英文:
Overwrite anonymous struct function
问题
如何覆盖匿名结构体函数。
为了澄清我的意思，请看下面的代码片段：
package baseimport ("fmt""net/http")type Executer interface {Execute()}type Controller struct { }func (self *Controller) Execute() {fmt.Println("Hello Controller")}func (self *Controller) ServeHTTP(rw http.ResponseWriter, r *http.Request) {self.Execute()}
现在我将Controller结构体嵌入到Test结构体中，也称为匿名结构体。
package baseimport ("fmt""net/http""net/http/httptest""testing")type Test struct {Controller}func (self *Test) Execute() {fmt.Println("Hello Test")}func TestInheritance(t *testing.T) {ts := httptest.NewServer(&Test{})defer ts.Close()http.Get(ts.URL)}
输出结果是"Hello Controller"，但期望的是"Hello Test"。你可以看到上面的代码，我重新实现了Execute函数，但它不起作用。
英文:
How can I overwrite anonymous struct function.
To clarify what I mean look at the following code snippet:
package baseimport ("fmt""net/http")type Executer interface {Execute()}type Controller struct { }func (self *Controller) Execute() {fmt.Println("Hello Controller")}func (self *Controller) ServeHTTP(rw http.ResponseWriter, r *http.Request) {self.Execute()}
Now I am embedding the Controller struct into Test struct, also called anonymous
package baseimport ("fmt""net/http""net/http/httptest""testing")type Test struct {Controller}func (self *Test) Execute() {fmt.Println("Hello Test")}func TestInheritance(t *testing.T) {ts := httptest.NewServer(&Test{})defer ts.Close()http.Get(ts.URL)}
As output I've got "Hello Controller" but expected "Hello Test". You can see code above, I reimplement the execute function, but it does not work.
答案1
得分: 4
由于Test没有ServeHTTP方法，你的测试服务器使用了Controller的方法，该方法调用了Controller.Execute()。如果你希望它正常工作，请为Test类型定义ServeHTTP方法。
英文:
Since Test has no ServeHTTP method, your test server uses Controller's, which calls Controller.Execute(). If you want it to work properly, define ServeHTTP for the Test type.
答案2
得分: -1
你好！以下是翻译好的内容：
type Test struct {Controller}`Controller` 没有 `ServeHTTP` 方法，但 `*Controller` 有。所以type Test struct {*Controller}我认为这样会起作用。
英文:
type Test struct {Controller}
Controller has no ServeHTTP method but *Controller has. So
type Test struct {*Controller}
I think it will work.
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