How to display nested data OneToMany?

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Is the Entity class:
@Id @GeneratedValue(strategy = GenerationType.AUTO) private Long id; private String name; private String method; private String url; @OneToMany private List queryParams;

The problem is that on the page given Json data without QueryParams, such as it is, but emptyE4qouxv.png
@GetMapping("/find/{name}") public List find(@PathVariable String name) { return testService.findByName(name); } @GetMapping("get/{id}") public Optional gets(@PathVariable("id") Long id) { return testService.findById(id); }

Thus, if you run in debug Evaluate Expression, you can see that the data arrives:5D44GVc.png
What did I miss ?
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1 Answer

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For a complete understanding is not enough code to your service class and dao class (if available). In my opinion the problem is in the strategy for loading related entities (@OneToMany).
In Hibernate/JPA there are two types of strategies load related objects at once (FetchType=EAGER) or to do so only when they are accessed (FetchType=LAZY). In fact, in the case where the subject area has no complex structure of relationships between objects, the choice is already made – download pabazi for one object, as it would be if FetchType=EAGER, to put it mildly, unwise. Therefore lazy initialization in the case of collections is the most preferred strategy of initialization of related objects []. The default connection is used OneToMany FetchType=LAZY.
So the problem with loading related objects from the database.

The code in your model, you must add annualy selecting the type of strategy download:
... @OneToMany(fetch = FetchType.LAZY) private List queryParams; ...

And in the class of service or DAO class before
... return testObject; ...
to put the line
In this case, Hibernate will load all related objects.
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