intellij idea中快速抽取方法

時間 2019-11-17

原文原文鏈接

問題：有時候一個方法裏面嵌套了不少邏輯，想拆分爲多個方法方便調用；或者一個方法複用性很高，這時，這個方法嵌套在局部方法裏面確定是不方便的，如何快速抽取出這個方法？java

[java] view plain copy

print ?

public class Demo {
private static void getInfo(Object obj) {
Class<?> clazz = obj.getClass();
Method[] methods = clazz.getMethods();
for (Method method : methods) {
String name = method.getName();
Class<?> returnType = method.getReturnType();
Class<?>[] parameterTypes = method.getParameterTypes();
}
//-----------------------------我即將抽取的-------------------------//
Field[] declaredFields = clazz.getDeclaredFields();
for (Field field : declaredFields) {
String name = field.getName();
Class c1 = field.getType();
String type = c1.getName();
}
//------------------------------我即將抽取的------------------------//
}
}

public class Demo {
    private static void getInfo(Object obj) {
        Class<?> clazz = obj.getClass();
        Method[] methods = clazz.getMethods();
        for (Method method : methods) {
            String name = method.getName();
            Class<?> returnType = method.getReturnType();
            Class<?>[] parameterTypes = method.getParameterTypes();
        }

        //-----------------------------我即將抽取的-------------------------//
        Field[] declaredFields = clazz.getDeclaredFields();
        for (Field field : declaredFields) {
            String name = field.getName();
            Class c1 = field.getType();
            String type = c1.getName();
        }
        //------------------------------我即將抽取的------------------------//
    }

}

選中我即將抽取的代碼，按快捷鍵Ctrl + Alt + M 便可，或者鼠標右擊》Refactor 》Extract 》Method 出現以下

app

抽取後自動生成代碼以下，後續此方法就能夠方便的被調用了oop

[java] view plain copy

print ?

public class Demo {
private static void getInfo(Object obj) {
Class<?> clazz = obj.getClass();
Method[] methods = clazz.getMethods();
for (Method method : methods) {
String name = method.getName();
Class<?> returnType = method.getReturnType();
Class<?>[] parameterTypes = method.getParameterTypes();
}
//-----------------------------我即將抽取的-------------------------//
commonDeal(clazz);
//------------------------------我即將抽取的------------------------//
}
private static void commonDeal(Class<?> clazz) {
Field[] declaredFields = clazz.getDeclaredFields();
for (Field field : declaredFields) {
String name = field.getName();
Class c1 = field.getType();
String type = c1.getName();
}
}
}

public class Demo {
    private static void getInfo(Object obj) {
        Class<?> clazz = obj.getClass();
        Method[] methods = clazz.getMethods();
        for (Method method : methods) {
            String name = method.getName();
            Class<?> returnType = method.getReturnType();
            Class<?>[] parameterTypes = method.getParameterTypes();
        }

        //-----------------------------我即將抽取的-------------------------//
        commonDeal(clazz);
        //------------------------------我即將抽取的------------------------//
    }

    private static void commonDeal(Class<?> clazz) {
        Field[] declaredFields = clazz.getDeclaredFields();
        for (Field field : declaredFields) {
            String name = field.getName();
            Class c1 = field.getType();
            String type = c1.getName();
        }
    }

}

對應的還有變量的抽取、常量的抽取等，看下圖，這是鼠標右擊》Refactor 》Extract 操做後出現的效果，裏面包含不少的抽取：this