Postgres如何进行多个交易
[英]Postgres how to make more than one transaction
问题描述
I have a problem makin more than one insertion into the database, my problem initial it was that i couldn't insert into the table beacause i need the last id of the last record inserted. 
我在数据库中不止一个插入问题，最初的问题是我无法插入表，因为我需要插入最后一条记录的最后一个ID。
if i try to insert more records to the table, it doesn't work, why? 如果我尝试在表中插入更多记录，那行不通，为什么？ that's because is inserted until transaction is commited,so it only will insert one record with the last id inserted. 那是因为插入直到提交事务为止，所以它只会插入最后一个id插入的一条记录。 here is my java code: 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();
}
}
}
i tried to commit at the end of the loop but it gives an error. 我试图在循环结束时提交，但它给出了一个错误。 there is another way to fix the table sequence without the workaround? 没有解决方法，还有另一种方法可以修复表序列？ if not, what i can do? 如果没有，我该怎么办？ i need to insert those records in a sequence. 我需要按顺序插入这些记录。
EDIT: i fixed the problem with the table sequence, still i can't save those more than one record into the database, there is no stack trace errors this time. 编辑：我解决了表序列的问题，仍然我不能将那些多个记录保存到数据库中，这次没有堆栈跟踪错误。
Stack trace: 堆栈跟踪：
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]
1 个解决方案
解决方案1
1 已采纳 2015-12-07 17:55:12
The problem isn't your commit. 问题不在于您的承诺。 It's a NullPointerException line 192. 这是NullPointerException第192行。
I don't know which line 192 is, but I bet it's a line outside of your transaction block. 我不知道第192行是哪一行，但我敢打赌，这是您交易记录栏之外的一行。 When you try to rollback the transaction, you get another Exception from the Catch - Rollback . 当您尝试回滚事务时，您会从Catch - Rollback获得另一个异常。
Look for the Null variable, and you may solve your problem. 查找Null变量，就可以解决您的问题。 You may also check if the transaction is open when you try to Rollback. 当您尝试回滚时，您还可以检查事务是否已打开。 Or add more try {} catch {} blocks since your code is very error prone. 或添加更多try {} catch {}块，因为您的代码很容易出错。
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