public LinkedHashMap<String, Object> getDistinctData(senseDataDto senseDataDto) { LinkedHashMap<String, Object> distinctData = new LinkedHashMap<>(); distinctData.put("pin35", senseDataMapper.getDistinctPin35(senseDataDto)); distinctData.put("pin36", senseDataMapper.getDistinctPin36(senseDataDto)); distinctData.put("pin29", senseDataMapper.getDistinctPin29(senseDataDto)); distinctData.put("pin30", senseDataMapper.getDistinctPin30(senseDataDto)); distinctData.put("pin31", senseDataMapper.getDistinctPin31(senseDataDto)); distinctData.put("pin1", senseDataMapper.getDistinctPin1(senseDataDto)); distinctData.put("pin2", senseDataMapper.getDistinctPin2(senseDataDto)); distinctData.put("pin3", senseDataMapper.getDistinctPin3(senseDataDto)); distinctData.put("pin4", senseDataMapper.getDistinctPin4(senseDataDto)); return distinctData; },优化这个方法使其异步加载,并在Controller层返回distinctData数据给前端,使得加载的速度快一点,请写出详细完整的代码,包括Controller层
时间: 2024-04-18 18:34:03 浏览: 26
为了使getDistinctData方法异步加载并在Controller层返回数据给前端,我们可以使用CompletableFuture来实现异步操作。下面是优化后的代码示例:
首先,在getDistinctData方法中,我们将每个distinctData的获取过程都包装在CompletableFuture中,并使用CompletableFuture.supplyAsync方法来异步执行这些操作。然后,我们使用CompletableFuture.allOf方法来等待所有异步操作完成。最后,我们使用CompletableFuture.join方法来获取最终的distinctData结果。
```java
public CompletableFuture<LinkedHashMap<String, Object>> getDistinctDataAsync(senseDataDto senseDataDto) {
CompletableFuture<Object> pin35Future = CompletableFuture.supplyAsync(() -> senseDataMapper.getDistinctPin35(senseDataDto));
CompletableFuture<Object> pin36Future = CompletableFuture.supplyAsync(() -> senseDataMapper.getDistinctPin36(senseDataDto));
CompletableFuture<Object> pin29Future = CompletableFuture.supplyAsync(() -> senseDataMapper.getDistinctPin29(senseDataDto));
CompletableFuture<Object> pin30Future = CompletableFuture.supplyAsync(() -> senseDataMapper.getDistinctPin30(senseDataDto));
CompletableFuture<Object> pin31Future = CompletableFuture.supplyAsync(() -> senseDataMapper.getDistinctPin31(senseDataDto));
CompletableFuture<Object> pin1Future = CompletableFuture.supplyAsync(() -> senseDataMapper.getDistinctPin1(senseDataDto));
CompletableFuture<Object> pin2Future = CompletableFuture.supplyAsync(() -> senseDataMapper.getDistinctPin2(senseDataDto));
CompletableFuture<Object> pin3Future = CompletableFuture.supplyAsync(() -> senseDataMapper.getDistinctPin3(senseDataDto));
CompletableFuture<Object> pin4Future = CompletableFuture.supplyAsync(() -> senseDataMapper.getDistinctPin4(senseDataDto));
return CompletableFuture.allOf(pin35Future, pin36Future, pin29Future, pin30Future, pin31Future, pin1Future, pin2Future, pin3Future, pin4Future)
.thenApplyAsync(v -> {
LinkedHashMap<String, Object> distinctData = new LinkedHashMap<>();
distinctData.put("pin35", pin35Future.join());
distinctData.put("pin36", pin36Future.join());
distinctData.put("pin29", pin29Future.join());
distinctData.put("pin30", pin30Future.join());
distinctData.put("pin31", pin31Future.join());
distinctData.put("pin1", pin1Future.join());
distinctData.put("pin2", pin2Future.join());
distinctData.put("pin3", pin3Future.join());
distinctData.put("pin4", pin4Future.join());
return distinctData;
});
}
```
接下来,在Controller层中,我们可以调用getDistinctDataAsync方法,并使用CompletableFuture的异步方法来获取异步结果。最后,我们可以使用CompletableFuture的join方法来获取最终的distinctData结果,并将其返回给前端。
```java
@RestController
public class YourController {
private final YourService yourService;
public YourController(YourService yourService) {
this.yourService = yourService;
}
@GetMapping("/distinct-data")
public CompletableFuture<LinkedHashMap<String, Object>> getDistinctData() {
senseDataDto senseDataDto = ...; // 初始化senseDataDto对象
return yourService.getDistinctDataAsync(senseDataDto);
}
}
```
这样,getDistinctData方法就会以异步方式加载数据,并在Controller层返回给前端,以提高加载速度。
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