Я хочу получить данные о продукте в базе данных, но он выдает excepion org.hibernate.hql.internal.ast.QuerySyntaxException: Продукт не отображается

Question

Я продолжаю получать исключение. Я попытался решить эту проблему в течение нескольких дней теперь ...

Пожалуйста, помогите мне ...

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.hibernate.hql.internal.ast.QuerySyntaxException: Product is not mapped [from Product] 
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:981) 
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:860) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:621) 
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:845) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) 

Это мой ProductController

package com.controller; 

import java.util.List; 

import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.stereotype.Controller; 
import org.springframework.ui.Model; 
import org.springframework.web.bind.annotation.ModelAttribute; 
import org.springframework.web.bind.annotation.PathVariable; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RequestMethod; 
import org.springframework.web.servlet.ModelAndView; 

import com.model.Categories; 
import com.model.Product; 
import com.service.ProductService; 

@Controller 
public class ProductController { 

@Autowired 
private ProductService productService; 

// Getters and Setters 

public ProductService getProductService() { 
    return productService; 
} 

public void setProductService(ProductService productService) { 
    this.productService = productService; 
} 

// Request Mapping 

@RequestMapping("/getAllProducts") 
public ModelAndView getAllProducts() { 
    List<Product> products = productService.getAllProducts(); 
    return new ModelAndView("productList", "products", products); 
} 

@RequestMapping("getProductById/{productId}") 
public ModelAndView getProductById(@PathVariable(value = "productId") String productId) { 
    Product product = productService.getProductById(productId); 
    return new ModelAndView("productPage", "productObj", product); 
} 

@RequestMapping("/delete/{productId}") 
public String deleteProduct(@PathVariable(value = "productId") String productId) { 
    productService.deleteProduct(productId); 
    return "redirect:/getAllProducts"; 
} 

@RequestMapping(value = "/admin/product/addProduct", method = RequestMethod.GET) 
public String getProductForm(Model model) { 
    Product product = new Product(); 
    Categories category = new Categories(); 
    category.setCategoryId("1"); 
    product.setProductCategory(category); 
    model.addAttribute("productFormObj", product); 
    return "productForm"; 
} 

@RequestMapping(value = "/admin/product/addProduct", method = RequestMethod.POST) 
public String addProduct(@ModelAttribute(value = "productFormObj") Product product) { 
    productService.addProduct(product); 
    return "redirect:/getAllProducts"; 
} 

} 

Это мой ProductClass

package com.model; 

import java.util.Locale.Category; 

import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.JoinColumn; 
import javax.persistence.ManyToOne; 
import javax.persistence.Table; 

@Entity 
@Table(name = "product") 
public class Product { 

@Id 
@Column 
@GeneratedValue(strategy = GenerationType.AUTO) 
private String productId; 
@Column 
private String productDescription; 
@Column 
private String productManufacturer; 
@Column 
private String productName; 
@Column 
private double productPrice; 
@Column(name="stockunit") 
private String unitStock; 
@ManyToOne 
@JoinColumn(name="categoryId") 
private Categories productCategory; 

// Getters and Setter 

public String getProductId() { 
    return productId; 
} 

public Categories getProductCategory() { 
    return productCategory; 
} 

public String getProductDescription() { 
    return productDescription; 
} 

public String getProductManufacturer() { 
    return productManufacturer; 
} 

public String getProductName() { 
    return productName; 
} 

public double getProductPrice() { 
    return productPrice; 
} 

public String getUnitStock() { 
    return unitStock; 
} 

public void setProductId(String productId) { 
    this.productId = productId; 
} 

public void setProductCategory(Categories category) { 
    this.productCategory = category; 
} 

public void setProductDescription(String productDescription) { 
    this.productDescription = productDescription; 
} 

public void setProductManufacturer(String productManufacturer) { 
    this.productManufacturer = productManufacturer; 
} 

public void setProductName(String productName) { 
    this.productName = productName; 
} 

public void setProductPrice(double productPrice) { 
    this.productPrice = productPrice; 
} 

public void setUnitStock(String unitStock) { 
    this.unitStock = unitStock; 
} 

//Constructors 
public Product(String productId, Categories productCategory, String  productDescription, String productManufacturer, 
     String productName, double productPrice, String unitStock) { 
    super(); 
    this.productId = productId; 
    this.productCategory = productCategory; 
    this.productDescription = productDescription; 
    this.productManufacturer = productManufacturer; 
    this.productName = productName; 
    this.productPrice = productPrice; 
    this.unitStock = unitStock; 
} 
public Product(){ 

} 
} 

Это мое приложение Контекст

<!-- for Entity Classes annotated Classes package --> 
    <property name="packagesToScan"> 
     <list> 
      <value>com.model.Product</value> 
      <value>com.model.Categories</value> 
     </list> 
    </property> 
</bean> 

Мой Категория Класс

import java.util.List; 

import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.Id; 
import javax.persistence.OneToMany; 
import javax.persistence.Table; 

@Entity 
@Table(name = "categories") 
public class Categories { 

@Id 
private String categoryId; 
@Column 
private String Categories; 
@OneToMany(mappedBy = "categories") 
private List<Product> product; 

//And Respective Getters and Setters 

ProductList страница

<tbody> 
      <c:forEach items="${products}" var="prod"> 
      <tr> 
      <td>${prod.productId}</td> 
      <td>${prod.productCategory}</td> 
      <td>${prod.productName}</td> 
      <td>${prod.productPrice}</td> 
      <td>${prod.unitStock}</td> 
      <td>${prod.productDescription}</td> 
      <td>${prod.productManufacturer}</td> 
      <td> 
      <a href="getProductById/${prod.productId}"><span class="glyphicon glyphicon-info"></span></a> 
      <a href="delete/${prod.productId}"><span class="glyphicon glyphicon-trash"></span></a> 
      </td> 
      </tr> 
      </c:forEach> 

Answer 1

После долгого анализировать я нашел решение для эта проблема

Я изменил код в моем daoImpl. это более старый код.

List<Product> products = session.createQuery("from Product").list(); 

Я изменил это

List<Product> products = session.createCriteria(Product.class).list(); 

И некоторые изменения в Appication контексте как @ v.ladynev сказал:

<property name="packagesToScan"> 
    <list> 
    <value>com.model</value> 
    </list> 
</property> 

Answer 2

Вы должны указать пакет здесь, а не классы

<property name="packagesToScan"> 
    <list> 
    <value>com.model</value> 
    </list> 
</property>