double_project/src/controller/BaseController.java

package controller;

import javax.swing.JOptionPane;

public abstract class BaseController {

    protected void validateNotNull(Object obj, String fieldName) {
        if (obj == null) {
            throw new IllegalArgumentException(fieldName + "不能为空");
        }
    }

    protected void validateStringNotEmpty(String str, String fieldName) {
        if (str == null || str.trim().isEmpty()) {
            throw new IllegalArgumentException(fieldName + "不能为空");
        }
    }

    protected void validateStringLength(String str, String fieldName, int min, int max) {
        validateStringNotEmpty(str, fieldName);
        if (str.length() < min || str.length() > max) {
            throw new IllegalArgumentException(fieldName + "长度应在" + min + "-" + max + "之间");
        }
    }

    protected void showError(String message) {
        JOptionPane.showMessageDialog(null, message, "错误", JOptionPane.ERROR_MESSAGE);
    }

    protected void showSuccess(String message) {
        JOptionPane.showMessageDialog(null, message, "成功", JOptionPane.INFORMATION_MESSAGE);
    }

    protected void logInfo(String message) {
        //System.out.println("ℹ️ " + message);
    }

    protected void logError(String message) {
        System.err.println("❌ " + message);
    }
}