numsPerRow=4

src/main/java/com/example/freshonline/service/GoodsService.java

@@ -54,6 +54,8 @@ public class GoodsService {
      *   price_range: List<BigDecimal> price_range: Arrays.asList(minInit: MAX_PRICE, maxInit: MIN_PRICE)
      *   goods_total: Integer goods_total
      */
+    Integer numPerRow = 4, rowsPerPage = 5;
+
     public JSONObject getSearch(JSONObject param){
         try {
             Class.forName("com.mysql.cj.jdbc.Driver");
@@ -122,7 +124,6 @@ public class GoodsService {
         }
 
         String sql_page;
-        Integer numPerRow = 5, rowsPerPage = 5;
         Integer item_low = (page-1) * numPerRow * rowsPerPage, item_high = page * numPerRow * rowsPerPage;
         sql_page = "\n limit " + item_low + "," + item_high;
 
@@ -200,6 +201,7 @@ public class GoodsService {
         output.put("price_range", JSONObject.toJSONString(price_range));
         output.put("brand_list", JSONObject.toJSONString(new ArrayList<>(brand_set)));
         output.put("goods_total", goods_total);
+        output.put("page", page);
 
         return output;
     }

src/main/resources/application.properties

@@ -4,7 +4,7 @@
 spring.datasource.url=jdbc:mysql://localhost:3306/FreshOnline?useUnicode=true&characterEncoding=utf8&allowPublicKeyRetrieval=true&useSSL=false
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 spring.datasource.username=root
-spring.datasource.password=Bin86087
+spring.datasource.password=
 spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
 mybatis.mapper-locations=classpath:mapper/*.xml
 mybatis.type-aliases-package=com.example.freshonline.dao
\ No newline at end of file