fix: 修复知识库问题

backend/services/rag-indexer-service/src/main/java/com/datamate/rag/indexer/application/KnowledgeBaseService.java

@@ -2,6 +2,10 @@
 
 import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.datamate.common.infrastructure.exception.BusinessException;
+import com.datamate.common.infrastructure.exception.KnowledgeBaseErrorCode;
+import com.datamate.common.interfaces.PagedResponse;
+import com.datamate.common.interfaces.PagingQuery;
 import com.datamate.common.setting.domain.repository.ModelConfigRepository;
 import com.datamate.rag.indexer.domain.model.FileStatus;
 import com.datamate.rag.indexer.domain.model.KnowledgeBase;
@@ -10,11 +14,10 @@
 import com.datamate.rag.indexer.domain.repository.KnowledgeBaseRepository;
 import com.datamate.rag.indexer.domain.repository.RagFileRepository;
 import com.datamate.rag.indexer.infrastructure.event.DataInsertedEvent;
-import com.datamate.common.infrastructure.exception.BusinessException;
-import com.datamate.common.infrastructure.exception.KnowledgeBaseErrorCode;
-import com.datamate.common.interfaces.PagedResponse;
-import com.datamate.common.interfaces.PagingQuery;
 import com.datamate.rag.indexer.interfaces.dto.*;
+import io.milvus.client.MilvusClient;
+import io.milvus.param.collection.DropCollectionParam;
+import io.milvus.param.dml.DeleteParam;
 import lombok.RequiredArgsConstructor;
 import org.jetbrains.annotations.NotNull;
 import org.springframework.beans.BeanUtils;
@@ -39,7 +42,7 @@ public class KnowledgeBaseService {
     private final RagFileRepository ragFileRepository;
     private final ApplicationEventPublisher eventPublisher;
     private final ModelConfigRepository modelConfigRepository;
-
+    private final MilvusClient milvusClient;
 
     /**
      * 创建知识库
@@ -72,10 +75,13 @@ public void update(String knowledgeBaseId, KnowledgeBaseUpdateReq request) {
         knowledgeBaseRepository.updateById(knowledgeBase);
     }
 
+    @Transactional
     public void delete(String knowledgeBaseId) {
+        KnowledgeBase knowledgeBase = Optional.ofNullable(knowledgeBaseRepository.getById(knowledgeBaseId))
+                .orElseThrow(() -> BusinessException.of(KnowledgeBaseErrorCode.KNOWLEDGE_BASE_NOT_FOUND));
         knowledgeBaseRepository.removeById(knowledgeBaseId);
         ragFileRepository.removeByKnowledgeBaseId(knowledgeBaseId);
-        //  TODO: 删除知识库关联的所有文档
+        milvusClient.dropCollection(DropCollectionParam.newBuilder().withCollectionName(knowledgeBase.getName()).build());
     }
 
     public KnowledgeBaseResp getById(String knowledgeBaseId) {
@@ -136,8 +142,15 @@ public PagedResponse<RagFile> listFiles(String knowledgeBaseId, RagFileReq reque
         return PagedResponse.of(page.getRecords(), page.getCurrent(), page.getTotal(), page.getPages());
     }
 
+    @Transactional(rollbackFor = Exception.class)
     public void deleteFiles(String knowledgeBaseId, DeleteFilesReq request) {
+        KnowledgeBase knowledgeBase = Optional.ofNullable(knowledgeBaseRepository.getById(knowledgeBaseId))
+                .orElseThrow(() -> BusinessException.of(KnowledgeBaseErrorCode.KNOWLEDGE_BASE_NOT_FOUND));
         ragFileRepository.removeByIds(request.getIds());
+        milvusClient.delete(DeleteParam.newBuilder()
+                .withCollectionName(knowledgeBase.getName())
+                .withExpr("metadata[\"rag_file_id\"] in [" + org.apache.commons.lang3.StringUtils.join(request.getIds().stream().map(id -> "\"" + id + "\"").toArray(), ",") + "]")
+                .build());
     }
 
     public PagedResponse<RagChunk> getChunks(String knowledgeBaseId, String ragFileId, PagingQuery pagingQuery) {

backend/services/rag-indexer-service/src/main/java/com/datamate/rag/indexer/infrastructure/event/RagEtlService.java

@@ -8,6 +8,7 @@
 import com.datamate.rag.indexer.domain.model.FileStatus;
 import com.datamate.rag.indexer.domain.model.RagFile;
 import com.datamate.rag.indexer.domain.repository.RagFileRepository;
+import com.datamate.rag.indexer.infrastructure.milvus.MilvusService;
 import com.datamate.rag.indexer.interfaces.dto.ProcessType;
 import com.google.common.collect.Lists;
 import dev.langchain4j.data.document.Document;
@@ -27,11 +28,8 @@
 import dev.langchain4j.data.embedding.Embedding;
 import dev.langchain4j.data.segment.TextSegment;
 import dev.langchain4j.model.embedding.EmbeddingModel;
-import dev.langchain4j.store.embedding.EmbeddingStore;
-import dev.langchain4j.store.embedding.milvus.MilvusEmbeddingStore;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Value;
 import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.event.TransactionPhase;
@@ -55,10 +53,7 @@
 public class RagEtlService {
     private static final Semaphore SEMAPHORE = new Semaphore(10);
 
