在我的Grails插件中,我定义了以下Spring Bean

def doWithSpring = {

    // define a bean of type ConfigObjectHelper
    configHelper(ConfigObjectHelper)

    // Call a method of the bean we've just defined
    String appName = configHelper.getAsString('ftp.general.appName')

    // define another bean and pass appName to it's constructor
    pkApplication(Application, appName)
}

当我调用configHelper.getAsString时,我得到了NullPointerException,因为configHelper不引用我在上一行中创建的bean.相反,Grails会使用该名称查找当前类的属性/字段.由于不存在,我得到了NullPointerException.

有没有办法在doWithSpring闭包中获取对Spring bean的引用？

谢谢

解决方法:

MethodInvokingFactoryBean可以解救！

def doWithSpring = {

    // define a bean of type ConfigObjectHelper
    configHelper(ConfigObjectHelper)    

    appName(org.springframework.beans.factory.config.MethodInvokingFactoryBean) {
        targetObject = ref('configHelper')
        targetMethod = 'getAsString'
        arguments = ['ftp.general.appName']
    }               

    // define another bean and pass appName to it's constructor
    pkApplication(Application, appName)
}