Java 在Hibernate中调用存储过程
我昨晚刚开始学冬眠,它很有趣。我在使用hibernate将存储过程作为sql查询调用时遇到一些问题。我已经附上了源代码和错误,请帮助我。谢谢:) 错误是:::Java 在Hibernate中调用存储过程,java,mysql,hibernate,stored-procedures,orm,Java,Mysql,Hibernate,Stored Procedures,Orm,我昨晚刚开始学冬眠,它很有趣。我在使用hibernate将存储过程作为sql查询调用时遇到一些问题。我已经附上了源代码和错误,请帮助我。谢谢:) 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
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
根据文档,该过程必须返回一个结果集,并应按如下方式调用:
{ ? = call procedureName(<parameters>) }
{?=调用过程重命名()}
因此,请尝试以下方法:
<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>
{?=调用getRecords}
工具书类
- Hibernate核心参考指南
我基本上没有使用hibernate getNamedQuery重新设计输入,但是java.sql类和它工作了 {?=call getRecords()}语法需要一个参数。存储过程不接受任何参数。@ferronrsmith然后删除括号?仍然不工作,很糟糕,我用另一种方式编写了它,无论如何谢谢
{ ? = call procedureName(<parameters>) }
<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>
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();
}
}
}