上传文件至 'project/exceptinhandle'

project/exceptinhandle/ParseExceptionHandler.java

@@ -0,0 +1,27 @@
+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;
+    }
+}