diff --git a/w4/.gitconfig b/w4/.gitconfig
new file mode 100644
index 0000000..e853fd6
--- /dev/null
+++ b/w4/.gitconfig
@@ -0,0 +1,2 @@
+[safe]
+	directory = *
diff --git a/w4/Spider - 副本.java b/w4/Spider - 副本.java
new file mode 100644
index 0000000..9a7f8f4
--- /dev/null
+++ b/w4/Spider - 副本.java	
@@ -0,0 +1,143 @@
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+import org.jsoup.select.Elements;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Spider {
+    protected String baseUrl;
+    protected String userAgent;
+    
+    public Spider(String baseUrl) {
+        this.baseUrl = baseUrl;
+        this.userAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36";
+    }
+    
+    public Document fetchPage(String url) {
+        try {
+            return Jsoup.connect(url)
+                    .userAgent(userAgent)
+                    .timeout(10000)
+                    .get();
+        } catch (IOException e) {
+            System.err.println("Error fetching " + url + ": " + e.getMessage());
+            return null;
+        }
+    }
+    
+    public List<Movie> parsePage(Document doc) {
+        throw new UnsupportedOperationException("Subclass must override parsePage method");
+    }
+    
+    public void saveData(List<Movie> data, String filename) {
+        if (data == null || data.isEmpty()) {
+            System.out.println("No data to save");
+            return;
+        }
+        
+        try (PrintWriter writer = new PrintWriter(new FileWriter(filename, false))) {
+            writer.println("title,rating,link");
+            for (Movie movie : data) {
+                writer.println(movie.getTitle() + "," + movie.getRating() + "," + movie.getLink());
+            }
+            System.out.println("Data saved to " + filename);
+        } catch (IOException e) {
+            System.err.println("Error saving data: " + e.getMessage());
+        }
+    }
+    
+    public List<Movie> run(int startPage, Integer endPage) {
+        List<Movie> allData = new ArrayList<>();
+        int currentPage = startPage;
+        
+        while (true) {
+            String url = endPage != null ? baseUrl + "?start=" + ((currentPage - 1) * 25) : baseUrl;
+            System.out.println("Processing page " + currentPage + ": " + url);
+            
+            Document doc = fetchPage(url);
+            if (doc == null) {
+                break;
+            }
+            
+            List<Movie> pageData = parsePage(doc);
+            if (pageData == null || pageData.isEmpty()) {
+                break;
+            }
+            
+            allData.addAll(pageData);
+            
+            if (endPage != null && currentPage >= endPage) {
+                break;
+            }
+            
+            currentPage++;
+            try {
+                Thread.sleep(1000); // 防止请求过快被封
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                break;
+            }
+        }
+        
+        return allData;
+    }
+}
+
+class Movie {
+    private String title;
+    private String rating;
+    private String link;
+    
+    public Movie(String title, String rating, String link) {
+        this.title = title;
+        this.rating = rating;
+        this.link = link;
+    }
+    
+    public String getTitle() {
+        return title;
+    }
+    
+    public String getRating() {
+        return rating;
+    }
+    
+    public String getLink() {
+        return link;
+    }
+}
+
+class DoubanMovieSpider extends Spider {
+    public DoubanMovieSpider() {
+        super("https://movie.douban.com/top250");
+    }
+    
+    @Override
+    public List<Movie> parsePage(Document doc) {
+        List<Movie> movies = new ArrayList<>();
+        Elements items = doc.select("div.item");
+        
+        for (Element item : items) {
+            String title = item.select("span.title").first().text();
+            String rating = item.select("span.rating_num").first().text();
+            String link = item.select("a").first().attr("href");
+            
+            movies.add(new Movie(title, rating, link));
+        }
+        
+        return movies;
+    }
+}
+
+class Main {
+    public static void main(String[] args) {
+        DoubanMovieSpider spider = new DoubanMovieSpider();
+        List<Movie> data = spider.run(1, 10); // 爬取前10页
+        spider.saveData(data, "douban_movies.csv");
+        System.out.println("爬取完成，共获取" + data.size() + "条数据");
+    }
+}
\ No newline at end of file
