添加W4

Main.java

@@ -1,27 +1,169 @@
+import org.jfree.chart.ChartFactory;
+import org.jfree.chart.ChartUtils;
+import org.jfree.chart.JFreeChart;
+import org.jfree.data.category.DefaultCategoryDataset;
+import org.jfree.data.general.DefaultPieDataset;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.*;
+import java.util.stream.Collectors;
+
 public class Main {
     public static void main(String[] args) {
-        int[] voltages = {10, -5, 7, 105, 999, 89, 76, 74};
+        try {
-        int validCount = 0; // 有效数据个数
+            // 1. 爬取电影数据
-        double validSum = 0; // 有效数据总和
+            MovieCrawler crawler = new MovieCrawler();
+            List<Movie> movies = crawler.crawlTopMovies(50); // 爬取50部电影
+            
+            // 2. 数据清洗
+            List<Movie> cleanedMovies = cleanData(movies);
+            
+            // 3. 数据存储
+            saveToCSV(cleanedMovies, "movies.csv");
+            
+            // 4. 数据分析
+            analyzeData(cleanedMovies);
+            
+            // 5. 结果展示
+            displayResults(cleanedMovies);
+            generateCharts(cleanedMovies);
+            
+            System.out.println("爬取完成！共获取了 " + cleanedMovies.size() + " 部电影数据。");
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    private static List<Movie> cleanData(List<Movie> movies) {
+        return movies.stream()
+                .map(movie -> {
+                    // 去空格
+                    movie.setTitle(movie.getTitle().trim());
+                    movie.setGenre(movie.getGenre().trim());
+                    movie.setDirector(movie.getDirector().trim());
+                    movie.setActors(movie.getActors().trim());
+                    movie.setSynopsis(movie.getSynopsis().trim());
+                    return movie;
+                })
+                .collect(Collectors.toList());
+    }
+
+    private static void saveToCSV(List<Movie> movies, String fileName) throws IOException {
+        try (FileWriter writer = new FileWriter(fileName)) {
+            // 写入表头
+            writer.write("Title,Year,Rating,Genre,Director,Actors,Synopsis\n");
             
-        for (int voltage : voltages) {
+            // 写入数据
-            if (voltage == 999) {
+            for (Movie movie : movies) {
-                System.out.println("程序终止，传感器离线");
+                writer.write(String.format("%s,%d,%.1f,%s,%s,%s,%s\n",
-                break; // 遇到999，终止程序
+                        escapeCSV(movie.getTitle()),
-            } else if (voltage < 0) {
+                        movie.getYear(),
-                System.out.println("警告：发现负数，数据已跳过");
+                        movie.getRating(),
-            } else if (voltage >= 1 && voltage <= 100) {
+                        escapeCSV(movie.getGenre()),
-                validCount++;
+                        escapeCSV(movie.getDirector()),
-                validSum += voltage;
+                        escapeCSV(movie.getActors()),
+                        escapeCSV(movie.getSynopsis())));
+            }
         }
-            // 其他情况（如>100）不处理
     }
 
