增加小说内容TXT文本存储方案（一行配置切换）

novel-front/src/main/java/com/java2nb/novel/page/PageController.java

@@ -5,16 +5,14 @@ import com.java2nb.novel.core.bean.PageBean;
 import com.java2nb.novel.core.bean.UserDetails;
 import com.java2nb.novel.core.utils.ThreadLocalUtil;
 import com.java2nb.novel.entity.*;
-import com.java2nb.novel.service.AuthorService;
-import com.java2nb.novel.service.BookService;
-import com.java2nb.novel.service.NewsService;
-import com.java2nb.novel.service.UserService;
+import com.java2nb.novel.service.*;
 import com.java2nb.novel.vo.BookCommentVO;
 import com.java2nb.novel.vo.BookSettingVO;
 import lombok.RequiredArgsConstructor;
 import lombok.SneakyThrows;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -36,6 +34,9 @@ import java.util.concurrent.ThreadPoolExecutor;
 @Controller
 public class PageController extends BaseController {
 
+    @Value("${txt.save.path}")
+    private String fileSavePath;
+
     private final BookService bookService;
 
     private final NewsService newsService;
@@ -44,6 +45,8 @@ public class PageController extends BaseController {
 
     private final UserService userService;
 
+    private final BookContentService bookContentService;
+
     private final ThreadPoolExecutor threadPoolExecutor;
 
 
@@ -174,7 +177,7 @@ public class PageController extends BaseController {
      */
     @SneakyThrows
     @RequestMapping("/book/{bookId}/{bookIndexId}.html")
-    public String indexList(@PathVariable("bookId") Long bookId, @PathVariable("bookIndexId") Long bookIndexId, HttpServletRequest request, Model model) {
+    public String bookContent(@PathVariable("bookId") Long bookId, @PathVariable("bookIndexId") Long bookIndexId, HttpServletRequest request, Model model) {
         //加载小说基本信息线程
         CompletableFuture<Book> bookCompletableFuture = CompletableFuture.supplyAsync(() -> {
             //查询书籍
@@ -210,7 +213,7 @@ public class PageController extends BaseController {
         //加载小说内容信息线程
         CompletableFuture<BookContent> bookContentCompletableFuture = CompletableFuture.supplyAsync(() -> {
             //查询内容
-            BookContent bookContent = bookService.queryBookContent(bookIndexId);
+            BookContent bookContent = bookContentService.queryBookContent(bookId, bookIndexId);
             log.debug("加载小说内容信息线程结束");
             return bookContent;
         }, threadPoolExecutor);

novel-front/src/main/java/com/java2nb/novel/service/BookContentService.java

@@ -0,0 +1,11 @@
+package com.java2nb.novel.service;
+
+import com.java2nb.novel.entity.BookContent;
+
+import java.util.List;
+
+public interface BookContentService {
+
+    BookContent queryBookContent(Long bookId, Long bookIndexId);
+
+}

novel-front/src/main/java/com/java2nb/novel/service/impl/DbBookContentServiceImpl.java

@@ -0,0 +1,38 @@
+package com.java2nb.novel.service.impl;
+
+import com.java2nb.novel.entity.BookContent;
+import com.java2nb.novel.mapper.BookContentDynamicSqlSupport;
+import com.java2nb.novel.mapper.BookContentMapper;
+import com.java2nb.novel.service.BookContentService;
+import lombok.RequiredArgsConstructor;
+import org.mybatis.dynamic.sql.render.RenderingStrategies;
+import org.mybatis.dynamic.sql.select.render.SelectStatementProvider;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+import static com.java2nb.novel.mapper.BookContentDynamicSqlSupport.bookContent;
+import static org.mybatis.dynamic.sql.SqlBuilder.isEqualTo;
+import static org.mybatis.dynamic.sql.SqlBuilder.update;
+import static org.mybatis.dynamic.sql.select.SelectDSL.select;
+
+
+@Service
+@RequiredArgsConstructor
+@ConditionalOnProperty(prefix = "txt.save", name = "storage", havingValue = "db")
+public class DbBookContentServiceImpl implements BookContentService {
+
+    private final BookContentMapper bookContentMapper;
+
+    @Override
+    public BookContent queryBookContent(Long bookId, Long bookIndexId) {
+        SelectStatementProvider selectStatement = select(BookContentDynamicSqlSupport.id, BookContentDynamicSqlSupport.content)
+                .from(bookContent)
+                .where(BookContentDynamicSqlSupport.indexId, isEqualTo(bookIndexId))
+                .limit(1)
+                .build()
+                .render(RenderingStrategies.MYBATIS3);
+        return bookContentMapper.selectMany(selectStatement).get(0);
+    }
+}

novel-front/src/main/java/com/java2nb/novel/service/impl/FileBookContentServiceImpl.java

@@ -0,0 +1,39 @@
+package com.java2nb.novel.service.impl;
+
+import com.java2nb.novel.core.utils.FileUtil;
+import com.java2nb.novel.entity.BookContent;
+import com.java2nb.novel.service.BookContentService;
+import lombok.RequiredArgsConstructor;
+import lombok.SneakyThrows;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.stereotype.Service;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+@ConditionalOnProperty(prefix = "txt.save", name = "storage", havingValue = "file")
+public class FileBookContentServiceImpl implements BookContentService {
+
+    @Value("${txt.save.path}")
+    private String fileSavePath;
+
+    @SneakyThrows
+    @Override
+    public BookContent queryBookContent(Long bookId, Long bookIndexId) {
+        BufferedReader in = new BufferedReader(new FileReader(fileSavePath + "/" + bookId + "/" + bookIndexId + ".txt"));
+        StringBuffer sb = new StringBuffer();
+        String str;
+        while ((str = in.readLine()) != null) {
+            sb.append(str);
+        }
+        in.close();
+        return new BookContent() {{
+            setIndexId(bookIndexId);
+            setContent(sb.toString());
+        }};
+    }
+}