标签:hashmap rop params oracl except logs 成功 insert 允许
转自:https://www.cnblogs.com/eternityz/p/12284732.html
@GetMapping("insertOrder")
public String insertOrder(String params) {
RegCheck.isNull(params);
String[] arr = params.split("@");
//订单号@备注1@备注2@备注3@备注4@备注5@备注6
if (arr.length != 7) {
throw new ServiceException(ResultEnum.LOSTPARAMS);
}
Map<String, Object> map = Maps.newHashMap();
map.put("ticket", arr[0]);
map.put("remark1", arr[1]);
map.put("remark2", arr[2]);
map.put("remark3", arr[3]);
map.put("remark4", arr[4]);
map.put("remark5", arr[5]);
map.put("remark6", arr[6]);
String id = orderService.insertOrder(map);
return id;
}
@Override
public String insertOrder(Map<String, Object> map) {
int num = orderMapper.insertOrder(map);
if (num != 1) {
throw new ServiceException(1000, "插入数据失败!");
}
return map.get("ticket").toString();
}
通过插入操作,插入返回的自增id写入到ticket这个key得value中,为什么写在ticket这个key中,是xml文件中配置的
String insertOrder(Map<String, Object> map);
int insertOrder(Map<String, Object> map);
此时返回的int值,插入成功返回1
<insert id="insertOrder" useGeneratedKeys="true" keyProperty="ticket">
insert into order_order_record
(id,ticket,remark1,remark2,remark3,remark4,remark5,remark6,create_time)
values
(null,#{ticket},#{remark1},#{remark2},#{remark3},#{remark4},#{remark5},#{remark6},now())
</insert>
此时自增主键返回到map中ticket这个key中
Mybatis 配置文件 useGeneratedKeys 参数只针对 insert 语句生效,默认为 false。当设置为 true 时,表示如果插入的表以自增列为主键,则允许 JDBC 支持自动生成主键,并可将自动生成的主键返回。
keyColumn:数据库表中的自增字段名。
keyProperty:数据库自增字段在pojo中的对应属性或者对应的map中的key
@GetMapping("insertOrders")
public int insertOrders(String params) {
RegCheck.isNull(params);
String[] arr = params.split("@");
//订单号@备注1@备注2@备注3@备注4@备注5@备注6
if (arr.length != 7) {
throw new ServiceException(ResultEnum.LOSTPARAMS);
}
Order order = new Order();
order.setTicket(arr[0]);
order.setRemark1(arr[1]);
order.setRemark2(arr[2]);
order.setRemark3(arr[3]);
order.setRemark4(arr[4]);
order.setRemark5(arr[5]);
order.setRemark6(arr[6]);
int id = orderService.insertOrders(order);
return id;
}
@Data
public class Order {
public int id;
public String ticket;
public String remark1;
public String remark2;
public String remark3;
public String remark4;
public String remark5;
public String remark6;
public Date createTime;
}
@Override
public int insertOrders(Order order) {
int num = orderMapper.insertOrders(order);
if (num != 1) {
throw new ServiceException(1002, "插入数据失败!");
}
return order.getId();
}
int insertOrders(Order order);
int insertOrders(Order order);
<insert id="insertOrders" useGeneratedKeys="true" keyProperty="id">
insert into order_order_record
(id,ticket,remark1,remark2,remark3,remark4,remark5,remark6,create_time)
values
(null,#{ticket},#{remark1},#{remark2},#{remark3},#{remark4},#{remark5},#{remark6},now())
</insert>
此时自增主键返回到Order的id字段中,serviceImpl通过获取id可以获得最新插入的id
<insert id="insert">
<selectKey keyProperty="id" resultType="int" order="BEFORE">
<if test="_databaseId == ‘oracle‘">
select seq_users.nextval from dual
</if>
<if test="_databaseId == ‘db2‘">
select nextval for seq_users from sysibm.sysdummy1"
</if>
</selectKey>
insert into users values (#{id}, #{name})
</insert>
order属性可以控制
selectKey在插入操作前或者操作后获取key值,做为字段插入或返回字段。(此段代码获取的序列值id作为字段值插入到users表中)
<selectKey keyProperty="id" resultType="int" order="AFTER">
select LAST_INSERT_ID()
</selectKey>
如果数据库支持自增长主键字段(比如mysql、sql server)设置useGeneratedKeys=”true”和keyProperty,这样就可以插入主键id值
oracle则不支持自增长id,设置useGeneratedKey=”false”,如果设置true则会有报错信息。通过nextval函数,如SEQ_table.Nextval生成id
插入更新一条数据时,可以使用selectKey获取id操作。当做多条数据插入更新时,而selectKey只能使用一次,此时应该使用useGeneratedKeys操作。
原文链接:https://blog.csdn.net/qq_33488642/article/details/82189742
标签:hashmap rop params oracl except logs 成功 insert 允许
原文地址:https://www.cnblogs.com/personsiglewine/p/12890545.html