Spring Data JPA-for循环不保存实体

Question

I am trying to save multiple strings into one column into MySQL DB. Using Spring Data JPA with Hibernate.

I have my PersonserviceImpl as

    @Override
public void createnewPerson(AppPerson appPerson) {

    List<AppPersonproperty> personProperties = personpropertyRepository
            .findByPersonid(appPerson.getAppPersontype().getId());

        for (AppPersonproperty app : personProperties) {
            System.out.println(app.getPersonpropertyname());
            entity.setPersonpropertyname(app.getPersonpropertyname());
        }

    personRepository.save(entity);
}

Only the last value gets save from Person's previous names.

Sysout:

SpiderMan
Spidey

Expected value in the column:

SpiderManSpidey

Actual value in the column:

Spidey

What am I doing wrong here?

Answer 1

Why would JPA append String s in a column when you are replacing them on the Java side?

If you want them appended in the column you need to append them on the Java side as well. Replacing

entity.setPersonpropertyname(app.getPersonpropertyname());

with

entity.setPersonpropertyname(entity.getPersonpropertyname() + app.getPersonpropertyname());

should do the trick.