diff --git a/app/.env b/app/.env
index ef3e12b..ffc438a 100644
--- a/app/.env
+++ b/app/.env
@@ -11,9 +11,9 @@ zn_username=%E8%87%AA%E5%8A%A8%E5%8C%96_Robot
 client_name=ShuFuAI
 
 
-# java_api_base=http://47.111.163.154:18080
+java_api_base=http://47.111.163.154:18080
 # java_api_base=http://127.0.0.1:18080
 # java_api_base=http://8.136.19.173:18080
-java_api_base=http://121.196.149.225:18080
+# java_api_base=http://121.196.149.225:18080
 
 
diff --git a/backend-java/src/main/java/com/nanri/aiimage/modules/appearancepatent/service/AppearancePatentTaskService.java b/backend-java/src/main/java/com/nanri/aiimage/modules/appearancepatent/service/AppearancePatentTaskService.java
index d2ec25c..6bdd3f9 100644
--- a/backend-java/src/main/java/com/nanri/aiimage/modules/appearancepatent/service/AppearancePatentTaskService.java
+++ b/backend-java/src/main/java/com/nanri/aiimage/modules/appearancepatent/service/AppearancePatentTaskService.java
@@ -86,6 +86,8 @@ public class AppearancePatentTaskService {
     private static final String STATUS_SUCCESS = "SUCCESS";
     private static final String STATUS_FAILED = "FAILED";
     private static final String CONTENT_TYPE_XLSX = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
+    private static final int RESULT_ROWS_READ_RETRY_LIMIT = 3;
+    private static final long RESULT_ROWS_READ_RETRY_DELAY_MS = 500L;
     private static final List<String> RESULT_HEADERS = List.of(
             "id",
             "asin",
@@ -759,12 +761,17 @@ public class AppearancePatentTaskService {
         }
         String payloadJson = writeJson(rows == null ? List.of() : rows, "结果序列化失败");
         payloadJson = writeJson(new ArrayList<>(persistedRows.values()), "appearance patent chunk payload merge failed");
-        String storedPayload = transientPayloadStorageService.storeChunkPayload(MODULE_TYPE, taskId, scopeHash, chunkIndex, payloadJson);
-        transientPayloadStorageService.deleteReplacedPayloadIfNeeded(chunk.getPayloadJson(), storedPayload);
+        String oldPayload = chunk.getPayloadJson();
+        String storedPayload = transientPayloadStorageService.storeChunkPayloadVersioned(MODULE_TYPE, taskId, scopeHash, chunkIndex, payloadJson);
         chunk.setPayloadJson(storedPayload);
         chunk.setPayloadHash(DigestUtil.sha256Hex(payloadJson));
         chunk.setUpdatedAt(LocalDateTime.now());
-        taskChunkMapper.updateById(chunk);
+        int updated = taskChunkMapper.updateById(chunk);
+        if (updated <= 0) {
+            transientPayloadStorageService.deletePayloadIfPresent(storedPayload);
+            throw new IllegalStateException("appearance patent chunk payload update failed");
+        }
+        transientPayloadStorageService.deleteReplacedPayloadIfNeeded(oldPayload, storedPayload);
     }
 
     private List<AppearancePatentResultRowDto> expandRows(List<AppearancePatentResultRowDto> representatives,
@@ -1122,7 +1129,7 @@ public class AppearancePatentTaskService {
 
