Groovy 带闭包的反射

Question

这是怎么回事？

import java.lang.reflect.Method

class MyClass{

   String method1(Closure c){
    println 'method'
    c() + ' method 1'
  }
   String method2(){
    println 'method'
    'method 2'
  }
}


def m = new MyClass()
def c = {'closure'}

println m.method1(c)

Method mr2 = MyClass.getMethod('method2')
println mr2

println mr2.invoke(m)
println '---'

Method mr1 = MyClass.getMethod('method1', c)
println mr1

println mr1.invoke(m)
println '---'

产生这个（在 Jenkins groovy 控制台）

closure method 1
public java.lang.String MyClass.method2()
method 2
---
groovy.lang.MissingMethodException: No signature of method: static MyClass.getMethod() is applicable for argument types: (java.lang.String, Script1$_run_closure1) values: [method1, Script1$_run_closure1@1242bced]
Possible solutions: method2()
    at groovy.lang.MetaClassImpl.invokeStaticMissingMethod(MetaClassImpl.java:1367)
    at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1353)
    at org.codehaus.groovy.runtime.callsite.StaticMetaClassSite.call(StaticMetaClassSite.java:50)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:120)
    at Script1.run(Script1.groovy:27)
.
.
.

最终我希望能够在选择带有反射的方法后将 groovy 闭包传递给 java 方法，但我似乎无法将带有闭包的方法作为参数

Answer 1

您需要更改：

Method mr1 = MyClass.getMethod('method1', c)
println mr1

println mr1.invoke(m)

收件人：

Method mr1 = MyClass.getMethod('method1', Closure)
println mr1

println mr1.invoke(m, c)

Groovy 带闭包的反射

Groovy reflection with a closure

groovy

jenkins