w11-张思渊-202401070104

w11/StrategyFactory.java

@@ -0,0 +1,42 @@
+package com.example.datacollect.strategy;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.util.ArrayList;
+import java.util.List;
+
+public class StrategyFactory {
+    private static final Logger logger = LoggerFactory.getLogger(StrategyFactory.class);
+    private final List<CrawlStrategy> strategies = new ArrayList<>();
+
+    public StrategyFactory() {
+        strategies.add(new HnuNewsStrategy());
+        strategies.add(new BlogStrategy());
+        strategies.add(new NewsStrategy());
+        logger.info("Initialized with {} strategies", strategies.size());
+    }
+
+    public CrawlStrategy getStrategy(String url) {
+        CrawlStrategy bestStrategy = null;
+        int highestPriority = -1;
+        
+        for (CrawlStrategy s : strategies) {
+            if (s.supports(url) && s.getPriority() > highestPriority) {
+                bestStrategy = s;
+                highestPriority = s.getPriority();
+            }
+        }
+        
+        if (bestStrategy != null) {
+            logger.debug("Found strategy {} for URL: {}", bestStrategy.getClass().getSimpleName(), url);
+            return bestStrategy;
+        }
+        logger.debug("No specific strategy found for URL: {}, using default", url);
+        return new DefaultStrategy();
+    }
+
+    public void register(CrawlStrategy strategy) {
+        strategies.add(strategy);
+        logger.info("Registered strategy: {}", strategy.getClass().getSimpleName());
+    }
+}