微信登录与预测成绩功能

jsjp-service/src/main/java/com/miaxis/newgzpt/service/impl/GzptExamInfoServiceImpl.java

@@ -10,6 +10,8 @@ import com.miaxis.newgzpt.service.IGzptExamInfoService;
 import org.springframework.stereotype.Service;
 
 import javax.annotation.Resource;
+import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.util.List;
 
 /**
@@ -39,6 +41,7 @@ public class GzptExamInfoServiceImpl extends ServiceImpl<GzptExamInfoMapper, Gzp
     }
 
 
+    @Override
     public double calculatePassRate(GzptExamInfoDTO examInfoDTO) {
         // 1. 知识掌握度评估（权重40%）
         double knowledgeScore = this.calculateKnowledgeScore(examInfoDTO.getWrongCount(), examInfoDTO.getPracticedCount(), examInfoDTO.getTotalQuestions());
@@ -52,7 +55,11 @@ public class GzptExamInfoServiceImpl extends ServiceImpl<GzptExamInfoMapper, Gzp
 
         // 综合计算（标准化到0-100%）
         double passRate = (knowledgeScore * 0.4) + (mockExamScore * 0.55) + adjustment;
-        return Math.max(0, Math.min(100, passRate));
+
+        double passRateMin = Math.max(0, Math.min(100, passRate));
+        BigDecimal bd = new BigDecimal(passRateMin).setScale(2, RoundingMode.DOWN);
+
+        return bd.doubleValue();
     }