存储过程的输出参数为游标，PL/SQL中如何调用 Java代码如何调用

--包头
CREATE OR REPLACE PACKAGE MYPACKAGE AS
type empcursor is ref cursor;
PROCEDURE queryEmpList(dno IN NUMBER ,empList OUT empcursor);
END MYPACKAGE;
--包体
CREATE OR REPLACE PACKAGE BODY MYPACKAGE AS
PROCEDURE queryEmpList(dno IN NUMBER , empList OUT empcursor) AS
BEGIN
OPEN empList FOR SELECT * FROM emp WHERE deptno=dno;
END queryEmpList;
END MYPACKAGE;

declare
type type_cur_data is ref cursor return emp%rowtype;
v_cur_data type_cur_data;
v_tab_data emp%rowtype;
begin
MYPACKAGE.queryEmpList(10, v_cur_data);
while (1=1) loop
fetch v_cur_data into v_tab_data;
exit when v_cur_data%notfound;
dbms_output.put_line(v_tab_data.deptno || v_tab_data.ename);
end loop;
end;

/*
CREATE OR REPLACE PACKAGE MYPACKAGE AS
type empcursor is ref cursor;
procedure queryEmpList(dno in number,empList out empcursor);
END MYPACKAGE;
*/

@Test
public void testCursor(){
String sql = "{call MYPACKAGE.queryEmpList(?,?)}";
Connection conn = null;
CallableStatement call = null;
ResultSet rs = null;
try {
conn = JDBCUtils.getConnection();
call = conn.prepareCall(sql);
// 对于 in  参数，赋值
call.setInt(1, 20);
// 对于 out  参数，申明
call.registerOutParameter(2, OracleTypes.CURSOR);
// 执行
call.execute();
// 取出结果
rs = ((OracleCallableStatement)call).getCursor(2);
while(rs.next()){
String name = rs.getString("ename");
double sal = rs.getDouble("sal");
String job = rs.getString("empjob");
System.out.println(name+"\t"+sal+"\t"+job);
}
} catch (Exception e) {
e.printStackTrace();
}finally{
JDBCUtils.release(conn, call, rs);
}
}
}