我在构建以下数据时遇到了一些困难,我希望在这个主题上得到专家的帮助
我需要在pyspark的数据帧中构造一个json。我没有完整的模式,但下面的嵌套结构不变:
import http.client conn = http.client.HTTPSConnection("xxx")
payload = ""
conn.request("GET", "xxx", payload)
res = conn.getresponse() data = res.read().decode("utf-8")
json_obj = json.loads(data)
df = json.dumps(json_obj, indent=2)
这是Json:
{ "car": {
"top1": {
"cl": [
{
"nm": "Setor A",
"prc": "40,00 %",
"tv": [
{
"logo": "https://www.test.com/ddd.jpg",
"nm": "BDFG",
"lk1": "https://www.test.com/ddd/BDFG/",
"lk2": "https://www.test-ddd.com",
"dta": [
{
"nm": "PA",
"cp": "nl",
"vl": "$ 2,50"
},
{
"nm": "FVP",
"cp": "UV",
"vl": "No"
}
],
"prc": "30,00 %"
},
{
"logo": "https://www.test.com/ccc.jpg",
"nome": "BDFH",
"lk1": "https://www.test.com/ddd/BDFH/",
"lk2": "https://www.test-ddd.com",
"dta": [
{
"nm": "PA",
"cp": "nl",
"vl": "$ 2,50"
},
{
"nm": "FVP",
"cp": "UV",
"vl": "No"
}
],
"prc": "70,00 %"
}
]
},
{
"nm": "B",
"prc": "60,00 %",
"tv": [
{
"logo": "https://www.test.com/bomm.jpg",
"nm": "BOOM",
"lk1": "https://www.test.com/ddd/BDFH/",
"lk2": "https://www.test-ddd.com",
"dta": [
{
"nm": "PA",
"cp": "nl",
"vl": "$ 2,50"
},
{
"nm": "FVP",
"cp": "UV",
"vl": "No"
}
],
"prc": "100,00 %"
}
]
}
]
},
"top2": {
"cl": [{}]
"top3": {
"cl": [{}]
}
Example of a json file
我试图以某种方式组织我的数据,但没有成功:
schema = StructType(
[
StructField("car", ArrayType(StructType([
StructField("top1", ArrayType(StructType([
StructField("cl", ArrayType(StructType([
StructField("nm", StringType(),True),
StructField("prc", StringType(),True),
StructField("tv", ArrayType(StructType([
StructField("logo", StringType(),True),
StructField("nm", StringType(),True),
StructField("lk1", StringType(),True),
StructField("lk2", StringType(),True),
StructField("dta", ArrayType(StructType([
StructField("nm", StringType(),True),
StructField("cp", StringType(),True),
StructField("vl", StringType(),True)]))),
StructField("prc", StringType(),True)])))])))]))),
StructField("top2", ArrayType(StructType([
StructField("cl", ArrayType(StructType([
StructField("nm", StringType(),True),
StructField("prc", StringType(),True),
StructField("tv", ArrayType(StructType([
StructField("logo", StringType(),True),
StructField("nm", StringType(),True),
StructField("lk1", StringType(),True),
StructField("lk2", StringType(),True),
StructField("dta", ArrayType(StructType([
StructField("nm", StringType(),True),
StructField("cp", StringType(),True),
StructField("vl", StringType(),True)]))),
StructField("prc", StringType(),True)])))])))]))),
StructField("top3", ArrayType(StructType([
StructField("cl", ArrayType(StructType([
StructField("nm", StringType(),True),
StructField("prc", StringType(),True),
StructField("tv", ArrayType(StructType([
StructField("logo", StringType(),True),
StructField("nm", StringType(),True),
StructField("lk1", StringType(),True),
StructField("lk2", StringType(),True),
StructField("dta", ArrayType(StructType([
StructField("nm", StringType(),True),
StructField("cp", StringType(),True),
StructField("vl", StringType(),True)]))),
StructField("prc", StringType(),True)])))])))])))])))])
df2 = sqlContext.read.json(df, schema)
df2.printSchema()
我想改变这样的东西:
是否有任何功能可以促进此中断并构建此数据
您可以将JSON文件路径或RDD传递给JSON()方法
您需要使用parallelize()从JSON字符串中创建RDD,然后将此RDD传递给JSON()
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