opencpu不一致的json序列化答案

【问题标题】：opencpu inconsistent json serializationopencpu不一致的json序列化
【发布时间】：2016-05-04 09:18:38
【问题描述】：

嗨，我想使用 robfilter 和 opencpu。由于默认的 robfilter 响应不是 json 可序列化的，因此我使用此函数创建了自己的包：

detectOutliers <- function(json, windowWidth) {
    x <- json
    robfil <- robust.filter(x[[2]], width=windowWidth, outlier="T", online=FALSE)
    outlierDf <- data.frame(period=x[[1]], totalAmount=x[[2]], isOutlier=robfil$ol)
    return(outlierDf)
}

在本地测试时

args <- fromJSON('{"json":[{"Period":1393632000,"x":453.2003},{"Period":1396310400,"x":742.9013},{"Period":1398902400,"x":52366.3592},{"Period":1401580800,"x":7660.234},{"Period":1404172800,"x":3967.7503},{"Period":1406851200,"x":2620.771},{"Period":1409529600,"x":1927.5348},{"Period":1412121600,"x":2094.795},{"Period":1414800000,"x":1830.223},{"Period":1417392000,"x":2286.1982},{"Period":1420070400,"x":3047.4511},{"Period":1422748800,"x":2001.4622},{"Period":1425168000,"x":1763.6833},{"Period":1427846400,"x":2033.9456},{"Period":1430438400,"x":4568.8964},{"Period":1433116800,"x":2104.0584},{"Period":1435708800,"x":1522.6288},{"Period":1438387200,"x":533.8585},{"Period":1441065600,"x":667.3039}], "windowWidth":11}')
outliers <-  do.call(detectOutliers, args)
outliers

它正确显示了以下数据框，其中 每一行都被填充

period totalAmount isOutlier
1  1393632000    453.2003         0
2  1396310400    742.9013         0
3  1398902400  52366.3592         1
4  1401580800   7660.2340         0
5  1404172800   3967.7503         0
.....

toJson(outliers) 依次正确序列化此数据帧。

但是当在opencpu上调用时

curl http://opencpuURL/ocpu/library/possibly/R/detectOutliers/json -d \
'{"json":[{"Period":1393632000,"x":453.2003},{"Period":1396310400,"x":742.9013},{"Period ":1398902400,"x":52366.3592},{"Period":1401580800,"x":7660.234},{"Period":1404172800,"x":3967.7503},{"Period":1406851200,"x":2620.771},{"Period ":1409529600,"x":1927.5348},{"Period":1412121600,"x":2094.795},{"Period":1414800000,"x":1830.223},{"Period":1417392000,"x":2286.1982},{"Period ":1420070400,"x":3047.4511},{"Period":1422748800,"x":2001.4622},{"Period":1425168000,"x":1763.6833},{"Period":1427846400,"x":2033.9456},{"Period ":1430438400,"x":4568.8964},{"Period":1433116800,"x":2104.0584},{"Period":1435708800,"x":1522.6288},{"Period":1438387200,"x":533.8585},{"Period ":1441065600,"x":667.3039}],"windowWidth":11}' \
-H "Content-Type: application/json"

结果很奇怪。如您所见，有些行仅包含 2 个字段

[
  {
    "period": 1393632000,
    "totalAmount": 453.2003,
    "isOutlier": 0
  },
  {
    "period": 1396310400,
    "totalAmount": 742.9013,
    "isOutlier": 0
  },
  {
    "totalAmount": 52366.3592,
    "isOutlier": 1
  },
 ....

这里有什么问题？

【问题讨论】：

标签： json r serialization package opencpu

【解决方案1】：

JSON 负载中有一些空格。使用类似的东西

"{\"json\":[{\"周期\":2,\"x\":1},{\"周期\":1,\"x\":1},{\ “佩里奥 d\":3,\"x\":1}],\"windowWidth\":"3"}" -H "Content-Type: application/json"

解决问题

【讨论】：