fix: 修复导出下载逻辑 — 使用 onDownload + saveAs 替代 sleep

之前只 sleep(5000) 就关浏览器，不配置下载目录也不等待下载完成。
现在用 page.onDownload 捕获下载事件，saveAs 阻塞等待完成，
并校验文件大小防止空文件。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/main/java/com/ets/scraper/EtsScraper.java

@@ -1,26 +1,21 @@
 package com.ets.scraper;
 
 import com.microsoft.playwright.*;
+import com.microsoft.playwright.Frame;
 import com.microsoft.playwright.options.LoadState;
 import com.microsoft.playwright.options.WaitUntilState;
 
-import java.io.BufferedReader;
+import javax.imageio.ImageIO;
-import java.io.FileOutputStream;
+import java.awt.*;
-import java.io.IOException;
+import java.awt.image.BufferedImage;
-import java.io.InputStreamReader;
+import java.io.*;
 import java.net.HttpURLConnection;
 import java.net.URL;
-import java.awt.image.BufferedImage;
-import java.awt.Image;
-import java.awt.Graphics2D;
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
-import javax.imageio.ImageIO;
 
 import static java.nio.file.Files.createDirectories;
 
@@ -41,7 +36,7 @@ public class EtsScraper {
         try {
             createDirectories(SCREENSHOT_DIR);
         } catch (Exception e) {
-            System.err.println("Failed to create screenshots dir: " + e.getMessage());
+            System.err.println("Failed to create directories: " + e.getMessage());
         }
 
         try (Playwright playwright = Playwright.create()) {
@@ -91,6 +86,92 @@ public class EtsScraper {
                     System.out.println("[+] Page title: " + page.title());
                     System.out.println("[+] Page URL: " + page.url());
 
+                    // 点击三联单菜单
+                    System.out.println("[*] Clicking 三联单 menu...");
+                    page.locator("#module_2094F683-C542-4904-B33E-0D227C4DE199").first().click();
+                    sleep(3000);
+
+                    screenshot(page, "after_sanliandan");
+                    System.out.println("[+] 三联单 page title: " + page.title());
+
+                    // 设置日期筛选：选择昨天的日期
+                    java.time.LocalDate yesterday = java.time.LocalDate.now().minusDays(1);
+                    String yesterdayStr = yesterday.format(java.time.format.DateTimeFormatter.ofPattern("yyyy-MM-dd"));
+                    System.out.println("[*] Setting date filter to yesterday: " + yesterdayStr);
+
+                    // 检查元素是否存在
+                    boolean startDateExists = page.locator("#Search_ThreeBillList_startWdate").count() > 0;
+                    boolean endDateExists = page.locator("#Search_ThreeBillList_endWdate").count() > 0;
+                    boolean queryBtnExists = page.locator("#Search_ThreeBillList_Button").count() > 0;
+                    System.out.println("[*] Elements found - startDate: " + startDateExists + ", endDate: " + endDateExists + ", queryBtn: " + queryBtnExists);
+
+                    // 直接设置日期值（WdatePicker 类型输入框）
+                    if (startDateExists) {
+                        System.out.println("[*] Setting start date to: " + yesterdayStr);
+                        page.locator("#Search_ThreeBillList_startWdate").first().fill(yesterdayStr);
+                        sleep(500);
+                    } else {
+                        System.out.println("[!] Start date element not found");
+                    }
+
+                    // 设置结束日期（也用昨天的日期）
+                    if (endDateExists) {
+                        System.out.println("[*] Setting end date to: " + yesterdayStr);
+                        page.locator("#Search_ThreeBillList_endWdate").first().fill(yesterdayStr);
+                        sleep(500);
+                    } else {
+                        System.out.println("[!] End date element not found");
+                    }
+
+                    // 点击查询按钮，等待列表加载
+                    if (queryBtnExists) {
+                        System.out.println("[*] Clicking query button...");
+                        page.locator("#Search_ThreeBillList_Button").first().click();
+
+                        // 等待列表内容出现
+                        try {
+                            page.waitForSelector("tbody tr", new Page.WaitForSelectorOptions()
+                                .setTimeout(30000));
+                            System.out.println("[+] Query completed, list loaded");
+                        } catch (Exception e) {
+                            System.out.println("[!] Wait for list timeout, but query was submitted");
+                        }
+                    } else {
+                        System.out.println("[!] Query button not found");
+                    }
+
+                    screenshot(page, "after_query");
+
+                    // 点击导出按钮
+                    boolean exportBtnExists = page.locator("#Export_ThreeBillList_Button").count() > 0;
+                    if (exportBtnExists) {
+                        System.out.println("[*] Clicking export button...");
+                        Download[] downloadHolder = new Download[1];
+                        page.onDownload((java.util.function.Consumer<Download>) download -> {
+                            downloadHolder[0] = download;
+                        });
+                        page.locator("#Export_ThreeBillList_Button").first().click();
+                        if (downloadHolder[0] != null) {
+                            System.out.println("[*] Waiting for download to complete...");
+                            Download dl = downloadHolder[0];
+                            Path downloadPath = Path.of("downloads");
+                             java.nio.file.Files.createDirectories(downloadPath);
+                            Path savedFile = downloadPath.resolve(dl.suggestedFilename());
+                            dl.saveAs(savedFile);
+                             System.out.println("[+] Downloaded to: " + savedFile);
+                             if (java.nio.file.Files.size(savedFile) == 0) {
+                                 System.out.println("[-] Downloaded file is empty");
+                               } else {
+                                 System.out.println("[+] Download size: " + java.nio.file.Files.size(savedFile) + " bytes");
+                               }
+                        }
+                     } else {
+                        System.out.println("[!] Export button not found");
+                     }
+
+                    screenshot(page, "after_export");
+                    System.out.println("[+] Query and export completed!");
+
                     String content = page.textContent("body");
                     if (content != null) {
                         String preview = content.length() > 500
@@ -108,103 +189,8 @@ public class EtsScraper {
         }
     }
 
