java/project/exceptinhandle/ParseExceptionHandler.java

package com.crawler.exception.handler;

import com.crawler.exception.DataExtractException;
import com.crawler.exception.HtmlParseException;
import com.crawler.exception.ParseException;
import com.crawler.exception.ExceptionHandler;
import com.crawler.view.CrawlerView;

public class ParseExceptionHandler implements ExceptionHandler {
    @Override
    public void handle(Exception e, CrawlerView view) {
        if (e instanceof HtmlParseException) {
            HtmlParseException ex = (HtmlParseException) e;
            view.showErrorMessage("HTML解析失败，URL: " + ex.getSourceUrl());
        } else if (e instanceof DataExtractException) {
            DataExtractException ex = (DataExtractException) e;
            view.showErrorMessage("数据提取失败，字段: " + ex.getExtractField());
        } else {
            view.showErrorMessage("解析异常: " + e.getMessage());
        }
    }

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