我有一个问题makin不止一个插入数据库，我的问题初始是因为我不能插入表中因为我需要插入最后一个记录的最后一个id。
如果我尝试在表格中插入更多记录，它不起作用，为什么？这是因为在提交事务之前插入，因此它只会插入一个插入了最后一个id的记录。 这是我的java代码：
@Service
@Transactional
public class ServicioEvaluacionImpl implements ServicioEvaluacion{
@Autowired
@Qualifier("sfGas")
SessionFactory sf;
Session session;
@Autowired
EncuestaDaoImpl encuestaDao;
@Autowired
ClienteDaoImpl clienteDao;
@Autowired
DelegacionDaoImpl delegacionDao;
@Autowired
ServicioGenericoCRUD servicioCRUD;
public void guardarEvaluacion(String parametros) {
JSONObject obj = new JSONObject(parametros);
JSONObject cliente = obj.getJSONObject("cliente");
Integer lastIdCliente = new Integer(0);
String nombre = cliente.getString("nombre");
String apellidos = cliente.getString("apellidos");
String sexo = cliente.getString("sexo");
String email = cliente.getString("email");
String area = cliente.getString("area");
String puesto = cliente.getString("puesto");
int delegacion = cliente.getInt("delegacion");
Delegacion delegacionObj = delegacionDao.getDelegacion(delegacion);
Cliente clienteObj = new Cliente();
clienteObj.setNombre(nombre);
clienteObj.setApellidos(apellidos);
clienteObj.setEmail(email);
clienteObj.setSexo(sexo);
clienteObj.setPuesto(puesto);
clienteObj.setArea(area);
clienteObj.setDelegacion(delegacionObj);
//clienteDao.setCliente(clienteObj);
Transaction transaction = null;
try{
Session session = sf.getCurrentSession();
//obtiene ultimo id insertado
List<Object> qTemp = servicioCRUD.consultaSQL("Select max(id_cliente) from cliente;");
for(Object registro : qTemp){
lastIdCliente = Integer.parseInt(registro.toString());
}
int ultimoID = lastIdCliente.intValue()+1;
clienteObj.setIdCliente(ultimoID);
servicioCRUD.create(clienteObj);
JSONArray evaluaciones = obj.getJSONArray("evaluaciones");
JSONArray idPregunta = obj.getJSONArray("idPregunta");
JSONArray comentarios = obj.getJSONArray("comentarios");
String sugerencias = obj.getString("sugerencias");
Respuestas respuesta = new Respuestas();
Comentarios comentario = new Comentarios();
Sugerencias sugerencia = new Sugerencias();
respuesta.setCliente(clienteObj);
comentario.setCliente(clienteObj);
sugerencia.setCliente(clienteObj);
java.util.Date date = new java.util.Date();
java.sql.Date sqlDate = new java.sql.Date(date.getTime());
sugerencia.setFecha(sqlDate);
sugerencia.setSugerencia(sugerencias);
for (int i = 0; i < evaluaciones.length(); i++) {
transaction = session.beginTransaction();
Encuesta pregunta = encuestaDao.getEncuesta(idPregunta.getInt(i));
respuesta.setEncuesta(pregunta);
int respuestaID=0;
//obtiene ultimo id de respuesta
qTemp = servicioCRUD.consultaSQL("SELECT max(id_respuesta) FROM respuestas");
for(Object registro : qTemp){
Integer lastIdPregunta = Integer.parseInt(registro.toString());
respuestaID = lastIdPregunta.intValue()+1;
System.out.println("loop::"+i+" -ult id resp: "+ respuestaID);
}
respuesta.setCalificacion((short) evaluaciones.getInt(i));
respuesta.setIdRespuesta(respuestaID);
//insercion respuestas
respuesta.setFecha(sqlDate);
servicioCRUD.create(respuesta);
//si no hay comentarios no insertar
if(!comentarios.getString(i).equals("")){
int commentID = 0;
qTemp = servicioCRUD.consultaSQL("SELECT max(id_comentario) FROM comentarios");
for(Object registro : qTemp){
Integer lastIdComent = Integer.parseInt(registro.toString());
commentID = lastIdComent.intValue()+1;
}
comentario.setEncuesta(pregunta);
comentario.setIdComentario(commentID);
comentario.setComentario(comentarios.getString(i));
comentario.setFecha(sqlDate);
servicioCRUD.create(comentario);
}
transaction.commit();
}
transaction = session.beginTransaction();
if(!sugerencias.equals("")){
int sugerenciaID = 0;
qTemp = servicioCRUD.consultaSQL("SELECT max(id_comentario) FROM comentarios");
for(Object registro : qTemp){
Integer sugerenciaIdComent = Integer.parseInt(registro.toString());
sugerenciaID = sugerenciaIdComent.intValue()+1;
}
sugerencia.setIdSugerencia(sugerenciaID);
servicioCRUD.create(sugerencia);
}
transaction.commit();
}catch(Exception e){
e.printStackTrace();
transaction.rollback();
}finally{
session.flush();
}
}
}
我试图在循环结束时提交，但它给出了一个错误。还有另一种方法来修复表序列而没有解决方法吗？如果没有，我能做什么？我需要按顺序插入这些记录。
修改 我用表序列修复了问题，仍然无法将多个记录保存到数据库中，这次没有堆栈跟踪错误。
堆栈追踪：
11:03:21,812 INFO [stdout] (http-localhost-127.0.0.1-8080-3) loop::0 -ult id resp: 5
11:03:22,118 INFO [stdout] (http-localhost-127.0.0.1-8080-3) loop::1 -ult id resp: 5
11:03:22,195 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) org.hibernate.TransactionException: Transaction not successfully started
11:03:22,195 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:127)
