当我根据planId查询Plan的某一条数据时（mysql数据库），如果此时传参数bindCode去修改CustomerId时，数据库里面这条数据的这个字段也会同时修改，见下面的sql查询结果
@ApiOperation("error")
@PostMapping("error")
@Transactional(rollbackFor = Exception.class)
public Object error(@RequestBody JSONObject jsonObject) {
Optional one = myPlanRepository.findById(jsonObject.getLong("planId"));
one.ifPresent(v->{
v.setCustomerId(jsonObject.getString("bindCode"));
});
return one.get();
}
Repository层
我的myPlanRepository继承了CrudRepository
测试原始的数据库数据如下
当我传如下参数的时候
此时的数据库该字段的数据变了！！！
在无事物的情况下 controller层@ApiOperation("error")
@PostMapping("error")
public Object error(@RequestBody JSONObject jsonObject) {
Optional one = myPlanRepository.findById(jsonObject.getLong("planId"));
one.ifPresent(v->{
v.setCustomerId(jsonObject.getString("bindCode"));
});
return one.get();
}
测试
尝试去修改CustomerId的值，改为333
此时数据库该字段并没有变化！！！是不是很懵逼！！！
save方法和查询方法同时存在时 controller层方法如下
@ApiOperation("error")
@PostMapping("error")
public Object error(@RequestBody JSONObject jsonObject) {
Optional one = myPlanRepository.findById(jsonObject.getLong("planId"));
myPlanRepository.save(one.get());
return one.get();
}
save调用的是CrudRepository下的save
测试参数如下
我的idea控制台打印的sql日志
-Hibernate:
select
plan0_.id as id1_35_0_,
plan0_.create_date_time as create_d2_35_0_,
plan0_.del as del3_35_0_,
plan0_.modify_date_time as modify_d4_35_0_,
plan0_.cover_path as cover_pa5_35_0_,
plan0_.customer_id as customer6_35_0_,
plan0_.default_policy_year as default_7_35_0_,
plan0_.emp_name as emp_name8_35_0_,
plan0_.emp_phone as emp_phon9_35_0_,
plan0_.empno as empno10_35_0_,
plan0_.get_way as get_way11_35_0_,
plan0_.has_bonus_level as has_bon12_35_0_,
plan0_.has_get_setting as has_get13_35_0_,
plan0_.has_share_setting as has_sha14_35_0_,
plan0_.holder_age as holder_15_35_0_,
plan0_.holder_birthdate as holder_16_35_0_,
plan0_.holder_insured_relation as holder_17_35_0_,
plan0_.holder_name as holder_18_35_0_,
plan0_.holder_sex as holder_19_35_0_,
plan0_.iflytek_url as iflytek20_35_0_,
plan0_.img_case as img_cas21_35_0_,
plan0_.img_url as img_url22_35_0_,
plan0_.insure_qr_code as insure_23_35_0_,
plan0_.insured_age as insured24_35_0_,
plan0_.insured_birthdate as insured25_35_0_,
plan0_.insured_name as insured26_35_0_,
plan0_.insured_sex as insured27_35_0_,
plan0_.plan_code as plan_co28_35_0_,
plan0_.plan_status as plan_st29_35_0_,
plan0_.prod_code as prod_co30_35_0_,
plan0_.prod_name as prod_na31_35_0_,
plan0_.prod_num as prod_nu32_35_0_,
plan0_.prod_year_num as prod_ye33_35_0_,
plan0_.product_id as product34_35_0_,
plan0_.share_id as share_i35_35_0_,
plan0_.total_amount as total_a36_35_0_,
plan0_.total_premium as total_p37_35_0_
from
plan plan0_
where
plan0_.id=?
and (
plan0_.del = 0
)
你会发现只执行了查询的方法，并没有执行更新的方法，猜测可能的原因是我们没有修改查询出Plan的属性值，由此我们进行如下实验，将查询出plan的customerId的值修改了
@ApiOperation("error")
@PostMapping("error")
public Object error(@RequestBody JSONObject jsonObject) {
Optional one = myPlanRepository.findById(jsonObject.getLong("planId"));
one.ifPresent(v->{
v.setCustomerId(jsonObject.getString("bindCode"));
});
myPlanRepository.save(one.get());
return one.get();
}
继续测试，参数如下
查看idea控制台日志
-Hibernate:
select
plan0_.id as id1_35_0_,
plan0_.create_date_time as create_d2_35_0_,
plan0_.del as del3_35_0_,
plan0_.modify_date_time as modify_d4_35_0_,
plan0_.cover_path as cover_pa5_35_0_,
plan0_.customer_id as customer6_35_0_,
plan0_.default_policy_year as default_7_35_0_,
plan0_.emp_name as emp_name8_35_0_,
plan0_.emp_phone as emp_phon9_35_0_,
plan0_.empno as empno10_35_0_,
plan0_.get_way as get_way11_35_0_,
plan0_.has_bonus_level as has_bon12_35_0_,
plan0_.has_get_setting as has_get13_35_0_,
plan0_.has_share_setting as has_sha14_35_0_,
plan0_.holder_age as holder_15_35_0_,
plan0_.holder_birthdate as holder_16_35_0_,
plan0_.holder_insured_relation as holder_17_35_0_,
plan0_.holder_name as holder_18_35_0_,
plan0_.holder_sex as holder_19_35_0_,
plan0_.iflytek_url as iflytek20_35_0_,
plan0_.img_case as img_cas21_35_0_,
plan0_.img_url as img_url22_35_0_,
plan0_.insure_qr_code as insure_23_35_0_,
plan0_.insured_age as insured24_35_0_,
plan0_.insured_birthdate as insured25_35_0_,
plan0_.insured_name as insured26_35_0_,
plan0_.insured_sex as insured27_35_0_,
plan0_.plan_code as plan_co28_35_0_,
plan0_.plan_status as plan_st29_35_0_,
plan0_.prod_code as prod_co30_35_0_,
plan0_.prod_name as prod_na31_35_0_,
plan0_.prod_num as prod_nu32_35_0_,
plan0_.prod_year_num as prod_ye33_35_0_,
plan0_.product_id as product34_35_0_,
plan0_.share_id as share_i35_35_0_,
plan0_.total_amount as total_a36_35_0_,
plan0_.total_premium as total_p37_35_0_
from
plan plan0_
where
plan0_.id=?
and (
plan0_.del = 0
)
Hibernate:
update
plan
set
create_date_time=?,
del=?,
modify_date_time=?,
cover_path=?,
customer_id=?,
default_policy_year=?,
emp_name=?,
emp_phone=?,
empno=?,
get_way=?,
has_bonus_level=?,
has_get_setting=?,
has_share_setting=?,
holder_age=?,
holder_birthdate=?,
holder_insured_relation=?,
holder_name=?,
holder_sex=?,
iflytek_url=?,
img_case=?,
img_url=?,
insure_qr_code=?,
insured_age=?,
insured_birthdate=?,
insured_name=?,
insured_sex=?,
plan_code=?,
plan_status=?,
prod_code=?,
prod_name=?,
prod_num=?,
prod_year_num=?,
product_id=?,
share_id=?,
total_amount=?,
total_premium=?
where
id=?
会发现此时执行了更新方法，由此可以得出结论，Hibernate对查询出的实体类进行监控，如果实体类变更了属性值，则会执行相应的更新，如果没有变化，则不会执行相应的更新
备注：经过测试save方法和查询方法同时存在的情况下，有事物无事物的结果都是一样的
by：三分钟热度
