Java를 사용하여 CMS 시스템의 데이터 분석 모듈을 작성하는 방법

import java.sql.*;

public class DataExtractor {
  public static void main(String[] args) {
    String url = "jdbc:mysql://localhost:3306/cms";
    String username = "root";
    String password = "password";
    
    try {
      Connection conn = DriverManager.getConnection(url, username, password);
      Statement stmt = conn.createStatement();
      
      String sql = "SELECT * FROM articles";
      ResultSet rs = stmt.executeQuery(sql);
      
      while (rs.next()) {
        String title = rs.getString("title");
        String content = rs.getString("content");
        // 进一步处理数据...
      }
      
      rs.close();
      stmt.close();
      conn.close();
    } catch (SQLException e) {
      e.printStackTrace();
    }
  }
}

import java.util.*;

public class DataProcessor {
  public static void main(String[] args) {
    List<String> titles = new ArrayList<>();
    Map<String, Integer> wordCounts = new HashMap<>();
    
    // 假设已经从数据库中提取了文章标题，并存储在titles列表中
    for (String title : titles) {
      String[] words = title.split(" ");
      
      for (String word : words) {
        if (wordCounts.containsKey(word)) {
          wordCounts.put(word, wordCounts.get(word) + 1);
        } else {
          wordCounts.put(word, 1);
        }
      }
    }
    
    // 输出每个单词的出现次数
    for (Map.Entry<String, Integer> entry : wordCounts.entrySet()) {
      System.out.println(entry.getKey() + ": " + entry.getValue());
    }
  }
}

import org.jfree.chart.*;
import org.jfree.data.category.DefaultCategoryDataset;

public class ResultDisplayer {
  public static void main(String[] args) {
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    
    // 假设已经进行了数据分析，并获取了每个月份的文章数量
    dataset.addValue(100, "文章数量", "1月");
    dataset.addValue(150, "文章数量", "2月");
    dataset.addValue(200, "文章数量", "3月");
    
    JFreeChart chart = ChartFactory.createBarChart(
      "每月文章数量统计", // 图表标题
      "月份", // x轴标签
      "文章数量", // y轴标签
      dataset, // 数据集
      PlotOrientation.VERTICAL, // 图表方向
      true, // 是否显示图例
      true, // 是否生成工具提示
      false // 是否生成URL链接
    );
    
    ChartFrame frame = new ChartFrame("数据分析结果", chart);
    frame.pack();
    frame.setVisible(true);
  }
}