NoSuchBeanDefinitionException:未定义名为“entityManagerFactory”的bean [英] NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' is defined
问题描述
我有简单的Spring 4 WebMVC应用程序(Java-config),我想添加JPA。
但是当我尝试运行app(在Tomcat上进行了部署)时,我得到:
什么可能是错误来源?
I have simple Spring 4 WebMVC app (Java-config), and I want to add JPA. But when I try to run app (as deloyed on Tomcat) I get: What can be a source of error?
创建名为'indexController'的bean时出错:
自动连接依赖项的注入失败;嵌套异常是
org.springframework.beans.factory.BeanCreationException:无法
autowire字段:org.demo.webtemplate.db.repository.CustSysRepository
org.demo.webtemplate.controllers.IndexController .repository;嵌套
异常是org.springframework.beans.factory.BeanCreationException:
创建名为'custSysRepository'的bean时出错:无法创建$ b类型的内部
bean'(内部bean)#f4da8a0'设置
bean属性'entityManager'时$ b [org.springframework.orm.jpa.SharedEntityManagerCreator];嵌套异常是
org.springframework.beans.factory.BeanCreationException:错误
创建名为'(内部bean)#f4da8a0'的bean:在设置构造函数时无法解析对$'entityManagerFactory'的
引用
参数;嵌套异常是
org.springframework.beans.factory。 NoSuchBeanDefinitionException:没有定义名为'entityManagerFactory'的
bean
初始化程序:
package org.demo.webtemplate;
...
public class SpringWebMvcInitializer implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
ctx.register(Config.class);
ctx.setServletContext(servletContext);
Dynamic servlet = servletContext.addServlet("dispatcher", new DispatcherServlet(ctx));
servlet.addMapping("/");
servlet.setLoadOnStartup(1);
}
}
配置:
package org.demo.webtemplate;
...
@Configuration
@EnableWebMvc
@ComponentScan("pl.bzwbk.webtemplate")
@EnableJpaRepositories("pl.bzwbk.webtemplate.db.repository")
public class Config {
@Bean
public UrlBasedViewResolver setupViewResolver() {
UrlBasedViewResolver resolver = new UrlBasedViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
resolver.setViewClass(JstlView.class);
return resolver;
}
}
控制器:
package org.demo.webtemplate.controllers;
...
@Controller
public class IndexController {
@Autowired
CustSysRepository repository;
@RequestMapping(value = "/", method = RequestMethod.GET)
public String index() {
List<CustSys> clients = repository.findByFullName("SOME NAME");
return "index"+clients .size();
}
}
存储库:
package org.demo.webtemplate.db.repository;
...
public interface CustSysRepository extends JpaRepository<CustSys, Long> {
List<CustSys> findByFullName(String fullName);
}
实体:
package org.demo.webtemplate.db.entity;
...
@Entity
@Table(name = "CUST_SYS")
public class CustSys implements Serializable {
private static final long serialVersionUID = 1L;
...
@Size(max = 255)
@Column(name = "FULL_NAME")
private String fullName;
...
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
...
}
申请.properties:
jdbc.driverClassName=org.hsqldb.jdbc.JDBCDriver
jdbc.url=jdbc:hsqldb:mem:testdb
jdbc.user=sa
jdbc.pass=
推荐答案
您在 Config
类中缺少完整的数据库配置。
请尝试以下示例:
You're missing completly DB configuration in your Config
class.
Try this for example:
@Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("org.hsqldb.jdbc.JDBCDriver");
dataSource.setUrl("jdbc:hsqldb:mem:testdb");
dataSource.setUsername("sa");
dataSource.setPassword("");
return dataSource;
}
@Bean
public EntityManager entityManager() {
return entityManagerFactory().getObject().createEntityManager();
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSource());
em.setPackagesToScan("package.where.your.entites.like.CustSys.are.stored");
return em;
}
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