Mybatis使用篇之七：存储过程调用
http://chenjc-it.iteye.com/blog/1443432

如何使用Mybaits调用数据库中的存储过程，下面以Oracle数据库的为例：

1．在数据库中创建以下的存储过程：

create or replace procedure pro_hello(p_user_name in varchar2,p_result out varchar2) isbegin  p_result := 'hello,' || p_user_name;end;

2．编写SQL映射文件mapper.xml：

<select id="proHello" statementType="CALLABLE"><![CDATA[    {call pro_hello (#{p_user_name,mode=IN,jdbcType=VARCHAR},#{result,mode=OUT,jdbcType=VARCHAR})}]]></select>

3．编写JAVA代码调用存储过程

public class ProcedureTest {                 public static void main(String[] args) throws IOException {            String resource = "mybatis.cfg.xml";            Reader reader = Resources.getResourceAsReader(resource);            SqlSessionFactory ssf = new SqlSessionFactoryBuilder().build(reader);                   SqlSession session = ssf.openSession();                  try {                 Map<String, String> param = new HashMap<String, String>();                 param.put("p_user_name", "zhangsan");                 String returnValue = (String) session.selectOne("User.proHello", param);                 System.out.println("message=" + param.get("p_user_name"));                 System.out.println("result=" + param.get("result"));                 System.out.println("returnValue=" + returnValue);            } catch (Exception e) {                e.printStackTrace();           } finally {              session.close();          }       }}

4．执行Java代码，控制台输出结果如下：
引用2012-03-07 20:36:32,406 DEBUG [java.sql.PreparedStatement] -==> Executing: {call pro_hello(?,?)}
2012-03-07 20:36:32,406 DEBUG [java.sql.PreparedStatement] -==> Parameters: zhangsan(String)
message=zhangsan