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) is
- begin
- p_result := 'hello,' || p_user_name;
- end;
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>
<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();
- }
- }
- }
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:
- 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
===============
有返回值时:
<!-- call procedure parameter -->
<parameterMap id="parameterMap" type="java.util.HashMap">
<parameter property="result" jdbcType="CURSOR" javaType="java.sql.ResultSet" mode="OUT" />
<parameter property="TesterCode" jdbcType="VARCHAR" javaType="java.lang.String" mode="IN"/>
<parameter property="Pwd" jdbcType="VARCHAR" javaType="java.lang.String" mode="IN"/>
</parameterMap>
<select id="getTesterByCodeAndPwd" parameterMap="parameterMap" statementType="CALLABLE" resultMap="userResultMap">
{? = call pkg_gettesterbycodeandpwd.proc_gettesterbycodeandpwd(?, ?)}
</select>
</mapper>
本文转载自linux安全网,代返回值自己后加的。