Mybatis之Oracle增删查改示例（含Date、Clob数据类型操作）
oracle表结构
create table T_USERS
(
ID NUMBER not null,
NAME VARCHAR2(30),
SEX VARCHAR2(3),
BIRS DATE,
MESSAGE CLOB
)
create sequence SEQ_T_USERS_ID
minvalue 1
maxvalue 99999999
start with 1
increment by 1
cache 20;
配置mybatis配置文件UsersMapper.xml
t_users
id,name,sex,birs,message
where 1=1
and id = #{id}
and name like concat(concat('%', '${name}'), '%')
and sex like concat(concat('%', '${sex}'), '%')
and birs = #{birs}
and message = #{message}
select seq_t_users_id.nextval as id from dual
insert into t_users(id,name,sex,birs,message) values(#{id},#{name},#{sex},#{birs},#{message,jdbcType=CLOB})
update t_users set name=#{name},sex=#{sex},birs=#{birs},message=#{message} where id=#{id}
update t_users set
name=#{name},
sex=#{sex},
birs=#{birs},
message=#{message},
where id=#{id}
delete from t_users where id = #{id}
Mapper类接口
package examples.mapper;
import java.util.List;
public interface UsersMapper {
public void add(T t);
public void update(T t);
public void updateBySelective(T t);
public void delete(Object id);
public T queryById(Object id);
public List queryBySelective(T t);
public int queryByCount(T t);
public List queryByList(T t);
}
类型转换工具类
package examples.service;
import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import oracle.sql.CLOB;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.TypeHandler;
public class OracleClobTypeHandler implements TypeHandlerSpring配置文件
oracle.jdbc.driver.OracleDriver jdbc:oracle:thin:@127.0.0.1:1521:pms pms pms
classpath:examples/mybatis/oracle/UsersMapper.xml
测试类
package examples.service;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import examples.bean.Users;
import examples.mapper.UsersMapper;
public class TestUsersService {
@SuppressWarnings("unchecked")
public static void main(String[] args) throws ParseException {
ApplicationContext ac =
new ClassPathXmlApplicationContext("classpath:/examples/service/spring.xml");
UsersMapper dao = (UsersMapper)ac.getBean("dao");
//删除表中所有信息
Users nullBean = new Users();
List delList = dao.queryByList(nullBean);
if(delList != null) {
for(Users user : delList) {
dao.delete(user.getId());
}
}
//新增
Users bean = new Users();
bean.setName("ding");
bean.setSex("男");
bean.setBirs(new SimpleDateFormat("yyyy-MM-dd").parse("1985-01-01"));
bean.setMessage("This is Clob!");
dao.add(bean);
List list = dao.queryByList(nullBean);
if(list != null) {
for(Users user : list) {
System.out.println(user);
}
}
//查询并更新
bean = new Users();
bean.setName("ding");
List queList = dao.queryByList(bean);
if(queList != null) {
for(Users user : list) {
user.setSex("女");
dao.updateBySelective(user);
}
}
list = dao.queryByList(nullBean);
if(list != null) {
for(Users user : list) {
System.out.println(user);
}
}
//查询并更新
bean = new Users();
bean.setName("ding");
List queList2 = dao.queryByList(bean);
if(queList != null) {
for(Users user : queList2) {
user.setSex("男");
user.setMessage("");
dao.update(user);
}
}
list = dao.queryByList(nullBean);
if(list != null) {
for(Users user : list) {
System.out.println(user);
}
}
int num = dao.queryByCount(nullBean);
System.out.println("num=" + num);
}
}