1.业务背景
业务场景中,一个会话中存在多个场景,即一个session_id对应多个scene_id和scene_name
如果你写成如下的聚合模型类
public class SceneVO {
private String sessionId;
private String sceneId;
private String sceneName;
// 省略对应的getter和setter方法
}
返回的List
{
"data":[
{
"sessionId": "jksadhjksd",
"sceneId":"NDJWKSDSJKDKED",
"sceneName":"场景1"
},
{
"sessionId": "jksadhjksd",
"sceneId":"KLJSDJKLSDFALK",
"sceneName":"场景2"
},
{
"sessionId": "jksadhjksd",
"sceneId":"KERFJKOVDJKDSS",
"sceneName":"场景3"
}
}
}
每个对象里面都带上了重复的一个sessionId数据,我想提出来该怎么办?
我想改为如下形式,sessionId提出到外层,更能体现出一个sessionId对应多个sceneId和sceneName的含义,这样也便于前端取数据,不然每个对象都要增加一个sessionId属性,太麻烦。
{
"data": {
"sessionId": "jksadhjksd",
"sceneList": [
{
"sceneId":"NDJWKSDSJKDKED",
"sceneName":"场景1"
},
{
"sceneId":"KLJSDJKLSDFALK",
"sceneName":"场景2"
},
{
"sceneId":"KERFJKOVDJKDSS",
"sceneName":"场景3"
}
}
}
}
2.实体类
方法如下,首先创建两个实体类。
public class SceneVO {
private String sessionId;
private List sceneList;
// 省略对应的getter和setter方法
}
public class SubSceneVO {
private String sceneId;
private String sceneName;
// 省略对应的getter和setter方法
}
3.自定义Mapper和xml文件
public interface BusinessScenesCustomMapper {
SceneVO selectBySessionId(String sessionId);
}
<?xml version="1.0" encoding="UTF-8"?>
4.Service层
public interface SceneService {
/**
* 获取场景信息
*/
SceneVO getScenesInfo(String sessionId);
}
@Service
public class SceneServiceImpl {
@Resource
private BusinessScenesCustomMapper businessScenesCustomMapper;
......
public SceneVO getScenesInfo(String sessionId) {
return businessScenesCustomMapper.selectBySessionId(sessionId);
}
}
5.Controller层
......
@Resource
private SceneService sceneService;
@GetMapping("/getScenesInfo")
public ResModel getScenesInfo(String sessionId) {
SceneVO sceneVO = sceneService.getScenesInfo(sessionId);
return ResModel.ok(sceneVO);
}
页面更新:2024-03-30
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