导出到R中列表的JSON列表

2023年9月3日 146次阅读

我需要导出到json列表列表以获得输出
JSON,如下一个：

{
  "timestamp":"2018-02-01 10:20",
  "aux":[
    {"id":"x1","prog":['A','A','A']},
    {"id":"x2","prog":['A','A','A']},
    {"id":"x3","prog":['A','A','A']}
  ]
}

我如何制作一个列表来获得这样的JSON？提前致谢.

编辑：

这就是我正在尝试的：

l1 <- list(timestamp = "2018-02-01 10:20", 
           aux = list(id = c("x1","x2","x3"), 
           prog = rep('A',3)))

这是我得到的JSON：

{"timestamp":"2018-02-01 10:20",
 "aux":{"id":["x1","x2","x3"],
        "prog":["A","A","A"]}
}

最佳答案 您可以使用其他级别的列表来获取该结构：

l1 <- list(timestamp = "2018-02-01 10:20", 
           aux = list(list(id = "x1", prog = rep('A',3)),
                      list(id = "x2", prog = rep('A',3)),
                      list(id = "x3", prog = rep('A',3))))

jsonlite::toJSON(l1, pretty = TRUE, auto_unbox = TRUE)
#> {
#>   "timestamp": "2018-02-01 10:20",
#>   "aux": [
#>     {
#>       "id": "x1",
#>       "prog": ["A", "A", "A"]
#>     },
#>     {
#>       "id": "x2",
#>       "prog": ["A", "A", "A"]
#>     },
#>     {
#>       "id": "x3",
#>       "prog": ["A", "A", "A"]
#>     }
#>   ]
#> }
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