public class UserService {
public UserService(UserRepository userRepository) {
this.userRepository = userRepository;
}
public void setUserRepository(UserRepository userRepository) {
this.userRepository = userRepository;
}
// ...
}
<bean id="userService" class="com.example.UserService">
<constructor-arg ref="userRepository" />
</bean>
<bean id="userRepository" class="com.example.UserRepositoryImpl" />
@Entity
@Table(name = "users")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column(name = "username")
private String username;
// ...
}
@Repository
public class UserRepository {
@Autowired
private SessionFactory sessionFactory;
public void saveUser(User user) {
Session session = sessionFactory.getCurrentSession();
session.save(user);
}
// ...
}
<bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="com.example.models" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
@Controller
public class UserController {
@RequestMapping("/user/{id}")
public String getUser(@PathVariable int id, Model model) {
User user = userService.getUserById(id);
model.addAttribute("user", user);
return "user";
}
}
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.example")
public class AppConfig implements WebMvcConfigurer {
@Bean
public InternalResourceViewResolver viewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setPrefix("/WEB-INF/views/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
// ...
}
<servlet>
<servlet-name>app</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/app-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>app</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
