java/project/exceptinhandle/ConfigurationExceptionHandler.java

package com.crawler.exception.handler;

import com.crawler.exception.ConfigurationException;
import com.crawler.exception.InvalidUrlException;
import com.crawler.exception.UnsupportedCrawlerException;
import com.crawler.exception.ExceptionHandler;
import com.crawler.view.CrawlerView;

public class ConfigurationExceptionHandler implements ExceptionHandler {
    @Override
    public void handle(Exception e, CrawlerView view) {
        if (e instanceof InvalidUrlException) {
            InvalidUrlException ex = (InvalidUrlException) e;
            view.showErrorMessage("无效的URL格式: " + ex.getInvalidUrl());
        } else if (e instanceof UnsupportedCrawlerException) {
            UnsupportedCrawlerException ex = (UnsupportedCrawlerException) e;
            view.showErrorMessage("未找到支持该URL的爬虫: " + ex.getUrl());
        } else {
            view.showErrorMessage("配置异常: " + e.getMessage());
        }
    }

    @Override
    public Class<? extends Exception> getSupportedExceptionType() {
        return ConfigurationException.class;
    }
}