捕获唯一约束异常(SQLIntegrityConstraintViolationException),在catch中拿到sqlState做判断更新

项目架构:springboot + mybatis-Plus

代码示例:

private static final String SQLSTATE_23000 = "23000";

Person person = new Person();
person.setId("aaa");
person.setName("bbb");
try {
            personMapper.insert(person);
        } catch (Exception e) {
            Throwable cause = e.getCause();
            if (cause instanceof SQLIntegrityConstraintViolationException) {
                String sqlState = ((SQLIntegrityConstraintViolationException) cause).getSQLState();
                log.info("Person表中已存在主键为:【{}】的数据,sqlState:{}", person .getId(), sqlState);
                if (SQLSTATE_23000.equals(sqlState)) {
                    try {
                        personMapper.updateById(person);
                    } catch (Exception e1) {
                        log.error("更新Person表 失败,原因:", e1);
                    }
                }
            } else {
                log.error("保存Person信息 失败,原因:", e);
            }
        }

说明:mybatis-Plus内置的sql方法,捕获异常时只能捕获Exception,先判断Exception的类型,才能拿到sqlState的值,根据sqlState可以做其他处理。

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