修改productService包里的类，实现deleteController消息传递成功

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

@@ -33,6 +33,9 @@ public class addController extends HttpServlet {
             if(result==1){
                 writer.write("增加成功");
                 return "/";//返回增加删除修改的总页面
+            }else if(result==-1){
+                writer.write("已存在该产品");
+                return "/";
             }
             writer.write("增加失败");
             return "/";//返回增加的页面

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

@@ -28,6 +28,9 @@ public class deleteController extends HttpServlet {
             if(result==1){
                 writer.write("删除成功");
                 return "/";//返回增加删除修改的总页面
+            }if(result==-1){
+                writer.write("无此业务");
+                return "/";
             }
             writer.write("删除失败");
             return "/";//返回删除的页面

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

@@ -20,11 +20,11 @@ public class updateController extends HttpServlet {
         PrintWriter writer=null;
         Product product=new Product();
         try{
-            product.setProductNum(Integer.parseInt(request.getParameter("productNum")));
+            product.setProductNum(Long.parseLong(request.getParameter("productNum")));
             product.setProductName(request.getParameter("productName"));
             product.setBankNum(Integer.parseInt(request.getParameter("bankNum")));
             product.setCategory(request.getParameter("productName"));
-            product.setIntrate(Integer.parseInt(request.getParameter("intrate")));
+            product.setIntrate(Float.parseFloat(request.getParameter("intrate")));
             product.setProductDescription(request.getParameter("description"));
             product.setPictureAddress(request.getParameter("address"));
             int result= updatePro.update(product);
@@ -33,6 +33,9 @@ public class updateController extends HttpServlet {
             if(result==1){
                 writer.write("修改成功");
                 return "/";//返回增加删除修改的总页面
+            }else if(result==-1){
+                writer.write("此业务不存在");
+                return "/";
             }
             writer.write("修改失败");
             return "/";//返回修改的页面

demo/src/main/java/com/example/demo/productService/service/addPro.java

@@ -17,6 +17,7 @@ public class addPro {
 
       public int add(Product product1){
             ProductHistroy productHistroy = new ProductHistroy();
+            if(productMapper.selectProductByProductNum(product1.getProductNum())!=null)return -1;
             productMapper.addProduct(product1);
             productHistroy.setProductNum(product1.getProductNum());
             productHistroy.setProductName(product1.getProductName());

demo/src/main/java/com/example/demo/productService/service/deletePro.java

@@ -18,7 +18,7 @@ public class deletePro {
 
     public int delete(long productNum){
         ProductHistroy productHistroy = new ProductHistroy();
-
+        if(productMapper.selectProductByProductNum(productNum)==null)return -1;
         Product product = productMapper.selectProductByProductNum(productNum);
         if(product == null)return -1;
         productHistroy.setProductNum(product.getProductNum());

demo/src/main/java/com/example/demo/productService/service/updatePro.java

@@ -4,19 +4,20 @@ import com.example.demo.Dao.productHistroyMapper;
 import com.example.demo.Dao.productMapper;
 import com.example.demo.bean.Product;
 import com.example.demo.bean.ProductHistroy;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
 
-//@Service
+@Service
 public class updatePro {
-   // @Autowired
-    private com.example.demo.productService.service.nowTime nowTime;
-   // @Autowired
+    private nowTime nowTime=new nowTime();
+    @Autowired
     private productMapper productMapper;
-    //@Autowired
+    @Autowired
     private productHistroyMapper proHisMapper;
-    //@Autowired
-    private ProductHistroy productHistroy;
 
     public int update(Product product1){
+        ProductHistroy productHistroy = new ProductHistroy();
+        if(productMapper.selectProductByProductNum(product1.getProductNum())==null)return -1;
         productMapper.updateProduct(product1);
         productHistroy.setProductNum(product1.getProductNum());
         productHistroy.setProductName(product1.getProductName());