英文:
Adding fields to response json in spring boot get method
问题
我有一个从仓库向REST控制器提供数据的服务：
@Servicepublic class TaskServiceImpl implements TaskService {@Autowiredprivate TaskRepository taskRepository;@Overridepublic List<Task> getAllTasks() {return taskRepository.findAll();}}
还有一个REST控制器：
@RestController@RequestMapping("/tasks")public class TaskController {@Autowiredprivate TaskService taskService;@GetMappingpublic List<Task> getAllTasks() {return taskService.getAllTasks();}}
我的任务是不仅返回所有任务，还要返回两个字段 - 待办任务数和已完成任务数。我知道如何从数据库中获取这个计数。但是如何将这些字段添加到响应JSON中呢？响应JSON必须如下所示：
{"tasks": [{"createTime": null,"updateTime": null,"id": "3fa85f64-5717-4562-b3fc-2c963f66afa6","title": "待办任务","description": "blabla","priority": "HIGH","done": false},{"createTime": null,"updateTime": null,"id": "3fa85f64-5717-4562-b3fc-2c963f66afa6","title": "已完成任务","description": "blabla","priority": "HIGH","done": true}],"todoCount": 1,"doneCount": 1}
英文:
I have the service that gives data from repository to rest controller:
@Servicepublic class TaskServiceImpl implements TaskService {@Autowiredprivate TaskRepository taskRepository;@Overridepublic List<Task> getAllTasks() {return taskRepository.findAll();}}
And also rest controller:
@RestController
@RequestMapping("/tasks")
public class TaskController {
@Autowired
private TaskService taskService;
@GetMappingpublic List<Task> getAllTasks() {return taskService.getAllTasks();}}
My task is to return not only all the tasks but two fields two - todo tasks count and ready tasks count. I know how find this count from db. But what is the proper way to add this fields to response json? Response json must look like:
{[{"createTime": null,"updateTime": null,"id": "3fa85f64-5717-4562-b3fc-2c963f66afa6","title": "todo-task","description": "blabla","priority": "HIGH","done": false,},{"createTime": null,"updateTime": null,"id": "3fa85f64-5717-4562-b3fc-2c963f66afa6","title": "done-task","description": "blabla","priority": "HIGH","done": true,}],todoCount: 1,doneCount: 1}
答案1
得分: 0
你可以通过创建一个新的模型，由Controller返回，并设置你的todoCount和doneCount值：
@GetMappingpublic TasksModel getAllTasks() {// 获取 todoCount 和 doneCount 值TasksModel tasksModel = new TasksModel();tasksModel.setTaskModelList(taskService.getAllTasks());tasksModel.setTodoCount(todoCount);tasksModel.setDoneCount(doneCount);return tasksModel;}
而TasksModel的定义如下：
class TasksModel {List<Task> taskModelList;int todoCount;int doneCount;// getter// setter}
英文:
you can do that by creating new model to be returned by the Controller and set your todoCount and doneCount values:
@GetMappingpublic TasksModel getAllTasks() {// get todoCount and doneCount valuesTasksModel tasksModel = new TasksModel();tasksModel.setTaskModelList(taskService.getAllTasks())tasksModel.setTodoCount(todoCount);tasksModel.setDoneCount(doneCount);return taskModel;}
and TasksModel is :
class TasksModel {List<Task> taskModelList;int todoCount;int doneCount;//getter//setter}
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