diff --git a/w3/README及AI协作记录.txt b/w3/README及AI协作记录.txt
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+一，代码目的：
+用Java写一段小程序，自动去网上爬西安、成都、兰州、乌鲁木齐的每小时温度，打印出来。
+二，ai协助记录：
+1.询问ai怎么导入URI、HttpClient、HttpRequest、HttpResponse
+2.询问怎么通过二维数组导入城市数据（城市名，经纬度）
+3.通过ai了解到应用try...catch可以让程序在异常的时候不崩溃
+4.询问ai怎么创建HTTP客户端
+5.询问ai拼接API的格式
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diff --git a/w3/WeatherMain.java b/w3/WeatherMain.java
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+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.io.IOException;
+import org.knowm.xchart.*;
+
+public class WeatherMain {
+
+    public static void main(String[] args) {
+        // 西部城市列表：[城市名, 纬度, 经度]
+        String[][] westernCities = {
+            {"西安", "34.2644", "108.9494"},
+            {"成都", "30.5723", "104.0665"},
+            {"兰州", "36.0614", "103.8343"},
+            {"乌鲁木齐", "43.8256", "87.6168"}
+        };
+
+        try {
+            // 1. 创建 HTTP 客户端
+            HttpClient httpClient = HttpClient.newHttpClient();
+
+            // 2. 遍历所有城市
+            for (String[] city : westernCities) {
+                String cityName = city[0];
+                String latitude = city[1];
+                String longitude = city[2];
+
+                // 拼接 API 地址
+                String apiUrl = "https://api.open-meteo.com/v1/forecast"
+                    + "?latitude=" + latitude
+                    + "&longitude=" + longitude
+                    + "&hourly=temperature_2m"
+                    + "&timezone=Asia/Shanghai";
+
+                // 构建 HTTP 请求
+                HttpRequest request = HttpRequest.newBuilder()
+                    .uri(URI.create(apiUrl))
+                    .GET()
+                    .build();
+
+                // 发送请求并获取响应
+                HttpResponse<String> response = httpClient.send(
+                    request,
+                    HttpResponse.BodyHandlers.ofString()
+                );
+
+                // 打印温度表格
+                printTemperatureTable(response.body(), cityName);
+                // ✅ 新增：绘制温度折线图
+                drawTemperatureChart(response.body(), cityName);
+
+                System.out.println("✅ " + cityName + " 天气数据获取完成！\n");
+            }
+
+            System.out.println("==================================");
+            System.out.println("🎉 所有西部城市天气数据爬取完毕！");
+
+        } catch (Exception e) {
+            System.err.println("❌ 爬取过程中发生错误：");
+            e.printStackTrace();
+        }
+    }
+
+    // 打印温度表格
+    private static void printTemperatureTable(String jsonData, String cityName) {
+        try {
+            // 提取时间数组
+            int timeStart = jsonData.indexOf("\"time\":");
+            int timeEnd = jsonData.indexOf("],", timeStart);
+            String timePart = jsonData.substring(timeStart + 7, timeEnd + 1);
+            String[] times = timePart.replace("\"", "").replace("[", "").replace("]", "").split(",");
+
+            // 提取温度数组
+            int tempStart = jsonData.indexOf("\"temperature_2m\":");
+            int tempEnd = jsonData.indexOf("]", tempStart);
+            String tempPart = jsonData.substring(tempStart + 18, tempEnd + 1);
+            String[] temps = tempPart.replace("[", "").replace("]", "").split(",");
+
+            // 打印表头
+            System.out.println("==================================");
+            System.out.println("城市：" + cityName);
+            System.out.println("----------------------------------");
+            System.out.printf("%-20s %-10s%n", "时间", "温度(°C)");
+            System.out.println("----------------------------------");
+
+            // 只打印前24小时数据
+            int maxShow = Math.min(24, Math.min(times.length, temps.length));
+            for (int i = 0; i < maxShow; i++) {
+                System.out.printf("%-20s %-10s%n", times[i], temps[i]);
+            }
+            System.out.println("----------------------------------\n");
+        } catch (Exception e) {
+            System.out.println("⚠️ " + cityName + " 数据解析失败");
+            e.printStackTrace();
+        }
+    }
+
+    // ✅ 新增：绘制温度折线图并保存为 PNG
+    private static void drawTemperatureChart(String jsonData, String cityName) throws IOException {
+        // 提取温度数组
+        int tempStart = jsonData.indexOf("\"temperature_2m\":");
+        int tempEnd = jsonData.indexOf("]", tempStart);
+        String tempPart = jsonData.substring(tempStart + 18, tempEnd + 1);
+        String[] temps = tempPart.replace("[", "").replace("]", "").split(",");
+
+        // 准备绘图数据（取前24小时）
+        double[] hours = new double[24];
+        double[] temperatures = new double[24];
+        for (int i = 0; i < 24; i++) {
+            hours[i] = i; // 用 0~23 代表一天中的小时
+            temperatures[i] = Double.parseDouble(temps[i].trim());
+        }
+
+        // 创建图表
+        XYChart chart = new XYChartBuilder()
+            .width(800)    // 图片宽度
+            .height(600)   // 图片高度
+            .title(cityName + " 逐小时温度变化")
+            .xAxisTitle("小时（0~23）")
+            .yAxisTitle("温度 (°C)")
+            .build();
+
+        // 添加数据系列
+        chart.addSeries("温度", hours, temperatures);
+
+        // 保存为 PNG 图片（项目根目录下）
+        String fileName = cityName + "_温度折线图.png";
+        BitmapEncoder.saveBitmap(chart, fileName, BitmapEncoder.BitmapFormat.PNG);
+        System.out.println("📊 图表已保存：" + fileName);
+    }
+}
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