我已經構建了一些自定義marshallers,並試圖訪問消息服務。我有以下代碼。從src/groovy訪問服務
resources.groovy
customObjectMarshallers(CustomObjectMarshallers){
marshallers = [
new PersonMarshaller(),
new DepartmentMarshaller(),
new ErrorsMarshaller()
]
}
CustomObjectMarshallers
class CustomObjectMarshallers {
List marshallers = []
def register(){
marshallers.each {
it.register()
}
}
}
ErrorsMarshaller
class ErrorsMarshaller {
@Autowired
def MessageSource messageSource
void register(){
JSON.registerObjectMarshaller(FieldError){ FieldError fieldError ->
def pMap = [:]
fieldError.properties.each { prop, val ->
println 'prop ' + prop
if(prop == 'rejected_value' || prop == 'arguments' || prop == 'class' || prop == 'codes' || prop == 'code' || prop == 'bindingFailure') {
return
} else if(prop == 'defaultMessage') {
pMap[prop] = messageSource.getMessage(val, fieldError, Locale.US)
} else {
pMap[prop] = MarshallerUtils.cleanPropertyValue(val)
}
}
return pMap
}
}
}
我GE以下例外
無法在空對象上調用方法getMessage()。堆棧跟蹤如下: 顯示java.lang.NullPointerException: 在org.hri.leaverequest.marshaller:在org.hri.leaverequest.marshaller.ErrorsMarshaller $ _register_closure1_closure2.doCall(26 ErrorsMarshaller.groovy)無法調用的方法getMessage,(),null對象 上.ErrorsMarshaller $ _register_closure1.doCall(ErrorsMarshaller.groovy:21) at grails.converters.JSON.value(JSON.java:202) at grails.converters.JSON.convertAnother(JSON.java:162) at grails.converters .JSON.value(JSON.java:202) at grails.converters.JSON.render(JSON.java:134) at org.hri.leaverequest.CalendarController.processRequest(CalendarController.groovy:154) at grails.plugin .cache.web.filter.PageFragmentCachingFilter.doFilter(PageFragmentCachingFilter。的java:198) 在grails.plugin.cache.web.filter.AbstractFilter.doFilter(AbstractFilter.java:63) 在grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter.doFilter(GrailsAnonymousAuthenticationFilter.java:53) 在grails.plugin.springsecurity.web.authentication.RequestHolderAuthenticationFilter.doFilter(RequestHolderAuthenticationFilter.java:49) at grails.plugin.springsecurity.web.authentication.logout.MutableLogoutFilter.doFilter(MutableLogoutFilter.java:82) at java.util。 concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 在java.util.concurrent.ThreadPoolExecutor中的$ Worker.run(ThreadPoolExecutor.java:615) 在java.lang.Thread.run(Thread.java:744)
什麼版本的Grails?你配置了這些軟件包的掃描嗎? –
@JoshuaMoore版本2.4,我不知道這是什麼意思來配置掃描這些軟件包。 –