一、Mybatis调用存储过程

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
statementType里的CALLABLE是标注此sql为存储过程。
parameterType是标注要传的参数，看了一些资料不写parameterType的话默认传map。还是加上比较清晰
<select id="proHello" parameterType="java.util.map" statementType="CALLABLE">
{call pro_hello(#{uname,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 param = new HashMap();
                 param.put("uname", "zhangsan");
                 param.put("result", "");
                 String returnValue = (String) session.selectOne("User.proHello", param);
                 System.out.println("message=" + param.get("uname"));
                 System.out.println("result=" + param.get("result"));
                 System.out.println("returnValue=" + returnValue);
           } catch (Exception e) {
                e.printStackTrace();
           } finally {
              session.close();
          }
       }
}

二、Mybatis调用function

function带有返回值，假设一个oracle函数增加学生后返回成功与否的字符串
<select id="isMember" statementType="CALLABLE" parameterType="cn.StudentDto"> 
{#{result,mode=OUT,jdbvType=VARCHAR} = call
addStudent(#{num,mode=IN,jdbcType=DECIMAL},#{name,mode=IN,jdbcType=VARCHAR},#{rollInYear,mode=IN,jdbcType=Date},#{age,mode=OUT,jdbcType=INTEGER})} 
</select>

StudentDTO除了上述出现的学生信息字段外还需要String类型的result字段。

原帖地址：
http://chenjc-it.iteye.com/blog/1443432
http://shen84121062.iteye.com/blog/1213857