上传文件至 'w10'

w10/ArticleRepository.java

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+package com.rental.crawler.repository;
+
+import com.rental.crawler.model.Book;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ArticleRepository {
+    private List<Book> articles;
+
+    public ArticleRepository() {
+        this.articles = new ArrayList<>();
+    }
+
+    public ArticleRepository(List<Book> articles) {
+        this.articles = articles != null ? new ArrayList<>(articles) : new ArrayList<>();
+    }
+
+    public void add(Book article) {
+        if (article != null) {
+            this.articles.add(article);
+        }
+    }
+
+    public void addAll(List<Book> newArticles) {
+        if (newArticles == null) {
+            return;
+        }
+        for (Book article : newArticles) {
+            if (article != null) {
+                this.articles.add(article);
+            }
+        }
+    }
+
+    public List<Book> findAll() {
+        return new ArrayList<>(this.articles);
+    }
+
+    public Book findByIndex(int index) {
+        if (index >= 0 && index < this.articles.size()) {
+            return this.articles.get(index);
+        }
+        return null;
+    }
+
+    public int size() {
+        return this.articles.size();
+    }
+
+    public void clear() {
+        this.articles.clear();
+    }
+
+    public boolean isEmpty() {
+        return this.articles.isEmpty();
+    }
+}

w10/Test.java

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+package com.rental.crawler;
+
+import com.rental.crawler.command.AnalyzeCommand;
+import com.rental.crawler.model.Book;
+import com.rental.crawler.repository.ArticleRepository;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+    public static void main(String[] args) {
+        System.out.println("========== 测试 ArticleRepository addAll ==========");
+        ArticleRepository repository = new ArticleRepository();
+
+        List<Book> books1 = new ArrayList<>();
+        books1.add(createBook("书1", "作者1", "出版社A", 8.5));
+        books1.add(createBook("书2", "作者2", "出版社B", 7.5));
+        books1.add(null);
+        repository.addAll(books1);
+        System.out.println("添加book1后的数量: " + repository.size());
+
+        List<Book> books2 = null;
+        repository.addAll(books2);
+        System.out.println("添加null后的数量: " + repository.size());
+
+        repository.add(null);
+        System.out.println("添加单个null后的数量: " + repository.size());
+
+        List<Book> books3 = new ArrayList<>();
+        books3.add(null);
+        books3.add(createBook("书3", "作者3", "出版社C", 9.0));
+        repository.addAll(books3);
+        System.out.println("添加包含null的列表后的数量: " + repository.size());
+
+        System.out.println("\n========== 测试 AnalyzeCommand ==========");
+        List<Book> testBooks = new ArrayList<>();
+        testBooks.add(createBook("红楼梦", "曹雪芹", "人民文学出版社", 9.0));
+        testBooks.add(createBook("水浒传", "施耐庵", "上海译文出版社", 8.5));
+        testBooks.add(createBook("书3", "作者3", "未知出版社", 6.5));
+        testBooks.add(null);
+
+        AnalyzeCommand analyzeCommand = new AnalyzeCommand();
+        analyzeCommand.execute(testBooks);
+
+        System.out.println("\n测试完成！");
+    }
+
+    private static Book createBook(String title, String author, String publisher, double rating) {
+        Book book = new Book();
+        book.setTitle(title);
+        book.setAuthors(author);
+        book.setPublisher(publisher);
+        book.setRating(rating);
+        return book;
+    }
+}