Question

HibernateSpatialJPA类：

 public class HibernateSpatialJPA {

    private static final EntityManagerFactory emFactory;
    static {
        try {
            emFactory = Persistence.createEntityManagerFactory("org.hibernate.events.jpa");
        }catch(Throwable ex){
            System.err.println("Cannot create EntityManagerFactory.");
            throw new ExceptionInInitializerError(ex);
        }
    }
    public static EntityManager createEntityManager() {
        return emFactory.createEntityManager();
    }

    public static void close(){
        emFactory.close();
    }
}

这是经理班：

 public class SavegeojsonManager {

    SavegeojsonEntity theEvent = new SavegeojsonEntity();

    public boolean insert(JSONObject json)
    {
        GeoJSON item = new GeoJSON(json);
        return insert(item);
    }

    public boolean insert(GeoJSON item)
    {
        boolean success=false;
        try {

            String vectorType = item.getType();
            EntityManager em = HibernateSpatialJPA.createEntityManager();
            em.getTransaction().begin();
            theEvent.setVectorType(vectorType);
            em.persist(theEvent);
            em.getTransaction().commit();
            em.close();
            success=true;
        }
        catch (Exception ex) {
            System.out.println(ex.getMessage());
            success = false;

        }
        HibernateSpatialJPA.close();
        return success;
    }
}

这是GeoJsonClass：

   public class GeoJSON
{

    private int id;

    private String type;
    private String data;

    public int getId() { return id; }
    public void setId(int id) {  this.id = id; }

    public String getType() {return type;}
    public void setType(String type) {this.type = type;}

    public String getData() {return data;}
    public void setData(String data) { this.data = data; }

    public GeoJSON() {
    }

    public GeoJSON(JSONObject json) {
        parse(json);
    }


    public GeoJSON parse(JSONObject json) {
        StringWriter out = new StringWriter();
        json.write(out);
        this.data = out.toString();
        this.type = json.getString("type");

        try {
            out.close();
        } catch (IOException ex) {
            System.out.println(ex.getMessage());
            throw new RuntimeException(ex);
        }
        return this;
    }

}

但我无法保存到数据库中，因为错误：

在此输入代码：“提交事务时出错。”

您对此错误有任何疑问吗？

以下是异常堆栈跟踪： -

javax.persistence.RollbackException: Error while committing the transaction
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:92)
at com.springapp.model.SavegeojsonManager.insert(SavegeojsonManager.java:32)
at com.springapp.model.SavegeojsonManager.insert(SavegeojsonManager.java:19)
at com.springapp.mvc.HSpatialController.saveGeoJson(HSpatialController.java:46)
...
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: ERROR: column "vectortype" of relation "savegeojson" does not exist Position: 76 at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1377) at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1300) at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:80) ... 40 more Caused by: org.hibernate.exception.SQLGrammarException: ERROR: column "vectortype" of relation "savegeojson" does not exist Position: 76 at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:122) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110) at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:129) at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81) at com.sun.proxy.$Proxy26.executeUpdate(Unknown Source) at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:56) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2962) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3403) at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:88) at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:362) at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:354) at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:275) at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:326) at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52) at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1214) at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:403) at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101) at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175) at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:75) ... 40 more Caused by: org.postgresql.util.PSQLException: ERROR: column "vectortype" of relation "savegeojson" does not exist Position: 76 at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2062) at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1795) at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257) at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:479) at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:367) at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:321) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122) ... 56 more

Answer 1

您正在将实体SavegeojsonEntity保存到postgresql数据库，此错误表示：

Caused by: org.postgresql.util.PSQLException: ERROR: column "vectortype" of relation "savegeojson" does not exist
      Position: 76

SavegeojsonEntity映射到的表没有列vectortype。检查数据库中表中是否存在该列。如果它不存在，则需要将该列添加到表中。

在spring mvc中提交事务错误时出错？

1 个答案: