fix queryCusor() fails in streaming mode of MySQL Connector/J (fetchSize=Integer.MIN_VALUE) #1654

Author: youyou.dyy

src/main/java/org/apache/ibatis/executor/BatchExecutor.java

@@ -102,9 +102,10 @@ protected <E> Cursor<E> doQueryCursor(MappedStatement ms, Object parameter, RowB
     StatementHandler handler = configuration.newStatementHandler(wrapper, ms, parameter, rowBounds, null, boundSql);
     Connection connection = getConnection(ms.getStatementLog());
     Statement stmt = handler.prepare(connection, transaction.getTimeout());
-    stmt.closeOnCompletion();
     handler.parameterize(stmt);
-    return handler.queryCursor(stmt);
+    Cursor<E> cursor = handler.queryCursor(stmt);
+    stmt.closeOnCompletion();
+    return cursor;
   }
 
   @Override

src/main/java/org/apache/ibatis/executor/SimpleExecutor.java

@@ -71,8 +71,9 @@ protected <E> Cursor<E> doQueryCursor(MappedStatement ms, Object parameter, RowB
     Configuration configuration = ms.getConfiguration();
     StatementHandler handler = configuration.newStatementHandler(wrapper, ms, parameter, rowBounds, null, boundSql);
     Statement stmt = prepareStatement(handler, ms.getStatementLog());
+    Cursor<E> cursor = handler.queryCursor(stmt);
     stmt.closeOnCompletion();
-    return handler.queryCursor(stmt);
+    return cursor;
   }
 
   @Override