使用lambda表达式获取方法名称

Mybatis-plus lambda 中的效果

例子：

public class LambdaUtils {

    @SneakyThrows
    public static <T> String getFieldName(FieldFunction<T, ?> func) {
        Method method = func.getClass().getDeclaredMethod("writeReplace");
        ReflectionUtils.makeAccessible(method);
        SerializedLambda serializedLambda = (SerializedLambda) method.invoke(func);
        return serializedLambda.getImplMethodName();
    }

    interface FieldFunction<T, R> extends Function<T, R>, Serializable {

    }

    @Data
    static class User {
        private String name;
        private Integer age;
    }

    public static void main(String[] args) {
        System.out.println(getFieldName(User::getName));
    }
}