Mybatis技术（五）Mybatis调用存储过程

gaohan

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) is   
begin   
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：
2013-05-11 0:36:32,406 DEBUG [java.sql.PreparedStatement] -==>  Executing: {call pro_hello(?,?)}   
2013-05-11 0:36:32,406 DEBUG [java.sql.PreparedStatement] -==> Parameters: zhangsan(String)   
message=zhangsan