详解Oracle在out参数中访问光标

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CREATE OR REPLACE 
PACKAGE MYPACKAGE AS 
 type empcursor isref cursor;
 procedure queryEmplist(dno in number,emplist out empcursor);
END MYPACKAGE;

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CREATE OR REPLACE
PACKAGE BODY MYPACKAGE AS
 procedure queryEmplist(dno in number,emplist out empcursor) AS
BEGIN
--打开光标
  open emplist forselect*from emp where deptno = dno;
END queryEmplist;
END MYPACKAGE;

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package demo.oracle;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.ResultSet;
import oracle.jdbc.OracleCallableStatement;
import oracle.jdbc.OracleTypes;
import org.junit.Test;
import demo.utils.JDBCUtils;
publicclassTestCursor{
/*
 CREATE OR REPLACE PACKAGE MYPACKAGE AS 
 type empcursor is ref cursor;
 procedure queryEmplist(dno in number,emplist out empcursor);
END MYPACKAGE;
 * */
@Test
publicvoid testCursor(){
String sql="{call MYPACKAGE.queryEmplist(?,?)}";
Connection conn =null;
CallableStatement call =null;
ResultSet rs =null;
try{
//获取数据库的连接
  conn =JDBCUtils.getConnection();
//创建statement
  call = conn.prepareCall(sql);
//对于in参数，赋值
  call.setInt(1,10);
//对于out参数，申明
  call.registerOutParameter(2,OracleTypes.CURSOR);
//执行调用
  call.execute();
//取出该部门中所有员工的信息
  rs =((OracleCallableStatement)call).getCursor(2);
while(rs.next()){
//取出该员工的员工号，姓名，薪水和职位
int empno = rs.getInt("empno");
String name =rs.getString("ename");
double salay = rs.getDouble("sal");
String job = rs.getString("empjob");
System.out.println(empno+"\t"+name+"\t"+salay+"\t"+job);
}
}catch(Exception e){
  e.printStackTrace();
}finally{
JDBCUtils.release(conn, call, rs);
}
}
}

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7782  CLARK  6450.0  MANAGER
7839  KING  10100.0  PRESIDENT
7934  MILLER  3300.0  CLERK