Product creation doesn't work (under Spring MV

Question

Well, the code is working under the Test Enviroment, but not on the front context of the application. This is driving me crazy to be honest.

Here is the controller:

package org.admios.nuevoproyecto.controller;

import java.util.List;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.validation.BindingResult;
import org.admios.nuevoproyecto.dao.ProductDAO;
import org.admios.nuevoproyecto.model.Product;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;

import org.apache.log4j.Logger;
import org.springframework.web.bind.annotation.PathVariable;

import static java.lang.System.out;

@Controller
@RequestMapping("/product")
public class ProductController {

    private static Logger logger = Logger.getLogger(ProductController.class);

    @Autowired
    ProductDAO pdi;

    @InitBinder
    public void setAllowedFields(WebDataBinder dataBinder) {
        dataBinder.setDisallowedFields("id");
    }

    @RequestMapping(value="/list")
    public void listAllProducts() {
        List<Product> products = pdi.getProducts();

        for (Product product : products) {
            System.out.println("Title: " + product.getTitle());
            System.out.println("Description: " + product.getDescription());
            System.out.println("Price: " + product.getPrice());
            System.out.println("--------");
        }
    }

    @RequestMapping(value="/add", method=RequestMethod.POST)
    public String addProduct(@ModelAttribute Product product, BindingResult result) {
        logger.info("Entrando en el metodo para agregar nuevo producto");

//      Product newProduct = new Product();
//      newProduct.setTitle("Titulo del producto2s");
//      newProduct.setDescription("Descripcion del producto");
//      newProduct.setPrice(220f);

        System.out.println(product.getPrice());

        Product savedProduct = pdi.saveProduct(product);

        System.out.println(savedProduct.getId());

        return "hello";
    }

    @RequestMapping(value="/form")
    public String viewForm() {
        out.println("entering viewForm()");
        return "addproduct";
    }

    @RequestMapping(value="/view/{id}", method=RequestMethod.GET)
    public void viewProduct(@PathVariable("id") Long id) {
        System.out.println(id);
    }

    @ModelAttribute("product")
    public Product getProductObject() {
        out.println("entering getProductObject()");
        return new Product();
    }
}

The DAO implementation:

package org.admios.nuevoproyecto.dao;

import java.util.List;
import javax.persistence.EntityManagerFactory;
import org.admios.nuevoproyecto.model.Product;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.jpa.support.JpaDaoSupport;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

@Repository
public class ProductDaoImp extends JpaDaoSupport implements ProductDAO {

    private static Logger log = Logger.getLogger(ProductDaoImp.class);

    @Autowired
    public ProductDaoImp(EntityManagerFactory entityManagerFactory) {
        super.setEntityManagerFactory(entityManagerFactory);
    }

    @Override
    public List<Product> getProducts() {
        return getJpaTemplate().find("select p from Product p");
    }

    @Override
    @Transactional(propagation = Propagation.REQUIRED, readOnly = false)
    public Product saveProduct(Product product) {
        log.info("Trying to create a new product");

        Product newProduct = getJpaTemplate().merge(product);
        log.info(newProduct.getDescription());
        log.info(newProduct.getTitle());
        log.info(newProduct.getId());
        log.info(newProduct.getPrice());

        return newProduct;
    }

    @Override
    public void removeProduct(Product product) {
        getJpaTemplate().remove(product);
    }

    @Override
    public Product getProductById(Integer id) {
        return getJpaTemplate().find(Product.class, id);
    }

}

The applicationContext looks like this: http://pastie.org/1175350

Answer 1

1.Create transaction manager as follow :

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" >  
    <property name="persistenceUnitName" value="persistanceUnit"/>  
    <property name="dataSource" ref="dataSource"/>  
    <property name="persistenceXmlLocation" value="classpath:persistence.xml"/> 
    <property name="jpaVendorAdapter">  
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="showSql" value="${db.orm.showsql}" />              
            <property name="generateDdl" value="${db.orm.generateDdl}" />               
            <property name="database" value="${db.type}"/>  
            <property name="databasePlatform" value="${db.orm.dialect}" />
        </bean>
    </property>  
    <property name="jpaProperties">
        <props>
            <prop key="hibernate.hbm2ddl.auto">create</prop>
        </props>
    </property>
</bean>

2.use persistance.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence  http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
  <persistence-unit name="persistanceUnit" transaction-type="RESOURCE_LOCAL">
    <description>Oracle db Persistence Unit</description>   
    <class>com.company.YourModelClass</class>
    <properties/>
  </persistence-unit>
</persistence>

3.Add following annotation in applicationContext.xml

<context:component-scan base-package="com.yourcompany.basepackage" />

4.annoatate your Entitymanager in service class like:

 @PersistenceContext
 private EntityManager em = null;

5.Inject TrasnsactionManager to :

private PlatformTransactionManager platformTransactionManager = null;

6.persist object like:

platformTransactionManager .persist(obj);

Answer 2

Have you tried with getJpaTemplate().persist(Object)?