-    @Value("${datamate.rag.milvus-host:milvus-standalone}")
-    private String milvusHost;
-    @Value("${datamate.rag.milvus-port:19530}")
-    private int milvusPort;
+    private final MilvusService milvusService;
 
     private final RagFileRepository ragFileRepository;
 
@@ -112,7 +107,7 @@ private void processRagFile(RagFile ragFile, DataInsertedEvent event) {
         if (Arrays.asList("html", "htm").contains(file.getFileType().toLowerCase())) {
             document = new HtmlToTextDocumentTransformer().transform(document);
         }
-        document.metadata().put("fileId", ragFile.getFileId());
+        document.metadata().put("rag_file_id", ragFile.getId());
         // 使用文档分块器对文档进行分块
         DocumentSplitter splitter = documentSplitter(event.addFilesReq().getProcessType());
         List<TextSegment> split = splitter.split(document);
@@ -129,7 +124,7 @@ private void processRagFile(RagFile ragFile, DataInsertedEvent event) {
         Lists.partition(split, 20).forEach(partition -> {
             List<Embedding> content = embeddingModel.embedAll(partition).content();
             // 存储嵌入向量到 Milvus
-            embeddingStore(embeddingModel, event.knowledgeBase().getName()).addAll(content, partition);
+            milvusService.embeddingStore(embeddingModel, event.knowledgeBase().getName()).addAll(content, partition);
         });
     }
 
@@ -159,13 +154,4 @@ public DocumentSplitter documentSplitter(ProcessType processType) {
             case DEFAULT_CHUNK -> new DocumentByLineSplitter(1000, 100);
         };
     }
-
-    public EmbeddingStore<TextSegment> embeddingStore(EmbeddingModel embeddingModel, String knowledgeBaseName) {
-        return MilvusEmbeddingStore.builder()
-                .host(milvusHost)
-                .port(milvusPort)
-                .collectionName(knowledgeBaseName)
-                .dimension(embeddingModel.dimension())
-                .build();
-    }
 }

backend/services/rag-indexer-service/src/main/java/com/datamate/rag/indexer/infrastructure/milvus/MilvusService.java

@@ -0,0 +1,44 @@
+package com.datamate.rag.indexer.infrastructure.milvus;
+
+import dev.langchain4j.data.segment.TextSegment;
+import dev.langchain4j.model.embedding.EmbeddingModel;
+import dev.langchain4j.store.embedding.EmbeddingStore;
+import dev.langchain4j.store.embedding.milvus.MilvusEmbeddingStore;
+import io.milvus.client.MilvusClient;
+import io.milvus.client.MilvusServiceClient;
+import io.milvus.param.ConnectParam;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.stereotype.Component;
+
+/**
+ * Milvus 服务类
+ *
+ * @author dallas
+ * @since 2025-11-17
+ */
+@Component
+public class MilvusService {
+    @Value("${datamate.rag.milvus-host:milvus-standalone}")
+    private String milvusHost;
+    @Value("${datamate.rag.milvus-port:19530}")
+    private int milvusPort;
+
+    public EmbeddingStore<TextSegment> embeddingStore(EmbeddingModel embeddingModel, String knowledgeBaseName) {
+        return MilvusEmbeddingStore.builder()
+                .host(milvusHost)
+                .port(milvusPort)
+                .collectionName(knowledgeBaseName)
+                .dimension(embeddingModel.dimension())
+                .build();
+    }
+
+    @Bean
+    public MilvusClient milvusClient() {
+        ConnectParam connectParam = ConnectParam.newBuilder()
+                .withHost(milvusHost)
+                .withPort(milvusPort)
+                .build();
+        return new MilvusServiceClient(connectParam);
+    }
+}

frontend/src/pages/KnowledgeBase/Detail/KnowledgeBaseDetail.tsx

@@ -48,7 +48,7 @@ const KnowledgeBaseDetailPage: React.FC = () => {
     setSearchParams,
     handleFiltersChange,
   } = useFetchData<KBFile>(
-    (params) => queryKnowledgeBaseFilesUsingGet(knowledgeBase?.id, params),
+    (params) => id ? queryKnowledgeBaseFilesUsingGet(id, params) : Promise.resolve({ data: [] }),
     mapFileData
   );
 
@@ -237,4 +237,4 @@ const KnowledgeBaseDetailPage: React.FC = () => {
   );
 };
 
-export default KnowledgeBaseDetailPage;
+export default KnowledgeBaseDetailPage;