在Groovy中尝试求值时缺少MethodException
我试图在类方法调用期间动态评估另一个函数的结果。但是,对评估范围存在争议在Groovy中尝试求值时缺少MethodException,groovy,scope,Groovy,Scope,我试图在类方法调用期间动态评估另一个函数的结果。但是,对评估范围存在争议 class A { private String a public A() { a = 5 } public whatIsA() { return a } public func() { return "\\${whatIsA()}" } public test() { return Ev
class A {
private String a
public A() {
a = 5
}
public whatIsA() {
return a
}
public func() {
return "\\${whatIsA()}"
}
public test() {
return Eval.me("\"\${func()}\"")
}
}
def a = new A()
a.test()
Exception thrown: groovy.lang.MissingMethodException: No signature of method: Script1.func() is applicable for argument types: () values: {}
groovy.lang.MissingMethodException: No signature of method: Script1.func() is applicable for argument types: () values: {}
at Script1.run(Script1.groovy:1)
at A.test(Script7:17)
at Script7.run(Script7:22)
如何将类实例的作用域传递到Eval脚本中?我认为以当前形式不可能。。。我能想到的最好方法是使用
Eval.x
如下:
public test() {
return Eval.x( this, '"${x.func()}"' )
}
或者将表达式包装在闭包中(然后可以在闭包中更改委托)
如果您不希望将其作为脚本运行,而是作为已编译的应用程序运行,那么您可能可以使用和/或执行一些路由。(请参阅:)试试这个
class A {
private String a
public A() {
a = 5
}
public whatIsA() {
return a
}
public func() {
return "${whatIsA()} + 5"
}
public test() {
return Eval.me(func())
}
}
def a = new A()
a.test()
class A {
private String a
public A() {
a = 5
}
public whatIsA() {
return a
}
public func() {
return "${whatIsA()} + 5"
}
public test() {
return Eval.me(func())
}
}
def a = new A()
a.test()