[英]Spring Boot Rest controller: adding text in the return type
I have a SpringBoot app.我有一个 SpringBoot 应用程序。 with a RestController
使用 RestController
@RestController
@RequestMapping("/api/aggreg")
public class AggregRestController {
@GetMapping("/list")
public List<AggregCalcTrainsXCompany> aggregList ()
throws IOException, URISyntaxException, DataAccessException, SQLException {
return aggregService.findAll();
}
}
Since I want to use this controller in a DataTable ajax call, I would need to add this piece of code in the beginning:因为我想在 DataTable ajax 调用中使用这个控制器,所以我需要在开头添加这段代码:
{
"data":
and }
at the end to make it work, but I don't know if this is possible和
}
最后让它工作,但我不知道这是否可能
As I commented, you simply need to return a Map
instead of a List<AggregCalcTrainsXCompany>
:正如我所评论的,您只需要返回一个
Map
而不是List<AggregCalcTrainsXCompany>
:
@RestController
@RequestMapping("/api/aggreg")
public class AggregRestController {
@GetMapping("/list")
public Map<String, List<AggregCalcTrainsXCompany>> aggregList ()
throws IOException, URISyntaxException, DataAccessException, SQLException {
Map<String, List<AggregCalcTrainsXCompany>> m = new HashMap<>();
m.put("data", aggregService.findAll());
return m;
}
}
The map will be serialized as地图将被序列化为
{
"data" : <here the result from your aggregtation>
}
You have two options:您有两个选择:
Wrap your List into class with data
field and return it:将您的 List 包装到带有
data
字段的类中并返回它:
class Result { List<AggregCalcTrainsXCompany> data; }
(as comment suggested) Return Map<String, List<AggregCalcTrainsXCompany>>
(如建议的评论)返回
Map<String, List<AggregCalcTrainsXCompany>>
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