增加平均星数

src/com/hellogithub/entity/projectEntity.java

@@ -151,4 +151,14 @@ public class projectEntity {
     public void setNum(long num) {
         this.num = num;
     }
+
+    double average;
+
+    public double getAverage() {
+        return average;
+    }
+
+    public void setAverage(double average) {
+        this.average = average;
+    }
 }

src/com/hellogithub/service/projectService.java

@@ -8,6 +8,7 @@ import com.hellogithub.dao.commentDao;
 import com.hellogithub.dao.projectDao;
 import com.hellogithub.dao.supportDao;
 import com.hellogithub.entity.categoryEntity;
+import com.hellogithub.entity.commentEntity;
 import com.hellogithub.entity.projectEntity;
 import com.hellogithub.entity.supportEntity;
 
@@ -146,6 +147,22 @@ public class projectService {
         projectEntity projectEntity = projectDao.selectProById(id);
         categoryEntity categoryEntity = categoryDao.retNum(projectEntity.getCategoryId());
         projectEntity.setCategoryName(categoryEntity.getCategoryName());
+
+        List<commentEntity> commentEntityList = commentDao.selectByProjectId(id);
+
+        if(commentEntityList.size() != 0)
+        {
+            int sum = 0;
+            for(int i= 0;i<commentEntityList.size();i++)
+            {
+                sum +=commentEntityList.get(i).getStar();
+            }
+            double average = sum/commentEntityList.size();
+            projectEntity.setAverage(average);
+        }
+       else{
+            projectEntity.setAverage(0);
+        }
         return projectEntity;
     }
     public int addProjectLookcount(String id ){