假设我写了以下方法:

public void submitForm1() {
        open();
        setField(1, "blah");
        setField(3, "bla");
        setField(4, "blah blah");
        submit();
    }

public void submitForm2() {
        open();
        setField(1, "blah");
        checkBox(1 , true);
        submit();
}

....

public void submitForm100() {
        open();
        setField(1, "bla");
        setField(2, "bla bla");
        setField(3, "blah");
        setArea(1, "blah blah");
        submit();
}


这些方法使我感到自己在不断重复自己。我觉得应该这样写:

public void submitForm1() {
        MyMethods.submitForm(
            {SET_FIELD, 1, "blah"},
            {SET_FIELD, 3, "bla"},
            {SET_FIELD, 4, "blah blah"}
        );
    }

public void submitForm2() {
        MyMethods.submitForm(
            {SET_FIELD, 1, "blah"},
            {CHECKBOX, 1, true}
        );
}

....

public void submitForm100() {
        MyMethods.submitForm(
            {SET_FIELD, 1, "bla"},
            {SET_FIELD, 2, "bla bla"},
            {SET_FIELD, 3, "blah"},
            {SET_AREA, 1, "blah blah"},
        );
}


这样,我不必一遍又一遍地重复所有这些打开和提交方法。

有没有办法做到这一点?

最佳答案

您可以使用类似:

public interface FormSubmission {
  void set();
  default submitForm() {
    open();
    set();
    submit();
  }
}


然后,您的代码将如下所示:

Map<Integer, FormSubmission > forms = new HashMap<> ();

//in constructor or static initialisation block:
forms.put(1, () -> { setField(1, "blah");
                     setField(3, "bla");
                     setField(4, "blah blah"); });
//etc.

public void submitForm(Integer i) {
  forms.get(i).submitForm(); //probably want to handle NPE here
}


它类似于命令模式。

07-24 09:49
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