NoSuchBeanDefinitionException：未定义名为“entityManagerFactory”的bean
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上进行部署）时，我得到：可能是错误的来源是什么？
创建名为’indexController’的bean时出错：注入自动连接的依赖项失败; 嵌套exception是org.springframework.beans.factory.BeanCreationException：无法自动assembly字段：org.demo.webtemplate.db.repository.CustSysRepository org.demo.webtemplate.controllers.IndexController.repository; 嵌套exception是org.springframework.beans.factory.BeanCreationException：创建名为’custSysRepository’的bean时出错：设置bean时无法创建[org.springframework.orm.jpa.SharedEntityManagerCreator]类型的内部bean’（内部bean）＃f4da8a0′ property’entalManager’; 嵌套exception是org.springframework.beans.factory.BeanCreationException：创建名为’（内部bean）#f4da8a0’的bean时出错：在设置构造函数参数时无法解析对bean’entalManagerFactory’的引用; 嵌套exception是org.springframework.beans.factory。 NoSuchBeanDefinitionException：未定义名为“entityManagerFactory”的bean
初始化：
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 clients = repository.findByFullName("SOME NAME"); return "index"+clients .size(); } }
库：
package org.demo.webtemplate.db.repository; ... public interface CustSysRepository extends JpaRepository { List 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; } ... }
application.properties：
jdbc.driverClassName=org.hsqldb.jdbc.JDBCDriver jdbc.url=jdbc:hsqldb:mem:testdb jdbc.user=sa jdbc.pass=
您在Config类中缺少完整的数据库配置。
试试这个例子：
@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; }
在这个问题中，我发布了一个完整的例子，说明如何对需要自动assembly的JpaRepository的弹簧控制器进行unit testing。