java/project/exceptinhandle/NetworkExceptionHandler.java

package com.crawler.exception.handler;

import com.crawler.exception.HttpRequestException;
import com.crawler.exception.NetworkException;
import com.crawler.exception.TimeoutException;
import com.crawler.exception.ExceptionHandler;
import com.crawler.view.CrawlerView;

public class NetworkExceptionHandler implements ExceptionHandler {
    @Override
    public void handle(Exception e, CrawlerView view) {
        if (e instanceof HttpRequestException) {
            HttpRequestException ex = (HttpRequestException) e;
            view.showErrorMessage("HTTP请求失败，状态码: " + ex.getStatusCode());
        } else if (e instanceof TimeoutException) {
            view.showErrorMessage("网络连接超时，请稍后重试");
        } else {
            view.showErrorMessage("网络异常: " + e.getMessage());
        }
    }

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