-    private static boolean doLogin(Page page) {
-        // Find and fill username
-        String usernameInput = findInput(page, new String[]{
-                "input[placeholder*='用户名']",
-                "input[placeholder*='username']",
-                "input[placeholder*='账号']",
-                "input[name*='user']",
-                "input[name='username']",
-                "input[type='text']",
-        });
-        if (usernameInput == null) {
-            System.out.println("[-] Could not find username input");
-            return false;
-        }
-
-        // Find and fill password
-        String passwordInput = findInput(page, new String[]{
-                "input[placeholder*='密码']",
-                "input[placeholder*='password']",
-                "input[name*='pass']",
-                "input[name='password']",
-                "input[name='pwd']",
-                "input[type='password']",
-        });
-        if (passwordInput == null) {
-            System.out.println("[-] Could not find password input");
-            return false;
-        }
-
-        System.out.println("[*] Filling credentials...");
-        page.locator(usernameInput).first().fill(USERNAME);
-        page.locator(passwordInput).first().fill(PASSWORD);
-        sleep(500);
-
-        // Find and click submit, or press Enter
-        String submitBtn = findSubmit(page);
-        if (submitBtn != null) {
-            System.out.println("[*] Clicking submit button: " + submitBtn);
-            page.locator(submitBtn).first().click();
-        } else {
-            System.out.println("[*] No submit button found, pressing Enter");
-            page.locator(passwordInput).first().press("Enter");
-        }
-
-        try {
-            page.waitForLoadState(LoadState.DOMCONTENTLOADED,
-                    new Page.WaitForLoadStateOptions().setTimeout(10000));
-            return true;
-        } catch (Exception e) {
-            System.out.println("[!] Navigation timed out, but credentials were submitted");
-            return true;
-        }
-    }
-
     public static boolean doLoginWithCaptcha(Page page) throws Exception {
-        // Find and fill username
+        // Recognize captcha first
-        String usernameInput = findInput(page, new String[]{
-                "input[placeholder*='用户名']",
-                "input[placeholder*='username']",
-                "input[placeholder*='账号']",
-                "input[name*='user']",
-                "input[name='username']",
-                "input[type='text']",
-        });
-        if (usernameInput == null) {
-            System.out.println("[-] Could not find username input");
-            return false;
-        }
-
-        // Find and fill password
-        String passwordInput = findInput(page, new String[]{
-                "input[placeholder*='密码']",
-                "input[placeholder*='password']",
-                "input[name*='pass']",
-                "input[name='password']",
-                "input[name='pwd']",
-                "input[type='password']",
-        });
-        if (passwordInput == null) {
-            System.out.println("[-] Could not find password input");
-            return false;
-        }
-
-        // Find and fill captcha
-        String captchaInput = findInput(page, new String[]{
-                "input[placeholder*='验证码']",
-                "input[placeholder*='captcha']",
-                "input[name*='captcha']",
-                "input[name='code']",
-                "input[type='text']",
-        });
-        if (captchaInput == null) {
-            System.out.println("[-] Could not find captcha input");
-            return false;
-        }
-
-        // Recognize captcha
         Path captchaPath = SCREENSHOT_DIR.resolve("captcha.png");
         System.out.println("[*] Recognizing captcha with Ollama...");
         String captchaText = recognizeCaptcha(captchaPath);
@@ -214,21 +200,18 @@ public class EtsScraper {
         }
         System.out.println("[+] Captcha recognized: " + captchaText);
 
+        // Fill using correct ID selectors
         System.out.println("[*] Filling credentials...");
-        page.locator(usernameInput).first().fill(USERNAME);
+        page.locator("#inputLoginUser").first().fill(USERNAME);
-        page.locator(passwordInput).first().fill(PASSWORD);
+        sleep(300);
-        page.locator(captchaInput).first().fill(captchaText);
+        page.locator("#inputLoginPassWord").first().fill(PASSWORD);
+        sleep(300);
+        page.locator("#txt_ValidatePic").first().fill(captchaText);
         sleep(500);
 
-        // Click submit or press Enter
+        // Click submit button
-        String submitBtn = findSubmit(page);
+        System.out.println("[*] Clicking login button...");
-        if (submitBtn != null) {
+        page.locator("#inputLoginButton").first().click();
-            System.out.println("[*] Clicking submit button: " + submitBtn);
-            page.locator(submitBtn).first().click();
-        } else {
-            System.out.println("[*] No submit button found, pressing Enter");
-            page.locator(captchaInput).first().press("Enter");
-        }
 
         try {
             page.waitForLoadState(LoadState.DOMCONTENTLOADED,