领域类中的 GrailsApplication

Question

我想写以下内容：

import grails.core.GrailsApplication

class MyDomainClass{
    GrailsApplication grailsApplication
    String otherName
    
    String getName(){
        String prop =  grailsApplication.config.getProperty('my.property.from.application.yml')
        return prop + otherName
    }
    static mapping = {
        autowire true
    }
}

但是，如果我在域类中有 grailsApplication，则 grails 命令grails run-app 不会启动网络服务器并永远等待。它输出以下警告，但没有错误：

> IDLE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/Users/martin/.gradle/caches/modules-2/files-2.1/org.codehaus.groovy/groovy/2.5.14/f0a005fb21e7bd9b7ebf04cd2ecda0fc8f3be59d/groovy-2.5.14.jar) to method java.util.AbstractMap.clone()
WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.reflection.CachedClass
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/Users/martin/.gradle/caches/modules-2/files-2.1/org.codehaus.groovy/groovy/2.5.14/f0a005fb21e7bd9b7ebf04cd2ecda0fc8f3be59d/groovy-2.5.14.jar) to method java.lang.Object.finalize()
WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.reflection.CachedClass

这是一种不好的做法还是错误？我该如何解决这个问题？在我看来，最明显的选择是调用服务。

我正在使用以下 Grails 版本：

| Grails Version: 4.0.11
| JVM Version: 11.0.11

Answer 1

添加 WebAttribute Trait，然后您将获得 grailsApplication。

9.1.1 WebAttributes Trait Example

WebAttributes 是框架提供的特征之一。任何 Groovy 类可以实现这个 trait 来继承所有的属性 以及 trait 提供的行为。

src/main/groovy/demo/Helper.groovy:

package demo

import grails.web.api.WebAttributes

class Helper implements WebAttributes {

    List<String> getControllerNames() {
        // There is no need to pass grailsApplication as an argument
        // or otherwise inject the grailsApplication property.  The
        // WebAttributes trait provides access to grailsApplication.
        grailsApplication.getArtefacts('Controller')*.name
    }
}