java调用存储过程(有返回值)

SQL> desc emp;
 名称                                                                                                              是否为空? 类型
 ---------------------------------------------------------------------------------------------------
 EMPNO                                                                                                             NOT NULL NUMBER(4)
 ENAME                                                                                                                      VARCHAR2(10)
 JOB                                                                                                                        VARCHAR2(9)
 MGR                                                                                                                        NUMBER(4)
 HIREDATE                                                                                                                   DATE
 SAL                                                                                                                        NUMBER(7,2)
 COMM                                                                                                                       NUMBER(7,2)
 DEPTNO                                                                                                                     NUMBER(2)

SQL> create or replace procedure pro_printEname(v_in_empno in number,v_out_ename out varchar2)
  2  as
  3  begin
  4  select ename into v_out_ename from emp where empno=v_in_empno;
  5  end pro_printEname;
  6  /

过程已创建。

import java.sql.*;
public class printEname {
	public static void main(String[] args) {
		Connection conn=null;
		CallableStatement cstmt=null;
		try{
			//注册驱动
			Class.forName("oracle.jdbc.driver.OracleDriver");
			//获取连接
			conn=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORA","scott","tiger");
			//调用存储过程
			cstmt=conn.prepareCall("{call pro_printEname(?,?)}");
			//对?赋值
			cstmt.setInt(1, 7369);
			cstmt.registerOutParameter(2, oracle.jdbc.OracleTypes.VARCHAR);
			//执行
			cstmt.execute();
			//获取结果
			String name=cstmt.getString(2);
			System.out.println(name);
		}
		catch(Exception e){
			e.printStackTrace();
		}
		finally{
			try{
				cstmt.close();
				conn.close();
			}
			catch(Exception e1){
				e1.printStackTrace();
			}
		}

	}
}