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Versuchen, Daten von MySQL mit Hibernate zu erhalten, und in thymeleaf list (loop) anzeigen

2017-04-15 2 views
0

Ich arbeite an einem Tutorial, wo ich im Grunde versuche, Informationen aus MYSQL mit Hibernate zu bekommen und es mit Thymeleaf/Spring Boot anzuzeigen. Scheint, ich bekomme nur einen 500 Fehler und die App stürzt ab. Entschuldigt sich im Voraus für die neue Frage. Sicher sein einfachesVersuchen, Daten von MySQL mit Hibernate zu erhalten, und in thymeleaf list (loop) anzeigen

My Main:

@SpringBootApplication 
public class Application { 
    public static void main(String[] args) { 


     SpringApplication.run(Application.class); 
    } 
}

Mein Repository:

@Repository 
public class CustomerDaoImpl implements CustomerDao{ 

    private SessionFactory sessionFactory; 

    @Override 
    @Transactional 
    public List<Customer> getCustomers() { 

     Session session = sessionFactory.getCurrentSession(); 

     Query<Customer> theQuery = session.createQuery("FROM CUSTOMER", Customer.class); 

     List<Customer> customers = theQuery.getResultList(); 
     System.out.println("We have " + customers); 

     return customers; 
    } 
}

HTML/thymeleaf Vorlage:

<!DOCTYPE html> 
<html xmlns:th="http://www.thymeleaf.org"> 
<head lang="en"></head> 
<body> 
<div id="containers"> 
    <div id="content"> 
    <table> 
    <th th:each="name:${names}"> 
     <tr>First Name</tr> 
     <tr>Last Name</tr> 
     <tr>Email</tr> 
    </th> 
     <tr th:text="${name}">name</tr> 
    </table> 
    </div> 
    </div> 
</body> 
</html>

application.properties:

spring.datasource.url=jdbc:mysql://localhost:3306/web_customer_tracker?useSSL=false 
spring.datasource.username=springstudent 
spring.datasource.password=springstudent 
spring.datasource.driver-class-name=com.mysql.jdbc.Driver 
spring.jpa.hibernate.ddl-auto=create-drop 
spring.jpa.hibernate.show-sql=true 
spring.jpa.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect 

spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate5.SpringSessionContext

Stack Trace:

2017-04-15 14:23:36.096 INFO 4339 --- [   main] com.luv2code.springtutorial.Application : Starting Application on Ronalds-MacBook-Pro.local with PID 4339 (/Users/ronald/IdeaProjects/springtutorial/target/classes started by ronald in /Users/ronald/IdeaProjects/springtutorial) 
2017-04-15 14:23:36.099 INFO 4339 --- [   main] com.luv2code.springtutorial.Application : No active profile set, falling back to default profiles: default 
2017-04-15 14:23:36.368 INFO 4339 --- [   main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot[email protected]64d2d351: startup date [Sat Apr 15 14:23:36 EDT 2017]; root of context hierarchy 
2017-04-15 14:23:37.739 INFO 4339 --- [   main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration' of type [class org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 
2017-04-15 14:23:37.844 INFO 4339 --- [   main] trationDelegate$BeanPostProcessorChecker : Bean 'validator' of type [class org.springframework.validation.beanvalidation.LocalValidatorFactoryBean] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 
2017-04-15 14:23:37.904 INFO 4339 --- [   main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [class org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$3a19c841] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 
2017-04-15 14:23:38.320 INFO 4339 --- [   main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http) 
2017-04-15 14:23:38.343 INFO 4339 --- [   main] o.apache.catalina.core.StandardService : Starting service Tomcat 
2017-04-15 14:23:38.345 INFO 4339 --- [   main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.11 
2017-04-15 14:23:38.515 INFO 4339 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]  : Initializing Spring embedded WebApplicationContext 
2017-04-15 14:23:38.515 INFO 4339 --- [ost-startStop-1] o.s.web.context.ContextLoader   : Root WebApplicationContext: initialization completed in 2152 ms 
2017-04-15 14:23:38.718 INFO 4339 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/] 
2017-04-15 14:23:38.723 INFO 4339 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*] 
2017-04-15 14:23:38.724 INFO 4339 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*] 
2017-04-15 14:23:38.724 INFO 4339 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*] 
2017-04-15 14:23:38.724 INFO 4339 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*] 
2017-04-15 14:23:39.603 INFO 4339 --- [   main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default' 
2017-04-15 14:23:39.629 INFO 4339 --- [   main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [ 
    name: default 
    ...] 
2017-04-15 14:23:39.721 INFO 4339 --- [   main] org.hibernate.Version     : HHH000412: Hibernate Core {5.2.9.Final} 
2017-04-15 14:23:39.724 INFO 4339 --- [   main] org.hibernate.cfg.Environment   : HHH000206: hibernate.properties not found 
2017-04-15 14:23:39.916 INFO 4339 --- [   main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final} 
2017-04-15 14:23:40.100 INFO 4339 --- [   main] org.hibernate.dialect.Dialect   : HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect 
2017-04-15 14:23:40.875 INFO 4339 --- [   main] o.h.t.schema.internal.SchemaCreatorImpl : HHH000476: Executing import script 'org.hiber[email protected]68ddd415' 
2017-04-15 14:23:40.881 INFO 4339 --- [   main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default' 
2017-04-15 14:23:41.420 INFO 4339 --- [   main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot[email protected]64d2d351: startup date [Sat Apr 15 14:23:36 EDT 2017]; root of context hierarchy 
2017-04-15 14:23:41.547 INFO 4339 --- [   main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/list]}" onto public java.lang.String com.luv2code.springtutorial.controller.CustomerController.listCustomers(org.springframework.ui.Model) 
2017-04-15 14:23:41.552 INFO 4339 --- [   main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest) 
2017-04-15 14:23:41.554 INFO 4339 --- [   main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) 
2017-04-15 14:23:41.607 INFO 4339 --- [   main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
2017-04-15 14:23:41.607 INFO 4339 --- [   main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
2017-04-15 14:23:41.693 INFO 4339 --- [   main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
2017-04-15 14:23:42.595 INFO 4339 --- [   main] o.s.j.e.a.AnnotationMBeanExporter  : Registering beans for JMX exposure on startup 
2017-04-15 14:23:42.713 INFO 4339 --- [   main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http) 
2017-04-15 14:23:42.721 INFO 4339 --- [   main] com.luv2code.springtutorial.Application : Started Application in 17.375 seconds (JVM running for 18.266) 
2017-04-15 14:24:26.963 INFO 4339 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]  : Initializing Spring FrameworkServlet 'dispatcherServlet' 
2017-04-15 14:24:26.963 INFO 4339 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet  : FrameworkServlet 'dispatcherServlet': initialization started 
2017-04-15 14:24:26.983 INFO 4339 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet  : FrameworkServlet 'dispatcherServlet': initialization completed in 20 ms 
2017-04-15 14:24:33.082 ERROR 4339 --- [nio-8080-exec-3] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause 

