我' m遵循简单教程并获取类未映射错误。我发现了很多关于这个的帖子,他们说我必须使用我的实体类名。但是我在这里使用实体类名称作为Pizza(我的数据库表名称是pizzas)。我仍然得到错误。可以有人帮忙吗?
道上课。import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
import com.kaveen.model.Pizza;
public class PizzaDao {
@Autowired
private SessionFactory sessionFactory;
public void setSessionFactory(SessionFactory sf){
this.sessionFactory = sf;
}
@SuppressWarnings({ "rawtypes", "unchecked" })
@Transactional
public List<Pizza> findAll() {
Session session = this.sessionFactory.getCurrentSession();
List pizzas = session.createQuery("from Pizza").list();
return pizzas;
}
}
实体类
package com.kaveen.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="pizzas")
public class Pizza {
@Id
@GeneratedValue
private int id;
@Column
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
控制器
package com.kaveen.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.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.kaveen.dao.PizzaDao;
import com.kaveen.model.Pizza;
@Controller
@RequestMapping("/")
public class PizzaController {
@Autowired
private PizzaDao pizzaDao;
@RequestMapping(method = RequestMethod.GET)
public String list(Model model) {
List<Pizza> pizzas = pizzaDao.findAll();
model.addAttribute("pizzas", pizzas);
return "index";
}
}
servlet-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<!-- Enable @Controller annotation support -->
<mvc:annotation-driven />
<!-- Map simple view name such as "test" into /WEB-INF/test.jsp -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/" />
<property name="suffix" value=".jsp" />
</bean>
<bean id="pizzaDao" class="com.kaveen.dao.PizzaDao">
</bean>
<!-- Scan classpath for annotations (eg: @Service, @Repository etc) -->
<context:component-scan base-package="com.kaveen.controller" />
<!-- <context:component-scan base-package="com.kaveen.dao" />
<context:component-scan base-package="com.kaveen.model" /> -->
<!-- JDBC Data Source. It is assumed you have MySQL running on localhost
port 3306 with username root and blank password. Change below if it's not
the case -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/pizzashop" />
<property name="username" value="root" />
<property name="password" value="kaveen" />
<property name="validationQuery" value="SELECT 1" />
</bean>
<!-- Hibernate Session Factory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan">
<array>
<value>com.kaveen.dao</value>
</array>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQLDialect
</value>
</property>
</bean>
<!-- Hibernate Transaction Manager -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!-- Activates annotation based transaction management -->
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-
class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
<url-pattern>/index</url-pattern>
</servlet-mapping>
</web-app>