如何在控制器上用JavaSpringJPA进行批量更新

以下是我仅更改一个数据的方法

    @RequestMapping(value = "/updateroomstatus", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)
    public Response<SaveResponse> updateRoomStatus(@RequestBody Request<RoomDetail> request, HttpServletRequest httpServletRequest) throws ParseException, JsonProcessingException {
    Response<SaveResponse> rvalue = new Response<>();
    Status status = new Status();
    String user = request.getSession().getUserId();
    log.info("Headers : " + HttpUtil.getHeadersInfo(httpServletRequest).toString());
    log.info("Incoming request from " + httpServletRequest.getRemoteAddr() + ":" + httpServletRequest.getRemotePort() + "\n"
            + "    Method    : " + httpServletRequest.getMethod() + "\n"
            + "    TLS       : " + httpServletRequest.isSecure() + "\n"
            + "    Path      : " + httpServletRequest.getRequestURI() + "\n"
            + "    Body      : " + mapper.writeValueAsString(request));
    RoomDetail updatedData = request.getPayload();

    Optional<RoomDetail> getData = roomDetailRepository.findById(updatedData.getId());
    if(getData.isPresent()) {
        RoomDetail oldData = getData.get();
        //just one data can update
        oldData.setStatus(updatedData.getStatus());
        oldData.setDescription(updatedData.getDescription());

        roomDetailRepository.saveAndFlush(oldData);
        status.setStatusCode("000");
        status.setStatusDesc("Success");
    } else {
        status.setStatusCode("001");
        status.setStatusDesc("Data Not Found");
    }

    log.info("Resp : " + status.toString());
    rvalue.setStatus(status);
    return rvalue;
}

我想做的是批量更新，这会改变很多数据。看起来是这样的

     [
        {
        "id": 91,
        "description": "Very Good",
        "status": "Occupied"
        },
        {
        "id": 93,
        "description": "Normal",
        "status": "Vacant Dirty"
        },

        {
        "id": 98,
        "description": "Not bad",
        "status": "Occupie Dirty"   
        }
    ]

---

我得到的信息是，批量更新是通过添加数组和循环来完成的。有人能帮忙吗？

我想让你做的是创建一个BulkRoomDetail类，在该类中包括一个名为“rooms”的RoomDetail列表字段。之后，将您的

请求

替换为

请求

。要改变这一点，您必须这样请求：

{
    "rooms": [
        {
        "id": 91,
        "description": "Very Good",
        "status": "Occupied"
        },
        {
        "id": 93,
        "description": "Normal",
        "status": "Vacant Dirty"
        },

        {
        "id": 98,
        "description": "Not bad",
        "status": "Occupie Dirty"   
        }
    ]
}

您的代码将接近于此：

    @RequestMapping(value = "/updateroomstatus", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)
    public Response<SaveResponse> updateRoomStatus(@RequestBody Request<BulkRoomDetail> request,
            HttpServletRequest httpServletRequest) throws ParseException, JsonProcessingException {
        Response<SaveResponse> rvalue = new Response<>();
        Status status = new Status();
        String user = request.getSession().getUserId();
        log.info("Headers : " + HttpUtil.getHeadersInfo(httpServletRequest).toString());
        log.info("Incoming request from " + httpServletRequest.getRemoteAddr() + ":"
                + httpServletRequest.getRemotePort() + "\n" + "    Method    : " + httpServletRequest.getMethod() + "\n"
                + "    TLS       : " + httpServletRequest.isSecure() + "\n" + "    Path      : "
                + httpServletRequest.getRequestURI() + "\n" + "    Body      : " + mapper.writeValueAsString(request));

        BulkRoomDetail bulkOfRooms = request.getPayload();
        List<RoomDetail> rooms = bulkOfRooms.getRooms();

        BulkRoomDetail newUpdatedBulkResponse = new BulkRoomDetail();

        rooms.forEach(room -> newUpdatedBulkResponse.getRooms().add(updateRoom(room)));

        rvalue.setBulk(newUpdatedBulkResponse); // dont know what rvalue is :/
        return rvalue;
    }

    private RoomDetail updateRoom(RoomDetail room) {
        Optional<RoomDetail> getData = roomDetailRepository.findById(room.getId());
        if (getData.isPresent()) {
            RoomDetail oldData = getData.get();
            // just one data can update
            oldData.setStatus(room.getStatus());
            oldData.setDescription(room.getDescription());

            return roomDetailRepository.saveAndFlush(oldData);
        }

        room.setStatus("001");
        room.setDescription("Data Not Found");
        return room;
    }