java.lang.NullPointerException: null 
    at com.luv2code.springtutorial.dao.CustomerDaoImpl.getCustomers(CustomerDaoImpl.java:23) ~[classes/:na] 
    at com.luv2code.springtutorial.dao.CustomerDaoImpl$$FastClassBySpringCGLIB$$61ab3e4.invoke(<generated>) ~[classes/:na] 
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) ~[spring-tx-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282) ~[spring-tx-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at com.luv2code.springtutorial.dao.CustomerDaoImpl$$EnhancerBySpringCGLIB$$24cb3ae8.getCustomers(<generated>) ~[classes/:na] 
    at com.luv2code.springtutorial.controller.CustomerController.listCustomers(CustomerController.java:24) ~[classes/:na] 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_121] 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_121] 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_121] 
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_121] 
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:116) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) ~[tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1434) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_121] 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_121] 
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.11.jar:8.5.11] 
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121] 

2017-04-15 14:24:34.056 ERROR 4339 --- [nio-8080-exec-4] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause

Quelle

2017-04-15 Ron Pitt

+0

könnten Sie posten Sie Ihre 'CustomerDaoImpl' Klasse? Der Fehler scheint dort zu sein –

+0

'Ursache java.lang.NullPointerException: null bei com.luv2code.springtutorial.dao.CustomerDaoImpl.getCustomers (CustomerDaoImpl.java:23) ~ [Klassen /: na]' - siehe http://stackoverflow.com/questions/218384/what-is-a-nullpointerexception-and-how-do-fix-it –

+0

Beachten Sie, dass Sie Datenzugriffscode auf mehrere Arten schreiben können. Sie können Hibernate, JDO, JPA, ... verwenden. Bezüglich application.properties bezieht sich spring.jpa auf die JPA-Konfiguration. Normalerweise wird bevorzugt, JPA zu verwenden, weil JEE-Spezifikation ist. Hibernate bietet einen JPA-Adapter. In Bezug auf application.properties können Sie stattdessen eine application.yml erstellen, wenn Sie eine baumähnliche Struktur bevorzugen, die für den Benutzer besser lesbar ist. – andreim

Antwort

0

Ich glaube, Sie Hibernate Session zu injizieren vergessen.

@Autowired private SessionFactory sessionFactory;

oder besser (zu Testzwecken) durch einen Konstruktor:

@Autowired public CustomerDaoImpl(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; }

Quelle

2017-04-15 19:43:49 andreim

+0

Aber ich benutze Spring Boot. Gibt es nicht schon die Hibernate SessionFactory für mich? –

+0

@RonPitt ja sollte es die SessionFactory injizieren, aber in Ihrem Code ist als ein privates Mitglied deklariert. Sie müssen festlegen, dass das private Feld auf eine Instanz von SessionFactory festgelegt wird, die vom ApplicationContext verwaltet wird, indem Sie es mit "@ Autowired" oder "@ Inject" annotieren. Eine andere Möglichkeit besteht darin, einen Konstruktor zu deklarieren, der das private Feld festlegt. Sie können Ihren bevorzugten Weg wählen. – andreim

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