我仍然对groovy/grails不熟悉,但是当我尝试调用Grails 3.0.9的邮件插件时,我无法确定以下语法有什么问题:Groovy调用的输入参数不确定:模糊方法重载
class Email {
String subject;
List<String> toEmail;
List<String> ccEmail;
List<String> bccEmail;
String body;
}
Email email = new Email(toEmail: ["[email protected]"], body: "Hi", subject: "Yo")
mailService.sendMail {
to email.toEmail.toArray()
from "[email protected]"
cc email.ccEmail?.toArray()
bcc email.bccEmail?.toArray()
subject email.subject
body email.body
}
当我没有任何人进行碳复制时,下面的异常被引发到cc参数行。但是,我会认为elvis运营商会刚刚返回null,并且一切都会很好。我错过了什么?我觉得如果没有数据存在,我可能根本不应该设置cc和bcc字段,但我不确定为什么这会导致问题(也许它是插件的内部),以及我怎么可以在此编码边缘情况(单独建立的参数和将它们作为一个变量?)
groovy.lang.GroovyRuntimeException: Ambiguous method overloading for method org.springframework.util.Assert#notEmpty.
Cannot resolve which method to invoke for [null, class java.lang.String] due to overlapping prototypes between:
[interface java.util.Collection, class java.lang.String]
[interface java.util.Map, class java.lang.String]
at groovy.lang.MetaClassImpl.chooseMostSpecificParams(MetaClassImpl.java:3241) ~[groovy-2.4.5.jar:2.4.5]
at groovy.lang.MetaClassImpl.chooseMethodInternal(MetaClassImpl.java:3194) ~[groovy-2.4.5.jar:2.4.5]
at groovy.lang.MetaClassImpl.chooseMethod(MetaClassImpl.java:3137) ~[groovy-2.4.5.jar:2.4.5]
at groovy.lang.MetaClassImpl.pickStaticMethod(MetaClassImpl.java:1508) ~[groovy-2.4.5.jar:2.4.5]
at groovy.lang.MetaClassImpl.retrieveStaticMethod(MetaClassImpl.java:1404) ~[groovy-2.4.5.jar:2.4.5]
at groovy.lang.MetaClassImpl.createStaticSite(MetaClassImpl.java:3383) ~[groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.CallSiteArray.createCallStaticSite(CallSiteArray.java:77) [groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.CallSiteArray.createCallSite(CallSiteArray.java:162) [groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48) [groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113) [groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:133) [groovy-2.4.5.jar:2.4.5]
at grails.plugins.mail.MailMessageBuilder.cc(MailMessageBuilder.groovy:214) ~[mail-2.0.0.RC4.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_51]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_51]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_51]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_51]
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) ~[groovy-2.4.5.jar:2.4.5]
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) ~[groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:384) ~[groovy-2.4.5.jar:2.4.5]
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019) ~[groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:69) ~[groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:52) [groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:154) [groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:166) [groovy-2.4.5.jar:2.4.5]
at com.doctorsorders.email.EmailService$_sendEmail_closure1.doCall(EmailService.groovy:19) ~[main/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_51]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_51]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_51]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_51]
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) ~[groovy-2.4.5.jar:2.4.5]
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) ~[groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294) ~[groovy-2.4.5.jar:2.4.5]
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019) ~[groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:42) ~[groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48) [groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113) [groovy-2.4.5.jar:2.4.5]
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125) [groovy-2.4.5.jar:2.4.5]
什么是'bccEmail'类型? – Opal
而不是cc email.ccEmail?.toArray()&bcc email.bccEmail?.toArray(),请尝试:cc email.ccEmail?.toArray():[]&bcc email.bccEmail?.toArray()?: ] –
@Opal:这是一个字符串列表,我添加了电子邮件类。 – IcedDante