按关键字查询,产品使用热度查询，利率高低排序，按类别查询。

demo/src/test/java/com/example/demo/Dao/productMapper.java

@@ -13,7 +13,7 @@ public interface productMapper {
     @Select("select * from product where productName = #{category}")
     public List<Product> findByCategory(String category);
 
-    @Select("select * from product where intrate = #{intrate} order by intrate DESC")
+    @Select("select * from product where intrate = #{intrate} order by intrate ASC")
     public List<Product> findByIntrate(float intrate);
 
     @Select("select * from product where productNum = #{productNum}")

demo/src/test/java/com/example/demo/Dao/usageDateMapper.java

@@ -14,8 +14,8 @@ public interface usageDateMapper {
     @Select("select * from usagedate")
     public List<UsageDate> select();
 
-    @Select("select productNum from usageDate group by productNum order by count(productNum) ASC")
+    @Select("select productNum from usageDate group by productNum order by count(productNum) DESC")
-    public List<Integer> findByCount();
+    public List<Integer> selectByCount();
 
     @Insert("insert into usagedate(checkNum, productNum, userNum," +
             " bankAccount, bankNum, year, amount, startTime)" +

demo/src/test/java/com/example/demo/searchService/service/impl/ProductSearchServiceImpl.java

@@ -32,7 +32,7 @@ public class ProductSearchServiceImpl implements ProductSearchService {
     @Override
     public List<Product> findByCount(){
         List<Product> productList = new ArrayList<Product>();
-        List<Integer> listusage = usageDateMapper.findByCount();
+        List<Integer> listusage = usageDateMapper.selectByCount();
         int[] arr = listusage.stream().mapToInt(Integer::valueOf).toArray();
         for(int i=0;i<arr.length;i++){
             product = productMapper.selectProductByProductNum(arr[i]);