-        if (validCount > 0) {
+    private static String escapeCSV(String value) {
-            double average = validSum / validCount;
+        if (value == null) return "";
-            System.out.printf("有效数据个数：%d，平均值：%.2f\n", validCount, average);
+        if (value.contains(",") || value.contains("\n") || value.contains("\"")) {
-        } else {
+            value = value.replace("\"", "\"\"");
-            System.out.println("没有收集到有效数据，打印初始状态");
+            return "\"" + value + "\"";
+        }
+        return value;
     }
+
+    private static void analyzeData(List<Movie> movies) {
+        System.out.println("\n=== 数据分析结果 ===");
+        
+        // 1. 评分分布
+        System.out.println("\n1. 评分分布：");
+        Map<Double, Long> ratingDistribution = movies.stream()
+                .collect(Collectors.groupingBy(Movie::getRating, Collectors.counting()));
+        ratingDistribution.entrySet().stream()
+                .sorted(Map.Entry.comparingByKey())
+                .forEach(entry -> System.out.printf("评分 %.1f: %d 部\n", entry.getKey(), entry.getValue()));
+        
+        // 2. 年份分布
+        System.out.println("\n2. 年份分布：");
+        Map<Integer, Long> yearDistribution = movies.stream()
+                .collect(Collectors.groupingBy(Movie::getYear, Collectors.counting()));
+        yearDistribution.entrySet().stream()
+                .sorted(Map.Entry.comparingByKey())
+                .forEach(entry -> System.out.printf("年份 %d: %d 部\n", entry.getKey(), entry.getValue()));
+        
+        // 3. 导演作品数排行
+        System.out.println("\n3. 导演作品数排行：");
+        Map<String, Long> directorCount = movies.stream()
+                .collect(Collectors.groupingBy(Movie::getDirector, Collectors.counting()));
+        directorCount.entrySet().stream()
+                .sorted(Map.Entry.<String, Long>comparingByValue().reversed())
+                .limit(10)
+                .forEach(entry -> System.out.printf("%s: %d 部\n", entry.getKey(), entry.getValue()));
+        
+        // 4. 平均评分
+        double averageRating = movies.stream()
+                .mapToDouble(Movie::getRating)
+                .average()
+                .orElse(0);
+        System.out.printf("\n4. 平均评分：%.2f\n", averageRating);
+    }
+
+    private static void displayResults(List<Movie> movies) {
+        System.out.println("\n=== 电影数据列表 ===");
+        System.out.printf("%-50s %-10s %-10s %-30s %-30s\n", "Title", "Year", "Rating", "Genre", "Director");
+        System.out.println("-------------------------------------------------------------------------------------------------------------------------------");
+        
+        for (Movie movie : movies) {
+            System.out.printf("%-50s %-10d %-10.1f %-30s %-30s\n", 
+                    truncate(movie.getTitle(), 50),
+                    movie.getYear(),
+                    movie.getRating(),
+                    truncate(movie.getGenre(), 30),
+                    truncate(movie.getDirector(), 30));
+        }
+    }
+
+    private static String truncate(String text, int maxLength) {
+        return text.length() > maxLength ? text.substring(0, maxLength - 3) + "..." : text;
+    }
+
+    private static void generateCharts(List<Movie> movies) throws IOException {
+        // 1. 评分分布饼图
+        DefaultPieDataset ratingDataset = new DefaultPieDataset();
+        Map<Double, Long> ratingDistribution = movies.stream()
+                .collect(Collectors.groupingBy(Movie::getRating, Collectors.counting()));
+        ratingDistribution.forEach((rating, count) -> ratingDataset.setValue(String.valueOf(rating), count));
+        
+        JFreeChart ratingChart = ChartFactory.createPieChart(
+                "电影评分分布",
+                ratingDataset,
+                true,
+                true,
+                false
+        );
+        ChartUtils.saveChartAsPNG(new File("rating_distribution.png"), ratingChart, 800, 600);
+        
+        // 2. 年份与评分关系图
+        DefaultCategoryDataset yearRatingDataset = new DefaultCategoryDataset();
+        Map<Integer, Double> yearAverageRating = movies.stream()
+                .collect(Collectors.groupingBy(Movie::getYear,
+                        Collectors.averagingDouble(Movie::getRating)));
+        yearAverageRating.forEach((year, avgRating) -> yearRatingDataset.addValue(avgRating, "评分", String.valueOf(year)));
+        
+        JFreeChart yearRatingChart = ChartFactory.createBarChart(
+                "年份与平均评分关系",
+                "年份",
+                "平均评分",
+                yearRatingDataset
+        );
+        ChartUtils.saveChartAsPNG(new File("year_rating_relation.png"), yearRatingChart, 800, 600);
+        
+        System.out.println("\n图表已生成：rating_distribution.png 和 year_rating_relation.png");
     }
 }

