Java 调用有输入和输出的存储过程

--有输入和输出的存储过程
SQL> create or replace procedure sp_pro8(
       spNo in varchar2,
       spName out varchar2) is
begin
  select sname into spName from student where sid= spNo;
end;

 1 package oracle;
 2 
 3 import java.sql.CallableStatement;
 4 import java.sql.Connection;
 5 import java.sql.DriverManager;
 6 import java.sql.SQLException;
 7 
 8 import oracle.jdbc.OracleTypes;
 9 
10 
11 public class Test02 {
12 
13     public static void main(String[] args) {
14         // TODO Auto-generated method stub
15                 Connection conn = null;
16                 CallableStatement cs = null;
17                 try {
18                     //1.加载驱动
19                     Class.forName("oracle.jdbc.driver.OracleDriver");
20                     
21                     //2.连接
22                     String url = "jdbc:oracle:thin:@127.0.0.1:1521:ORACLE12C";
23                     String userName = "sys as SYSDBA";
24                     String password = "fairy6280";
25                     conn = DriverManager.getConnection(url,userName,password);
26                     
27                     //3.创建CallableStatement
28                     String procedure = "{call sp_pro8(?,?)}";
29                     cs = conn.prepareCall(procedure);
30                     
31                     //赋值
32                     cs.setInt(1, 1010);
33                     cs.registerOutParameter(2, OracleTypes.VARCHAR);
34                     cs.execute();
35                     
36                     //取出返回值,要注意?的顺序
37                     String name = cs.getString(2);
38                     System.out.println("学号1010的学生的名字："+name);
39                     
40                 } catch (Exception e) {
41                     // TODO Auto-generated catch block
42                     e.printStackTrace();
43                 }
44                 finally{
45                     //关闭
46                     try {
47                         cs.close();
48                         conn.close();
49                     } catch (SQLException e) {
50                         // TODO Auto-generated catch block
51                         e.printStackTrace();
52                     }
53                 }
54     }
55 
56 }