可通过Gradle和compileGsonViews任务进行部署的类.默认情况下，这是使用project.name设置完成的.

Views are pre-compiled into classes for deployment via Gradle and the compileGsonViews task. This is done using the project.name setting by default.

您会在build/main/gson-classes目录中注意到所生成的类.例如，如果您的应用程序名称为foo，则将具有类似foo_book_show_gson.class的类，其中foo_部分被视为程序包"名称.

You will notice in the build/main/gson-classes directory the classes that are produced. For example if your application name is foo you will have classes like foo_book_show_gson.class where the foo_ part is considered the "package" name.

在运行时.包名称，用于解析根据grails-app/conf/application.yml中的info.app.name设置计算的视图.

At runtime. The package name to use to resolve views calculated from the info.app.name setting in grails-app/conf/application.yml.

这意味着，如果在Gradle中您的project.name评估为foo，并且application.yml中的设置也是foo，那么一切都很好.这是最常见的情况，因为通常您的应用程序名称在两个地方都是相同的.

What this means is that if in Gradle your project.name evaluates to foo and the setting in application.yml is also foo then all is well. This is the most common case as typically your application name is the same in both places.

如果info.app.name和Gradle project.name不匹配，则会出现视图无法解析的问题.

If info.app.name and the Gradle project.name don't match up you can get the problem where views don't resolve.

您有两个选择可以解决此问题.一种是修改build.gradle以显式指定程序包名称:

You have two options to fix this. One is to modify build.gradle to explicitly specify the package name:

 compileGsonViews.packageName = 'foo'

然后确保info.app.name与该值匹配.

Then make sure info.app.name matches that value.

第二个选项是重命名项目目录，以便info.app.name和project.name对齐.

The second option is rename your project directory so that info.app.name and project.name align.

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