}

@RequestMapping（value=“/updateroomstatus”，method=RequestMethod.POST，consumes=MediaType.APPLICATION\u JSON\u value）
公共响应更新omstatus（@RequestBody Request，
HttpServletRequest（HttpServletRequest）引发ParseException、JsonProcessingException{
Response rvalue=新响应（）；
状态=新状态（）；
字符串user=request.getSession（）.getUserId（）；
log.info（“Headers:+HttpUtil.getHeadersInfo（httpServletRequest.toString（））；
log.info（“来自“+httpServletRequest.getRemoteAddr（）+”的传入请求：”
+httpServletRequest.getRemotePort（）+“\n”+”方法：“+httpServletRequest.getMethod（）+”\n”
+TLS:“+httpServletRequest.IsSecurity（）+”\n“+”路径：
+httpServletRequest.getRequestURI（）+“\n”+”正文：“+mapper.writeValueAsString（请求））；
BulkRoomDetail bulkOfRooms=request.getPayload（）；
List rooms=bulkOfRooms.getRooms（）；
BulkRoomDetail newUpdatedBulkResponse=新BulkRoomDetail（）；
rooms.forEach（room->newUpdatedBulkResponse.getRooms（）.add（updateeRoom（room））；
rvalue.setBulk（newUpdatedBulkResponse）；//不知道rvalue是什么：/
返回右值；
}
私人房间详细信息更新eRoom（房间详细信息室）{
可选的getData=roomDetailRepository.findById（room.getId（））；
if（getData.isPresent（））{
RoomDetail oldData=getData.get（）；
//只有一个数据可以更新
oldData.setStatus（room.getStatus（））；
setDescription（room.getDescription（））；
return roomDetailRepository.saveAndFlush（旧数据）；
}
setStatus房间（“001”）；
房间设置说明（“未找到数据”）；
返回室；
}
}

---

**还没测试好吗？！？：）

更改可以接受房间详细信息列表的请求主体。迭代它，同样的代码应该可以工作

    @RequestMapping(value = "/updateroomstatus", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)
        public Response<List<SaveResponse>> updateRoomStatus(@RequestBody List<RoomDetail> roomDetails){

   List<SaveResponse> responses = new ArrayList<>();
   for(RoomDetail roomDetail : roomDetails){
        Optional<RoomDetail> getData = roomDetailRepository.findById(roomDetail.getId());
        if(getData.isPresent()) {
            RoomDetail oldData = getData.get();
            //just one data can update
            oldData.setStatus(updatedData.getStatus());
            oldData.setDescription(updatedData.getDescription());

            roomDetailRepository.saveAndFlush(oldData);
            status.setStatusCode("000");
            status.setStatusDesc("Success");
        } else {
            status.setStatusCode("001");
            status.setStatusDesc("Data Not Found");
        }

        log.info("Resp : " + status.toString());
        rvalue.setStatus(status);
        responses.add(rvalue);
     }
return responses;

@RequestMapping（value=“/updateroomstatus”，method=RequestMethod.POST，consumes=MediaType.APPLICATION\u JSON\u value）
公共响应更新omstatus（@RequestBody List roomDetails）{
列表响应=新建ArrayList（）；
用于（RoomDetail RoomDetail:roomDetails）{
可选的getData=roomDetailRepository.findById（roomDetail.getId（））；
if（getData.isPresent（））{
RoomDetail oldData=getData.get（）；
//只有一个数据可以更新
setStatus（updateData.getStatus（））；
setDescription（updateData.getDescription（））；
roomDetailRepository.saveAndFlush（旧数据）；
状态。设置状态代码（“000”）；
状态。设置状态USDESC（“成功”）；
}否则{
状态。设置状态代码（“001”）；
status.setStatusDesc（“未找到数据”）；
}
log.info（“Resp:+status.toString（））；
右值设置状态（状态）；
回答。添加（右值）；
}
回应；

请检查此链接，先生，谢谢您的意见，但sory没有工作：）@RikoIkoJanuar很抱歉：（.但是，如果你想要一个100%的功能代码，你可以复制并通过，我认为你不会找到。上面的代码是一个基于数组和循环的想法。看起来不错…方括号可能是额外的/更少的。请小心

    @RequestMapping(value = "/updateroomstatus", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)
        public Response<List<SaveResponse>> updateRoomStatus(@RequestBody List<RoomDetail> roomDetails){

   List<SaveResponse> responses = new ArrayList<>();
   for(RoomDetail roomDetail : roomDetails){
        Optional<RoomDetail> getData = roomDetailRepository.findById(roomDetail.getId());
        if(getData.isPresent()) {
            RoomDetail oldData = getData.get();
            //just one data can update
            oldData.setStatus(updatedData.getStatus());
            oldData.setDescription(updatedData.getDescription());

            roomDetailRepository.saveAndFlush(oldData);
            status.setStatusCode("000");
            status.setStatusDesc("Success");
        } else {
            status.setStatusCode("001");
            status.setStatusDesc("Data Not Found");
        }

        log.info("Resp : " + status.toString());
        rvalue.setStatus(status);
        responses.add(rvalue);
     }
return responses;