diff --git a/w4/Spider.java b/w4/Spider.java
new file mode 100644
index 0000000..9a7f8f4
--- /dev/null
+++ b/w4/Spider.java
@@ -0,0 +1,143 @@
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+import org.jsoup.select.Elements;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Spider {
+    protected String baseUrl;
+    protected String userAgent;
+    
+    public Spider(String baseUrl) {
+        this.baseUrl = baseUrl;
+        this.userAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36";
+    }
+    
+    public Document fetchPage(String url) {
+        try {
+            return Jsoup.connect(url)
+                    .userAgent(userAgent)
+                    .timeout(10000)
+                    .get();
+        } catch (IOException e) {
+            System.err.println("Error fetching " + url + ": " + e.getMessage());
+            return null;
+        }
+    }
+    
+    public List<Movie> parsePage(Document doc) {
+        throw new UnsupportedOperationException("Subclass must override parsePage method");
+    }
+    
+    public void saveData(List<Movie> data, String filename) {
+        if (data == null || data.isEmpty()) {
+            System.out.println("No data to save");
+            return;
+        }
+        
+        try (PrintWriter writer = new PrintWriter(new FileWriter(filename, false))) {
+            writer.println("title,rating,link");
+            for (Movie movie : data) {
+                writer.println(movie.getTitle() + "," + movie.getRating() + "," + movie.getLink());
+            }
+            System.out.println("Data saved to " + filename);
+        } catch (IOException e) {
+            System.err.println("Error saving data: " + e.getMessage());
+        }
+    }
+    
+    public List<Movie> run(int startPage, Integer endPage) {
+        List<Movie> allData = new ArrayList<>();
+        int currentPage = startPage;
+        
+        while (true) {
+            String url = endPage != null ? baseUrl + "?start=" + ((currentPage - 1) * 25) : baseUrl;
+            System.out.println("Processing page " + currentPage + ": " + url);
+            
+            Document doc = fetchPage(url);
+            if (doc == null) {
+                break;
+            }
+            
+            List<Movie> pageData = parsePage(doc);
+            if (pageData == null || pageData.isEmpty()) {
+                break;
+            }
+            
+            allData.addAll(pageData);
+            
+            if (endPage != null && currentPage >= endPage) {
+                break;
+            }
+            
+            currentPage++;
+            try {
+                Thread.sleep(1000); // 防止请求过快被封
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                break;
+            }
+        }
+        
+        return allData;
+    }
+}
+
+class Movie {
+    private String title;
+    private String rating;
+    private String link;
+    
+    public Movie(String title, String rating, String link) {
+        this.title = title;
+        this.rating = rating;
+        this.link = link;
+    }
+    
+    public String getTitle() {
+        return title;
+    }
+    
+    public String getRating() {
+        return rating;
+    }
+    
+    public String getLink() {
+        return link;
+    }
+}
+
+class DoubanMovieSpider extends Spider {
+    public DoubanMovieSpider() {
+        super("https://movie.douban.com/top250");
+    }
+    
+    @Override
+    public List<Movie> parsePage(Document doc) {
+        List<Movie> movies = new ArrayList<>();
+        Elements items = doc.select("div.item");
+        
+        for (Element item : items) {
+            String title = item.select("span.title").first().text();
+            String rating = item.select("span.rating_num").first().text();
+            String link = item.select("a").first().attr("href");
+            
+            movies.add(new Movie(title, rating, link));
+        }
+        
+        return movies;
+    }
+}
+
+class Main {
+    public static void main(String[] args) {
+        DoubanMovieSpider spider = new DoubanMovieSpider();
+        List<Movie> data = spider.run(1, 10); // 爬取前10页
+        spider.saveData(data, "douban_movies.csv");
+        System.out.println("爬取完成，共获取" + data.size() + "条数据");
+    }
+}
\ No newline at end of file
diff --git a/w4/图形面积计算器重构 完整整合版.docx b/w4/图形面积计算器重构 完整整合版.docx
new file mode 100644
index 0000000..d4b7d56
Binary files /dev/null and b/w4/图形面积计算器重构 完整整合版.docx differ