Java NoSuchBeanDefinitionException：未定义名为“entityManagerFactory”的 bean
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NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' is defined
提问by Son
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?
我有简单的 Spring 4 WebMVC 应用程序（Java-config），我想添加 JPA。但是当我尝试运行应用程序（如在 Tomcat 上部署）时，我得到：什么可能是错误的来源？
Error creating bean with name 'indexController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: org.demo.webtemplate.db.repository.CustSysRepository org.demo.webtemplate.controllers.IndexController.repository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'custSysRepository': Cannot create inner bean '(inner bean)#f4da8a0' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#f4da8a0': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' is defined
创建名为“indexController”的 bean 时出错：注入自动装配的依赖项失败；嵌套异常是 org.springframework.beans.factory.BeanCreationException：无法自动装配字段：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：在设置 bean 时无法创建 [org.springframework.orm.jpa.SharedEntityManagerCreator] 类型的内部 bean '(inner bean)#f4da8a0'财产'实体经理'；嵌套异常是 org.springframework.beans.factory.BeanCreationException：创建名为 '(inner bean)#f4da8a0' 的 bean 时出错：无法解析对 bean 'entityManagerFactory' 的引用 在设置构造函数参数时；嵌套异常是 org.springframework.beans.factory。NoSuchBeanDefinitionException：未定义名为“entityManagerFactory”的 bean
Initializer:
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);
}
}
Config:
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;
}
}
Controller:
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();
}
}
Repository:
存储库：
package org.demo.webtemplate.db.repository;
...
public interface CustSysRepository extends JpaRepository<CustSys, Long> {
List<CustSys> findByFullName(String fullName);
}
Entity:
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;
}
...
}
application.properties:
应用程序属性：
jdbc.driverClassName=org.hsqldb.jdbc.JDBCDriver
jdbc.url=jdbc:hsqldb:mem:testdb
jdbc.user=sa
jdbc.pass=
回答by rikica
You're missing completly DB configuration in your Configclass.
您在Config课堂上完全缺少数据库配置。
Try this for example:
试试这个，例如：
@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;
}
回答by Heri
in this questionI posted a full example how to unit test a spring controller which needs an autowired JpaRepository.
在这个问题中，我发布了一个完整的示例，如何对需要自动装配的 JpaRepository 的弹簧控制器进行单元测试。
