I just started learning hibernate last night and its rather fun. I am some trouble calling a stored procedure as a sql-query with hibernate. I have attached the source and the error, please help me. Thanks :)
我昨晚刚开始学冬眠，它很有趣。我在使用hibernate将存储过程调用为sql查询时遇到了一些麻烦。我已经附上了来源和错误，请帮助我。谢谢:)
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="Example" table="example">
<id name="user_id" column="id" >
<generator class="increment"/>
</id>
<property name="user_data">
<column name="data"/>
</property>
</class>
<!-- sql-query must be after class -->
<sql-query name="getRecordsSP" callable="true" >
<return class="Example">
<return-property name="user_id" column="user_id"></return-property>
<return-property name="user_data" column="user_data"></return-property>
</return>
{call getRecords}
</sql-query>
</hibernate-mapping>
This is the java file :::
这是java文件::
import java.util.Iterator;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class SelectProc {
public static void main(String[] args) {
Session session = null;
//String query = "select example.id, example.data from Example example";
try{
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
session = sessionFactory.openSession();
System.out.println("selecting records");
Query q = session.getNamedQuery("getRecordsSP");
// Query q = session.createSQLQuery("call getRecords","",Example.class);
System.out.print("Done");
List l = q.list();
for(Iterator it = l.iterator() ;it.hasNext();){
Object row [] = (Object [])it.next();
System.out.println(row.length);
// System.out.println(row[0]);
// System.out.println("ID " + row[0]);
// System.out.println("Data "+ row[1]);
}
}
catch (Exception e) {
e.printStackTrace();
}
finally{
session.flush();
session.close();
}
}
}
The error is:::
这个错误是:::
call getRecords}
18:33:41,346 WARN JDBCExceptionReporter:38 - SQL Error: 0, SQLState: S0022
18:33:41,347 ERROR JDBCExceptionReporter:46 - Column 'id0_' not found.
18:33:41,348 WARN JDBCExceptionReporter:38 - SQL Error: 0, SQLState: S0022
18:33:41,349 ERROR JDBCExceptionReporter:46 - Column 'id0_' not found.
18:33:41,349 ERROR JDBCExceptionReporter:38 - Could not execute native SQL query
java.sql.SQLException: Column 'id0_' not found.
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1075)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:989)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:929)
at com.mysql.jdbc.ResultSetImpl.findColumn(ResultSetImpl.java:1144)
at com.mysql.jdbc.ResultSetImpl.getInt(ResultSetImpl.java:2813)
at org.hibernate.type.IntegerType.get(IntegerType.java:18)
at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:62)
at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:53)
at org.hibernate.loader.Loader.getKeyFromResultSet(Loader.java:541)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:233)
at org.hibernate.loader.Loader.doQuery(Loader.java:337)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:167)
at org.hibernate.loader.Loader.doList(Loader.java:1201)
at org.hibernate.loader.Loader.list(Loader.java:1186)
at org.hibernate.loader.SQLLoader.list(SQLLoader.java:121)
at org.hibernate.impl.SessionImpl.findBySQL(SessionImpl.java:2212)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:85)
at SelectProc.main(SelectProc.java:28)
org.hibernate.JDBCException: Could not execute native SQL query
at org.hibernate.impl.SessionImpl.findBySQL(SessionImpl.java:2215)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:85)
at SelectProc.main(SelectProc.java:28)
Caused by: java.sql.SQLException: Column 'id0_' not found.
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1075)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:989)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:929)
at com.mysql.jdbc.ResultSetImpl.findColumn(ResultSetImpl.java:1144)
at com.mysql.jdbc.ResultSetImpl.getInt(ResultSetImpl.java:2813)
at org.hibernate.type.IntegerType.get(IntegerType.java:18)
at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:62)
at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:53)
at org.hibernate.loader.Loader.getKeyFromResultSet(Loader.java:541)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:233)
at org.hibernate.loader.Loader.doQuery(Loader.java:337)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:167)
at org.hibernate.loader.Loader.doList(Loader.java:1201)
at org.hibernate.loader.Loader.list(Loader.java:1186)
at org.hibernate.loader.SQLLoader.list(SQLLoader.java:121)
at org.hibernate.impl.SessionImpl.findBySQL(SessionImpl.java:2212)
... 2 more
3 个解决方案
#1
3
According to the documentation, the procedure must return a result set and should be called like this:
根据文件，该过程必须返回一个结果集，应该这样调用:
{ ? = call procedureName(<parameters>) }
So try the following instead:
所以你可以试试下面的方法:
<sql-query name="getRecordsSP" callable="true" >
<return class="Example">
<return-property name="user_id" column="user_id"></return-property>
<return-property name="user_data" column="user_data"></return-property>
</return>
{ ? = call getRecords }
</sql-query>
References
- Hibernate Core Reference Guide
- 16.2.2. Using stored procedures for querying
- 16.2.2。使用存储过程进行查询
- Hibernate Core参考指南16.2.2。使用存储过程进行查询
#2
1
import java.sql.CallableStatement;
import java.sql.ResultSet;
import java.util.Iterator;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class SelectPP {
public static void main(String[] args) {
Session session = null;
//String query = "select example.id, example.data from Example example";
CallableStatement callableStatement = null;
ResultSet resultSet = null;
try{
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
session = sessionFactory.openSession();
System.out.println("selecting records");
// Query q = session.getNamedQuery("getRecordsSP");
// Query q = session.createSQLQuery("call getRecords","",Example.class);
// Query q = session.getNamedQuery("getRecordsSP");
callableStatement = session.connection().prepareCall("{call getRecords}");
callableStatement.execute();
resultSet = callableStatement.getResultSet();
while(resultSet.next()){
System.out.println(resultSet.getInt(1));
System.out.println(resultSet.getString(2));
}
//resultSet.
