为什么当我通过post方法发送两个参数时会出错？

Question

我使用Java11和Spring。我试图通过post将两个对象发送到控制器，但我得到了一个错误。

这里是控制器：

@PostMapping("/new_info/buildingData")
public Map<String, List<Buildings>> getBuildingData(
        @RequestBody Boolean isIncluded,
        @RequestBody BuildingData buildingData
        ) {
    Map<String, List<Buildings>> results = new HashMap<>();
    results.put("results", buildingService.findBuildingDataByInfoId(BuildingData, isGood));
    return results;
}

{
  "isIncluded": true,
  "buildingData": {
    "id": "1232165",
    "name": "Tir44",
    "description": "West side road 45",
  }
}

 c.p.s.utility.ExceptionHandlerAdvice : <=== Exception: JSON parse error: Cannot deserialize instance of `java.lang.Boolean` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.lang.Boolean` out of START_OBJECT token

你知道为什么我会得到这个错误以及如何修复它吗？

Answer 1

您可以在requestBody中为布尔参数isinclude和buildingData使用path变量，如下所示，这样您不需要两个requestBody，只在requestBody中传递buildingData就足够了

@RequestMapping(value = "/new_info/buildingData/{isIncluded}", method = RequestMethod.POST)
    public Map<String, List<Buildings>> getBuildingData(@RequestBody BuildingData buildingData, @PathVariable boolean isIncluded) {
...
}