11:03:22,196 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at com.gas.servicioImpl.ServicioEvaluacionImpl.guardarEvaluacion(ServicioEvaluacionImpl.java:163)
11:03:22,196 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at com.gas.rest.EvaluacionController.setEvaluaciones(EvaluacionController.java:24)
11:03:22,196 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
11:03:22,197 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
11:03:22,197 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
11:03:22,197 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at java.lang.reflect.Method.invoke(Method.java:606)
11:03:22,198 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
11:03:22,198 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
11:03:22,198 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
11:03:22,199 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:743)
11:03:22,199 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:672)
11:03:22,200 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:82)
11:03:22,200 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:919)
11:03:22,200 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:851)
11:03:22,201 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953)
11:03:22,201 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:855)
11:03:22,202 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
11:03:22,202 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)
11:03:22,202 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
11:03:22,203 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
11:03:22,203 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
11:03:22,203 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:230)
11:03:22,204 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)
11:03:22,204 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
11:03:22,204 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
11:03:22,205 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
11:03:22,205 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
11:03:22,205 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
11:03:22,206 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
11:03:22,206 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
11:03:22,207 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
11:03:22,207 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
11:03:22,207 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
11:03:22,208 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
11:03:22,208 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
11:03:22,208 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at java.lang.Thread.run(Thread.java:745)
11:03:22,209 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/gasnaturalfenosa].[appServlet]] (http-localhost-127.0.0.1-8080-3) Servlet.service() para servlet appServlet lanzó excepción: java.lang.NullPointerException
at com.gas.servicioImpl.ServicioEvaluacionImpl.guardarEvaluacion(ServicioEvaluacionImpl.java:192) [classes:]
at com.gas.rest.EvaluacionController.setEvaluaciones(EvaluacionController.java:24) [classes:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_79]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_79]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_79]
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215) [spring-web-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) [spring-web-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) [spring-webmvc-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:743) [spring-webmvc-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:672) [spring-webmvc-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:82) [spring-webmvc-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:919) [spring-webmvc-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:851) [spring-webmvc-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953) [spring-webmvc-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:855) [spring-webmvc-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829) [spring-webmvc-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:230) [spring-orm-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106) [spring-web-3.2.13.RELEASE.jar:3.2.13.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_79]
答案 0 :(得分：1)
问题不在于您的提交。它是NullPointerException行192。
我不知道192行是哪一行，但我敢打赌它是你事务块之外的一行。当您尝试回滚事务时，您会从Catch - Rollback获得另一个例外。
查找Null变量，您可以解决您的问题。您还可以在尝试回滚时检查事务是否已打开。或者添加更多try {} catch {}块，因为您的代码非常容易出错。