W3/Main.java

@@ -1,169 +0,0 @@
-import org.jfree.chart.ChartFactory;
-import org.jfree.chart.ChartUtils;
-import org.jfree.chart.JFreeChart;
-import org.jfree.data.category.DefaultCategoryDataset;
-import org.jfree.data.general.DefaultPieDataset;
-
-import java.io.File;
-import java.io.FileWriter;
-import java.io.IOException;
-import java.util.*;
-import java.util.stream.Collectors;
-
-public class Main {
-    public static void main(String[] args) {
-        try {
-            // 1. 爬取电影数据
-            MovieCrawler crawler = new MovieCrawler();
-            List<Movie> movies = crawler.crawlTopMovies(50); // 爬取50部电影
-            
-            // 2. 数据清洗
-            List<Movie> cleanedMovies = cleanData(movies);
-            
-            // 3. 数据存储
-            saveToCSV(cleanedMovies, "movies.csv");
-            
-            // 4. 数据分析
-            analyzeData(cleanedMovies);
-            
-            // 5. 结果展示
-            displayResults(cleanedMovies);
-            generateCharts(cleanedMovies);
-            
-            System.out.println("爬取完成！共获取了 " + cleanedMovies.size() + " 部电影数据。");
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
-
-    private static List<Movie> cleanData(List<Movie> movies) {
-        return movies.stream()
-                .map(movie -> {
-                    // 去空格
-                    movie.setTitle(movie.getTitle().trim());
-                    movie.setGenre(movie.getGenre().trim());
-                    movie.setDirector(movie.getDirector().trim());
-                    movie.setActors(movie.getActors().trim());
-                    movie.setSynopsis(movie.getSynopsis().trim());
-                    return movie;
-                })
-                .collect(Collectors.toList());
-    }
-
-    private static void saveToCSV(List<Movie> movies, String fileName) throws IOException {
-        try (FileWriter writer = new FileWriter(fileName)) {
-            // 写入表头
-            writer.write("Title,Year,Rating,Genre,Director,Actors,Synopsis\n");
-            
-            // 写入数据
-            for (Movie movie : movies) {
-                writer.write(String.format("%s,%d,%.1f,%s,%s,%s,%s\n",
-                        escapeCSV(movie.getTitle()),
-                        movie.getYear(),
-                        movie.getRating(),
-                        escapeCSV(movie.getGenre()),
-                        escapeCSV(movie.getDirector()),
-                        escapeCSV(movie.getActors()),
-                        escapeCSV(movie.getSynopsis())));
-            }
-        }
-    }
-
-    private static String escapeCSV(String value) {
-        if (value == null) return "";
-        if (value.contains(",") || value.contains("\n") || value.contains("\"")) {
-            value = value.replace("\"", "\"\"");
-            return "\"" + value + "\"";
-        }
-        return value;
-    }
-
-    private static void analyzeData(List<Movie> movies) {
-        System.out.println("\n=== 数据分析结果 ===");
-        
-        // 1. 评分分布
-        System.out.println("\n1. 评分分布：");
-        Map<Double, Long> ratingDistribution = movies.stream()
-                .collect(Collectors.groupingBy(Movie::getRating, Collectors.counting()));
-        ratingDistribution.entrySet().stream()
-                .sorted(Map.Entry.comparingByKey())
-                .forEach(entry -> System.out.printf("评分 %.1f: %d 部\n", entry.getKey(), entry.getValue()));
-        
-        // 2. 年份分布
-        System.out.println("\n2. 年份分布：");
-        Map<Integer, Long> yearDistribution = movies.stream()
-                .collect(Collectors.groupingBy(Movie::getYear, Collectors.counting()));
-        yearDistribution.entrySet().stream()
-                .sorted(Map.Entry.comparingByKey())
-                .forEach(entry -> System.out.printf("年份 %d: %d 部\n", entry.getKey(), entry.getValue()));
-        
-        // 3. 导演作品数排行
-        System.out.println("\n3. 导演作品数排行：");
-        Map<String, Long> directorCount = movies.stream()
-                .collect(Collectors.groupingBy(Movie::getDirector, Collectors.counting()));
-        directorCount.entrySet().stream()
-                .sorted(Map.Entry.<String, Long>comparingByValue().reversed())
-                .limit(10)
-                .forEach(entry -> System.out.printf("%s: %d 部\n", entry.getKey(), entry.getValue()));
-        
-        // 4. 平均评分
-        double averageRating = movies.stream()
-                .mapToDouble(Movie::getRating)
-                .average()
-                .orElse(0);
-        System.out.printf("\n4. 平均评分：%.2f\n", averageRating);
-    }
-
-    private static void displayResults(List<Movie> movies) {
-        System.out.println("\n=== 电影数据列表 ===");
-        System.out.printf("%-50s %-10s %-10s %-30s %-30s\n", "Title", "Year", "Rating", "Genre", "Director");
-        System.out.println("-------------------------------------------------------------------------------------------------------------------------------");
-        
-        for (Movie movie : movies) {
-            System.out.printf("%-50s %-10d %-10.1f %-30s %-30s\n", 
-                    truncate(movie.getTitle(), 50),
-                    movie.getYear(),
-                    movie.getRating(),
-                    truncate(movie.getGenre(), 30),
-                    truncate(movie.getDirector(), 30));
-        }
-    }
-
-    private static String truncate(String text, int maxLength) {
-        return text.length() > maxLength ? text.substring(0, maxLength - 3) + "..." : text;
-    }
-
-    private static void generateCharts(List<Movie> movies) throws IOException {
-        // 1. 评分分布饼图
-        DefaultPieDataset ratingDataset = new DefaultPieDataset();
-        Map<Double, Long> ratingDistribution = movies.stream()
-                .collect(Collectors.groupingBy(Movie::getRating, Collectors.counting()));
-        ratingDistribution.forEach((rating, count) -> ratingDataset.setValue(String.valueOf(rating), count));
-        
-        JFreeChart ratingChart = ChartFactory.createPieChart(
-                "电影评分分布",
-                ratingDataset,
-                true,
-                true,
-                false
-        );
-        ChartUtils.saveChartAsPNG(new File("rating_distribution.png"), ratingChart, 800, 600);
-        
-        // 2. 年份与评分关系图
-        DefaultCategoryDataset yearRatingDataset = new DefaultCategoryDataset();
-        Map<Integer, Double> yearAverageRating = movies.stream()
-                .collect(Collectors.groupingBy(Movie::getYear,
-                        Collectors.averagingDouble(Movie::getRating)));
-        yearAverageRating.forEach((year, avgRating) -> yearRatingDataset.addValue(avgRating, "评分", String.valueOf(year)));
-        
-        JFreeChart yearRatingChart = ChartFactory.createBarChart(
-                "年份与平均评分关系",
-                "年份",
-                "平均评分",
-                yearRatingDataset
-        );
-        ChartUtils.saveChartAsPNG(new File("year_rating_relation.png"), yearRatingChart, 800, 600);
-        
-        System.out.println("\n图表已生成：rating_distribution.png 和 year_rating_relation.png");
-    }
-}