修改为用json格式传递数据

demo/pom.xml

@@ -104,6 +104,12 @@
             <artifactId>tomcat-embed-jasper</artifactId>
             <scope>provided</scope>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>1.2.47</version>
+        </dependency>
     </dependencies>
 
     <build>

demo/src/main/java/com/example/demo/productService/controller/addController.java

@@ -28,7 +28,7 @@ public class addController extends HttpServlet {
             product.setProductDescription(request.getParameter("description"));
             product.setPictureAddress(request.getParameter("address"));
             int result= addPro.add(product);
-            response.setContentType("text/hmtl;charset=utf-8");
+            response.setContentType("text/html;charset=utf-8");
             writer=response.getWriter();
             if(result==1){
                 writer.write("增加成功");

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

@@ -3,25 +3,33 @@ package com.example.demo.searchService.controller;
 
 import com.example.demo.bean.Product;
 import com.example.demo.searchService.service.ProductSearchService;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONObject;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
 @Controller
-public class SearchServiceController {
+public class SearchServiceController extends HttpServlet {
     private ProductSearchService productSearchService;
     @RequestMapping("/search")
-    public List<Product> productSearch(HttpServletRequest request, HttpServletResponse response){
+    public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
+        response.setContentType("text/html;charset=utf-8");
         List<Product> list = new ArrayList<Product>();
         String productName = request.getParameter("productName");
         String category = request.getParameter("category");
         float intrate = Integer.parseInt(request.getParameter("intrate"));
         if(productName!=null){
             list = productSearchService.findByNameLike(productName);
+
             //按关键字搜索
         }else if(category!=null){
             list = productSearchService.findByCategory(category);
@@ -33,6 +41,11 @@ public class SearchServiceController {
             list = productSearchService.findByCount();
             //默认按产品使用的产品的数量由高到低排序
         }
-        return list;
+        String json = JSONObject.toJSONString(list);
+        response.getWriter().print(json);
+
+    }
+    public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException{
+        doPost(request,response);
     }
 }

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

@@ -1,38 +0,0 @@
-package com.example.demo.searchService.controller;
-
-
-import com.example.demo.bean.Product;
-import com.example.demo.searchService.service.ProductSearchService;
-import org.springframework.stereotype.Controller;
-import org.springframework.web.bind.annotation.RequestMapping;
-
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import java.util.ArrayList;
-import java.util.List;
-
-@Controller
-public class SearchServiceController {
-    private ProductSearchService productSearchService;
-    @RequestMapping("/search")
-    public List<Product> productSearch(HttpServletRequest request, HttpServletResponse response){
-        List<Product> list = new ArrayList<Product>();
-        String productName = request.getParameter("productName");
-        String category = request.getParameter("category");
-        float intrate = Integer.parseInt(request.getParameter("intrate"));
-        if(productName!=null){
-            list = productSearchService.findByNameLike(productName);
-            //按关键字搜索
-        }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{
-            list = productSearchService.findByCount();
-            //默认按产品使用的产品的数量由高到低排序
-        }
-        return list;
-    }
-}

demo/src/test/java/com/example/demo/searchService/service/ProductSearchService.java

@@ -1,19 +0,0 @@
-package com.example.demo.searchService.service;
-
-import com.example.demo.bean.Product;
-
-import java.util.List;
-
-public interface ProductSearchService {
-    //按关键字查询
-    List<Product> findByNameLike(String productName);
-
-    //按类别查询
-    List<Product> findByCategory(String category);
-
-    //按利率从高到低
-    List<Product> findByIntrate(float intrate);
-
-    ////默认按产品使用的产品的数量由高到低排序
-    List<Product> findByCount();
-}

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

@@ -1,45 +0,0 @@
-package com.example.demo.searchService.service.impl;
-
-import com.example.demo.Dao.productMapper;
-import com.example.demo.Dao.usageDateMapper;
-import com.example.demo.bean.Product;
-import com.example.demo.searchService.service.ProductSearchService;
-import org.springframework.beans.factory.annotation.Autowired;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class ProductSearchServiceImpl implements ProductSearchService {
-    @Autowired
-    productMapper productMapper;
-    usageDateMapper usageDateMapper;
-    Product product;
-
-    @Override
-    public List<Product> findByNameLike(String productName){
-        return productMapper.findByNameLike(productName);
-    }
-
-    @Override
-    public List<Product> findByCategory(String category){
-        return productMapper.findByCategory(category);
-    }
-
-    @Override
-    public List<Product> findByIntrate(float intrate){
-        return productMapper.findByIntrate(intrate);
-    }
-
-    @Override
-    public List<Product> findByCount(){
-        List<Product> productList = new ArrayList<Product>();
-        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]);
-            productList.add(product);
-        }
-        return productList;
-    }
-
-}