Question

我是Groovy的新手，但我正在尝试编写一个简单的递归方法来将分层路径解析为对象图。这是我尝试过的：

class Hierarchy {
    def root = [:]

    static void processHierarchy(names, parent) {
        println names
        if (names.size() > 0) {
            def childName = names[0]
            def child = parent[childName]
            if (child == null){
                child = new Expando()
                parent[childName]=  child
            }
            processHierarchy(names[1..-1], child)
        }
    }

    Hierarchy () {
        def names = '/some/thing/to/test'.split('/')
        if (names != null && names.size() > 0){
            processHierarcy(names, this.root)
        }
        println this.root
    }
}

new Hierarchy()

但是我收到以下错误：

Caught: groovy.lang.MissingMethodException: No signature of method: Hierarchy.processHierarcy() is applicable for argument types: ([Ljava.lang.String;, java.util.LinkedHashMap) values: [[, some, thing, to, test], [:]]
Possible solutions: processHierarchy(java.lang.Object, java.lang.Object)
groovy.lang.MissingMethodException: No signature of method: Hierarchy.processHierarcy() is applicable for argument types: ([Ljava.lang.String;, java.util.LinkedHashMap) values: [[, some, thing, to, test], [:]]
Possible solutions: processHierarchy(java.lang.Object, java.lang.Object)
    at Hierarchy.<init>(xxx.groovy:48)
    at xxx.run(xxx.groovy:54)

我在这里缺少什么？

Answer 1

在h中遗漏了processHierarcy(names, this.root)：）

另外，修改if processHierarchy()阻止if(names.size() > 1)以避免IndexOutOfBoundsException例外。

方法存在时缺少方法异常

1 个答案: