小说章节定价规则自定义

novel-front/src/main/java/com/java2nb/novel/controller/UserController.java

@@ -282,6 +282,7 @@ public class UserController extends BaseController {
         if (userDetails == null) {
             return ResultBean.fail(ResponseStatus.NO_LOGIN);
         }
+        buyRecord.setBuyAmount(bookService.queryBookIndex(buyRecord.getBookIndexId()).getBookPrice());
         userService.buyBookIndex(userDetails.getId(),buyRecord);
         return ResultBean.ok();
     }

novel-front/src/main/java/com/java2nb/novel/core/config/BookPriceConfig.java

@@ -0,0 +1,23 @@
+package com.java2nb.novel.core.config;
+
+import lombok.Data;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.stereotype.Component;
+
+import java.math.BigDecimal;
+
+/**
+ * 章节费用配置
+ * @author cd
+ */
+@Component
+@Data
+@ConfigurationProperties(prefix = "book.price")
+public class BookPriceConfig {
+
+    private BigDecimal wordCount;
+
+    private BigDecimal value;
+
+
+}

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

@@ -5,6 +5,7 @@ import com.github.pagehelper.PageHelper;
 import com.github.pagehelper.PageInfo;
 import com.java2nb.novel.core.cache.CacheKey;
 import com.java2nb.novel.core.cache.CacheService;
+import com.java2nb.novel.core.config.BookPriceConfig;
 import com.java2nb.novel.core.enums.ResponseStatus;
 import com.java2nb.novel.core.exception.BusinessException;
 import com.java2nb.novel.core.utils.*;
@@ -88,6 +89,8 @@ public class BookServiceImpl implements BookService {
 
     private final FileService fileService;
 
+    private final BookPriceConfig bookPriceConfig;
+
 
     @SneakyThrows
     @Override
@@ -256,7 +259,7 @@ public class BookServiceImpl implements BookService {
 
     @Override
     public BookIndex queryBookIndex(Long bookIndexId) {
-        SelectStatementProvider selectStatement = select(BookIndexDynamicSqlSupport.id, BookIndexDynamicSqlSupport.bookId, BookIndexDynamicSqlSupport.indexNum, BookIndexDynamicSqlSupport.indexName, BookIndexDynamicSqlSupport.wordCount, BookIndexDynamicSqlSupport.updateTime, BookIndexDynamicSqlSupport.isVip)
+        SelectStatementProvider selectStatement = select(BookIndexDynamicSqlSupport.id, BookIndexDynamicSqlSupport.bookId, BookIndexDynamicSqlSupport.indexNum, BookIndexDynamicSqlSupport.indexName, BookIndexDynamicSqlSupport.wordCount,BookIndexDynamicSqlSupport.bookPrice, BookIndexDynamicSqlSupport.updateTime, BookIndexDynamicSqlSupport.isVip)
                 .from(bookIndex)
                 .where(BookIndexDynamicSqlSupport.id, isEqualTo(bookIndexId))
                 .build()
@@ -560,6 +563,10 @@ public class BookServiceImpl implements BookService {
                 .and(BookDynamicSqlSupport.authorId, isEqualTo(authorId))
                 .build()
                 .render(RenderingStrategies.MYBATIS3));
+
+        //计算价格
+        int bookPrice = new BigDecimal(wordCount).divide(bookPriceConfig.getWordCount()).multiply(bookPriceConfig.getValue()).intValue();
+
         //更新小说目录表
         int indexNum = 0;
         if (book.getLastIndexId() != null) {
@@ -572,6 +579,7 @@ public class BookServiceImpl implements BookService {
         lastBookIndex.setIndexNum(indexNum);
         lastBookIndex.setBookId(bookId);
         lastBookIndex.setIsVip(isVip);
+        lastBookIndex.setBookPrice(bookPrice);
         lastBookIndex.setCreateTime(currentDate);
         lastBookIndex.setUpdateTime(currentDate);
         bookIndexMapper.insertSelective(lastBookIndex);
@@ -788,6 +796,10 @@ public class BookServiceImpl implements BookService {
                     Date currentDate = new Date();
                     int wordCount = content.length();
 
+                    //计算价格
+                    int bookPrice = new BigDecimal(wordCount).divide(bookPriceConfig.getWordCount()).multiply(bookPriceConfig.getValue()).intValue();
+
+
                     //更新小说目录表
                     int update = bookIndexMapper.update(
                             update(BookIndexDynamicSqlSupport.bookIndex)
@@ -795,6 +807,8 @@ public class BookServiceImpl implements BookService {
                                     .equalTo(indexName)
                                     .set(BookIndexDynamicSqlSupport.wordCount)
                                     .equalTo(wordCount)
+                                    .set(BookIndexDynamicSqlSupport.bookPrice)
+                                    .equalTo(bookPrice)
                                     .set(BookIndexDynamicSqlSupport.updateTime)
                                     .equalTo(currentDate)
                                     .where(BookIndexDynamicSqlSupport.id, isEqualTo(indexId))

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

@@ -284,20 +284,19 @@ public class UserServiceImpl implements UserService {
     public void buyBookIndex(Long userId, UserBuyRecord buyRecord) {
         //查询用户余额
         long balance = userInfo(userId).getAccountBalance();
-        if(balance<10){
+        if(balance<buyRecord.getBuyAmount()){
             //余额不足
             throw new BusinessException(ResponseStatus.USER_NO_BALANCE);
         }
         buyRecord.setUserId(userId);
         buyRecord.setCreateTime(new Date());
-        buyRecord.setBuyAmount(10);
         //生成购买记录
         userBuyRecordMapper.insertSelective(buyRecord);
 
         //减少用户余额
         userMapper.update(update(user)
                 .set(UserDynamicSqlSupport.accountBalance)
-                .equalTo(balance-10)
+                .equalTo(balance-buyRecord.getBuyAmount())
                 .where(id,isEqualTo(userId))
                 .build()
                 .render(RenderingStrategies.MYBATIS3));