     private void assembleResultWorkbook(FileTaskEntity task, FileResultEntity result) {
         AppearancePatentParsedPayloadDto parsed = readParsedPayload(task);
-        Map<String, AppearancePatentResultRowDto> resultMap = loadPersistedResultRows(task.getId());
+        Map<String, AppearancePatentResultRowDto> resultMap = loadPersistedResultRowsWithRetry(task.getId(), parsed.getAllItems().size());
         long resolvedRows = parsed.getAllItems().stream()
                 .filter(row -> findResultRow(row, resultMap) != null || findResultRowByAsin(row.getAsin(), resultMap) != null)
                 .count();
@@ -1131,6 +1138,9 @@ public class AppearancePatentTaskService {
                 .count();
         log.info("[appearance-patent] assemble workbook taskId={} parsedRows={} resultRows={} resolvedRows={} reasonRows={}",
                 task.getId(), parsed.getAllItems().size(), resultMap.size(), resolvedRows, reasonRows);
+        if (!parsed.getAllItems().isEmpty() && resultMap.isEmpty()) {
+            throw new BusinessException("外观专利检测结果为空，请稍后重试生成结果文件");
+        }
         File outputDir = new File(storageProperties.getLocalTempDir(), "appearance-patent-result");
         if (!outputDir.exists() && !outputDir.mkdirs()) {
             throw new BusinessException("创建结果目录失败");
@@ -1164,6 +1174,33 @@ public class AppearancePatentTaskService {
         return result;
     }
 
+    private Map<String, AppearancePatentResultRowDto> loadPersistedResultRowsWithRetry(Long taskId, int expectedParsedRows) {
+        Map<String, AppearancePatentResultRowDto> result = loadPersistedResultRows(taskId);
+        if (expectedParsedRows <= 0 || !result.isEmpty()) {
+            return result;
+        }
+        for (int attempt = 1; attempt <= RESULT_ROWS_READ_RETRY_LIMIT && result.isEmpty(); attempt++) {
+            sleepBeforeResultRowsRetry(attempt);
+            result = loadPersistedResultRows(taskId);
+            if (!result.isEmpty()) {
+                log.info("[appearance-patent] result rows recovered after retry taskId={} attempt={} rows={}",
+                        taskId, attempt, result.size());
+                return result;
+            }
+            log.warn("[appearance-patent] result rows still empty after retry taskId={} attempt={}/{}",
+                    taskId, attempt, RESULT_ROWS_READ_RETRY_LIMIT);
+        }
+        return result;
+    }
+
+    private void sleepBeforeResultRowsRetry(int attempt) {
+        try {
+            Thread.sleep(RESULT_ROWS_READ_RETRY_DELAY_MS * attempt);
+        } catch (InterruptedException ex) {
+            Thread.currentThread().interrupt();
+        }
+    }
+
     private void writeResultWorkbook(File xlsx, AppearancePatentParsedPayloadDto parsed, Map<String, AppearancePatentResultRowDto> resultMap) {
         try (SXSSFWorkbook workbook = new SXSSFWorkbook(200); FileOutputStream fos = new FileOutputStream(xlsx)) {
             Sheet sheet = workbook.createSheet("外观专利检测结果");
diff --git a/backend-java/src/main/java/com/nanri/aiimage/modules/task/service/TransientPayloadStorageService.java b/backend-java/src/main/java/com/nanri/aiimage/modules/task/service/TransientPayloadStorageService.java
index d840320..afb3d32 100644
--- a/backend-java/src/main/java/com/nanri/aiimage/modules/task/service/TransientPayloadStorageService.java
+++ b/backend-java/src/main/java/com/nanri/aiimage/modules/task/service/TransientPayloadStorageService.java
@@ -55,6 +55,13 @@ public class TransientPayloadStorageService {
         return store("task-chunk", moduleType, taskId, scopeHash, entryKey, content, true);
     }
 
+    public String storeChunkPayloadVersioned(String moduleType, Long taskId, String scopeHash, Integer chunkIndex, String content) {
+        String entryKey = chunkIndex == null
+                ? UUID.randomUUID().toString()
+                : "chunk-" + chunkIndex + "-" + UUID.randomUUID();
+        return store("task-chunk", moduleType, taskId, scopeHash, entryKey, content, true);
+    }
+
     public String resolvePayload(String value, String errorMessage) {
         String pointer = extractPointer(value);
         if (pointer == null) {