修改controller

demo/pom.xml

@@ -103,6 +103,12 @@
             <artifactId>tomcat-embed-jasper</artifactId>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <version>RELEASE</version>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 
     <build>

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

@@ -16,7 +16,7 @@ public interface usageDateMapper {
 
 
     @Select("select productNum from usageDate group by productNum order by count(productNum) DESC")
-    public List<Integer> selectByCount();
+    public List<Long> selectByCount();
 
     @Insert("insert into usagedate(checkNum, productNum, userNum," +
             " bankAccount, bankNum, year, amount, startTime)" +

demo/src/main/java/com/example/demo/searchService/controller/SearchServiceController.java

@@ -22,7 +22,7 @@ import java.util.List;
 //@Controller
 @RestController
 @RequestMapping("/search")
-public class SearchServiceController extends HttpServlet {
+public class SearchServiceController{
     @Autowired
     private ProductSearchService productSearchService;
 
@@ -32,7 +32,7 @@ public class SearchServiceController extends HttpServlet {
         List<Product> list = new ArrayList<Product>();
         String productName = request.getParameter("productName");
         String category = request.getParameter("category");
-        float intrate = Float.parseFloat(request.getParameter("intrate"));
+        //float intrate = Float.parseFloat(request.getParameter("intrate"));
         if(productName!=null){
             list = productSearchService.findByNameLike(productName);
 
@@ -40,24 +40,22 @@ public class SearchServiceController extends HttpServlet {
         }else if(category!=null){
             list = productSearchService.findByCategory(category);
             //按产品类别搜索
-        }else if(intrate!=0){
-            list = productSearchService.findByIntrate(intrate);
-            //按利率排序由低到高
+//        }else if(intrate!=0){
+//            list = productSearchService.findByIntrate(intrate);
+//            //按利率排序由低到高
         }else{
             list = productSearchService.findByCount();
             //默认按产品使用的产品的数量由高到低排序
         }
-//        String json = JSONObject.toJSONString(list);
-//        response.getWriter().print(json);
         return list;
     }
 
-    @PostMapping("/showIndex")
-    public void showPro(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException{
+    @RequestMapping(value = "/showIndex",method = RequestMethod.POST)
+    public List<Product> showPro(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException{
         List<Product> products = productSearchService.findByCount();
-        String json = JSONObject.toJSONString(products);
-        System.out.println(json);
         response.setCharacterEncoding("utf-8");
-        response.getWriter().print(json);
+        return products;
+        //String json = JSONObject.toJSONString(list);
+        // response.getWriter().print(json);
     }
 }

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

@@ -36,8 +36,8 @@ public class ProductSearchServiceImpl implements ProductSearchService {
     public List<Product> findByCount(){
         Product product = new Product();
         List<Product> productList = new ArrayList<Product>();
-        List<Integer> listusage = usageDateMapper.selectByCount();
-        int[] arr = listusage.stream().mapToInt(Integer::valueOf).toArray();
+        List<Long> listusage = usageDateMapper.selectByCount();
+        long [] arr = listusage.stream().mapToLong(t->t.longValue()).toArray();
         for(int i=0;i<arr.length;i++){
             product = productMapper.selectProductByProductNum(arr[i]);
             productList.add(product);

demo/src/main/resources/static/index.html

@@ -178,9 +178,9 @@
                 setInterval('AutoScroll("#aui-show")', 3000)
             });
 
-            window.onload(function requestData(){
+            $(function () {
                 $.ajax({
-                    url: "/showIndex",
+                    url: "/search/showIndex",
                     type: "post",
                     dataType: "json",
                     success: function(data){