我可以在Groovy中传递一个方法来代替闭包吗？

假设我有这样的东西：

class Test {

    def test_method() {
        def http = new HTTPBuilder("http://rest.request.com")
        http.request(groovyx.net.http.Method.GET) { req ->
            uri.path = "/path/to/rest/request"
            response.success = {resp, reader ->
                println resp
            }
        }
    }

}

class Test {

    def print_resp(String resp) {
        println resp
    }

    def test_method() {
        def http = new HTTPBuilder("http://rest.request.com")
        http.request(groovyx.net.http.Method.GET) { req ->
            uri.path = "/path/to/rest/request"
            response.success = print_resp
        }
    }

}

这一切都很好，但我真的更喜欢这样做：

class Test {

    def test_method() {
        def http = new HTTPBuilder("http://rest.request.com")
        http.request(groovyx.net.http.Method.GET) { req ->
            uri.path = "/path/to/rest/request"
            response.success = {resp, reader ->
                println resp
            }
        }
    }

}

class Test {

    def print_resp(String resp) {
        println resp
    }

    def test_method() {
        def http = new HTTPBuilder("http://rest.request.com")
        http.request(groovyx.net.http.Method.GET) { req ->
            uri.path = "/path/to/rest/request"
            response.success = print_resp
        }
    }

}

---

不过我把语法搞错了。请帮助我理解我做错了什么。

是否要使用语法：

def test_method() {
    def http = new HTTPBuilder("http://rest.request.com")
    http.request(groovyx.net.http.Method.GET) { req ->
        uri.path = "/path/to/rest/request"
        response.success = this.&print_resp
    }
}

---

您要使用以下语法：

def test_method() {
    def http = new HTTPBuilder("http://rest.request.com")
    http.request(groovyx.net.http.Method.GET) { req ->
        uri.path = "/path/to/rest/request"
        response.success = this.&print_resp
    }
}

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