diff --git a/w9/Article.java b/w9/Article.java
index f48d3e1..afdcb11 100644
--- a/w9/Article.java
+++ b/w9/Article.java
@@ -1,34 +1,56 @@
-package Article;
+package com.example.datacollect.model;
 
 import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
 
 public class Article {
     private String title;
+    private String url;
     private String content;
-    private String author;
-    private LocalDate publishDate;
+    private String author;          // 新增：作者
+    private LocalDate publishDate;  // 新增：发布日期
 
-    public Article(String title, String content, String author, LocalDate publishDate) {
+    public Article(String title, String url, String content) {
+        this(title, url, content, null, null);
+    }
+
+    public Article(String title, String url, String content, String author, LocalDate publishDate) {
         this.title = title;
+        this.url = url;
         this.content = content;
         this.author = author;
         this.publishDate = publishDate;
     }
 
-    // getters and setters
+    // Getters and Setters
     public String getTitle() { return title; }
-    public String getContent() { return content; }
-    public String getAuthor() { return author; }
-    public LocalDate getPublishDate() { return publishDate; }
-
     public void setTitle(String title) { this.title = title; }
+
+    public String getUrl() { return url; }
+    public void setUrl(String url) { this.url = url; }
+
+    public String getContent() { return content; }
     public void setContent(String content) { this.content = content; }
+
+    public String getAuthor() { return author; }
     public void setAuthor(String author) { this.author = author; }
+
+    public LocalDate getPublishDate() { return publishDate; }
     public void setPublishDate(LocalDate publishDate) { this.publishDate = publishDate; }
 
+    // 可选：格式化日期字符串的便捷方法
+    public String getFormattedPublishDate() {
+        if (publishDate == null) return "未知";
+        return publishDate.format(DateTimeFormatter.ofPattern("yyyy-MM-dd"));
+    }
+
     @Override
     public String toString() {
-        return String.format("Article{title='%s', author='%s', publishDate=%s}",
-                title, author, publishDate);
+        return "Article{"
+                + "title='" + title + '\''
+                + ", url='" + url + '\''
+                + ", author='" + author + '\''
+                + ", publishDate=" + publishDate
+                + '}';
     }
 }
\ No newline at end of file