修复图片下载问题

backend-java/src/test/java/com/nanri/aiimage/modules/productrisk/service/ProductRiskExcelAssemblyServiceTest.java

@@ -0,0 +1,58 @@
+package com.nanri.aiimage.modules.productrisk.service;
+
+import com.nanri.aiimage.modules.productrisk.model.dto.ProductRiskRowDto;
+import com.nanri.aiimage.modules.productrisk.model.enums.ProductRiskCountryCode;
+import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
+import org.junit.jupiter.api.Test;
+
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+class ProductRiskExcelAssemblyServiceTest {
+
+    private final ProductRiskExcelAssemblyService service = new ProductRiskExcelAssemblyService();
+
+    @Test
+    void completionColumnUsesChineseValueAndCompletedStatusWinsOverFalseDone() throws Exception {
+        Path xlsx = Files.createTempFile("product-risk-result-", ".xlsx");
+        try {
+            ProductRiskRowDto completed = row("SKU-1", "处理完成", Boolean.FALSE);
+            ProductRiskRowDto running = row("SKU-2", "处理中", Boolean.FALSE);
+            ProductRiskRowDto done = row("SKU-3", null, Boolean.TRUE);
+
+            service.writeWorkbook(
+                    xlsx.toFile(),
+                    "店铺A",
+                    Map.of(ProductRiskCountryCode.DE.getSheetName(), List.of(completed, running, done)));
+
+            try (InputStream in = Files.newInputStream(xlsx);
+                 Workbook workbook = new XSSFWorkbook(in)) {
+                Sheet sheet = workbook.getSheet(ProductRiskCountryCode.DE.getSheetName());
+                assertEquals("完成", sheet.getRow(0).getCell(3).getStringCellValue());
+                assertEquals("是", sheet.getRow(1).getCell(3).getStringCellValue());
+                assertNotEquals("false", sheet.getRow(1).getCell(3).getStringCellValue());
+                assertEquals("否", sheet.getRow(2).getCell(3).getStringCellValue());
+                assertEquals("是", sheet.getRow(3).getCell(3).getStringCellValue());
+            }
+        } finally {
+            Files.deleteIfExists(xlsx);
+        }
+    }
+
+    private static ProductRiskRowDto row(String productAsinSku, String status, Boolean done) {
+        ProductRiskRowDto row = new ProductRiskRowDto();
+        row.setShopName("店铺A");
+        row.setProductAsinSku(productAsinSku);
+        row.setStatus(status);
+        row.setDone(done);
+        return row;
+    }
+}

backend-java/src/test/java/com/nanri/aiimage/modules/similarasin/util/SimilarAsinImageEmbedderTest.java

@@ -177,6 +177,25 @@ class SimilarAsinImageEmbedderTest {
         assertNotNull(req.header("Accept-Language"));
     }
 
+    @Test
+    void amazonImageDownloadCandidatesTrySmallerVariantsWithinRetryBudget() {
+        List<String> candidates = SimilarAsinImageEmbedder.downloadCandidates(
+                "https://m.media-amazon.com/images/I/71AGS2r4JML._AC_SX679_.jpg");
+
+        assertEquals(List.of(
+                "https://m.media-amazon.com/images/I/71AGS2r4JML._AC_SX679_.jpg",
+                "https://m.media-amazon.com/images/I/71AGS2r4JML._AC_SY450_.jpg",
+                "https://m.media-amazon.com/images/I/71AGS2r4JML._AC_SX425_.jpg"), candidates);
+    }
+
+    @Test
+    void downloadCandidatesLeaveNonAmazonAndUnsignedUrlsUntouched() {
+        String coze = "https://lf9-bot-platform-tos-sign.coze.cn/bot-studio-bot-platform/bot_files/1/image/jpeg/2/merged_image.jpg?x-expires=1&x-signature=a";
+        assertEquals(List.of(coze), SimilarAsinImageEmbedder.downloadCandidates(coze));
+        assertEquals(List.of("https://cbu01.alicdn.com/O1CN01x.jpg"),
+                SimilarAsinImageEmbedder.downloadCandidates("https://cbu01.alicdn.com/O1CN01x.jpg"));
+    }
+
     @Test
     void buildImageRequestUsesDownloadHeadersForCozeSignedImages() {
         var req = SimilarAsinImageEmbedder.buildImageRequest(