System.out.print("Done");
//List l = q.list();
// for(Iterator it = l.iterator() ;it.hasNext();){
// Object row [] = (Object []) it.next();
// Example row = (Example) it.next();
// System.out.println(row.getUser_id());
// System.out.println(row.getUser_data());
// System.out.println(row.length);
// System.out.println("ID " + row[0]);
// System.out.println("Data "+ row[1]);
}
catch (Exception e) {
e.printStackTrace();
}
finally{
session.flush();
session.close();
}
}
}
I basically redesign the input without using hibernate getNamedQuery, but the java.sql class and it worked!!!
我基本上不用hibernate getNamedQuery重新设计输入，而是使用java。sql类和它起作用了!!!
#3
0
You could get a Connection as described in the accepted answer on How to get jdbc connection from hibernate session? and run stored functions / procedures against it.
您可以获得一个连接，如已接受的关于如何从hibernate会话获取jdbc连接的答案中所描述的那样?并对其运行存储函数/过程。
#1
3
According to the documentation, the procedure must return a result set and should be called like this:
根据文件，该过程必须返回一个结果集，应该这样调用:
{ ? = call procedureName(<parameters>) }
So try the following instead:
所以你可以试试下面的方法:
<sql-query name="getRecordsSP" callable="true" >
<return class="Example">
<return-property name="user_id" column="user_id"></return-property>
<return-property name="user_data" column="user_data"></return-property>
</return>
{ ? = call getRecords }
</sql-query>
References
- Hibernate Core Reference Guide
- 16.2.2. Using stored procedures for querying
- 16.2.2。使用存储过程进行查询
- Hibernate Core参考指南16.2.2。使用存储过程进行查询
#2
1
import java.sql.CallableStatement;
import java.sql.ResultSet;
import java.util.Iterator;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class SelectPP {
public static void main(String[] args) {
Session session = null;
//String query = "select example.id, example.data from Example example";
CallableStatement callableStatement = null;
ResultSet resultSet = null;
try{
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
session = sessionFactory.openSession();
System.out.println("selecting records");
// Query q = session.getNamedQuery("getRecordsSP");
// Query q = session.createSQLQuery("call getRecords","",Example.class);
// Query q = session.getNamedQuery("getRecordsSP");
callableStatement = session.connection().prepareCall("{call getRecords}");
callableStatement.execute();
resultSet = callableStatement.getResultSet();
while(resultSet.next()){
System.out.println(resultSet.getInt(1));
System.out.println(resultSet.getString(2));
}
//resultSet.
System.out.print("Done");
//List l = q.list();
// for(Iterator it = l.iterator() ;it.hasNext();){
// Object row [] = (Object []) it.next();
// Example row = (Example) it.next();
// System.out.println(row.getUser_id());
// System.out.println(row.getUser_data());
// System.out.println(row.length);
// System.out.println("ID " + row[0]);
// System.out.println("Data "+ row[1]);
}
catch (Exception e) {
e.printStackTrace();
}
finally{
session.flush();
session.close();
}
}
}
I basically redesign the input without using hibernate getNamedQuery, but the java.sql class and it worked!!!
我基本上不用hibernate getNamedQuery重新设计输入，而是使用java。sql类和它起作用了!!!
#3
0
You could get a Connection as described in the accepted answer on How to get jdbc connection from hibernate session? and run stored functions / procedures against it.
您可以获得一个连接，如已接受的关于如何从hibernate会话获取jdbc连接的答案中所描述的那样?并对其运行存储函数/过程。