MyBatis支持?jǐn)?shù)據(jù)庫(kù)的存儲(chǔ)過(guò)程和函數(shù),可以通過(guò)調(diào)用存儲(chǔ)過(guò)程和函數(shù)來(lái)執(zhí)行數(shù)據(jù)庫(kù)操作。以下是在MyBatis中使用存儲(chǔ)過(guò)程和函數(shù)的一般步驟:
<select id="callProcedure" statementType="CALLABLE">
{call procedure_name(#{param1, mode=IN, jdbcType=VARCHAR}, #{param2, mode=OUT, jdbcType=INTEGER})}
</select>
Map<String, Object> paramMap = new HashMap<>();
paramMap.put("param1", "value1");
paramMap.put("param2", null);
MyMapper mapper = sqlSession.getMapper(MyMapper.class);
mapper.callProcedure(paramMap);
// 獲取存儲(chǔ)過(guò)程或函數(shù)的返回結(jié)果
Integer result = (Integer) paramMap.get("param2");
<typeHandlers>
<typeHandler javaType="java.lang.Integer" jdbcType="INTEGER" callback="MyIntegerTypeHandler"/>
</typeHandlers>
public class MyIntegerTypeHandler extends BaseTypeHandler<Integer> {
@Override
public void setNonNullParameter(PreparedStatement ps, int i, Integer parameter, JdbcType jdbcType) throws SQLException {
ps.setInt(i, parameter);
}
@Override
public Integer getNullableResult(ResultSet rs, String columnName) throws SQLException {
return rs.getInt(columnName);
}
@Override
public Integer getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
return rs.getInt(columnIndex);
}
}
通過(guò)以上步驟,可以在MyBatis中支持?jǐn)?shù)據(jù)庫(kù)的存儲(chǔ)過(guò)程和函數(shù),并通過(guò)Mapper接口方法來(lái)調(diào)用和執(zhí)行存儲(chǔ)過(guò)程和函數(shù)。