对R中的base64字符串进行解码会产生意外的二进制输出_R_Base64_Jsonlite

对R中的base64字符串进行解码会产生意外的二进制输出

对R中的base64字符串进行解码会产生意外的二进制输出,r,base64,jsonlite,R,Base64,Jsonlite,我有这个字符串： x <- "W3siY29kZSI6IkIxMTgyIiwiZGVzY3JpcHRpb24iOiJUaXJlIHByZXNzdXJlIG1vbml0b3IgbW9kdWxlIiwiZmF1bHRJbmZvcm1hdGlvbnMiOlt7ImRlc2NyaXB0aW9uIjoiLS0tIn0seyJkZXNjcmlwdGlvbiI6IlRSVUUiLCJkZXNjcmlwdGlvbl9lbmciOiJUUlVFIiwiZGVzY3JpcHRpb25fZnJlIjoiVFJV

我有这个字符串：

x <- "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"

但是，当我将该字符串复制到中时，会得到以下结果：

[{"code":"B1182","description":"Tire pressure monitor module","faultInformations":[{"description":"---"},{"description":"TRUE","description_eng":"TRUE","description_fre":"TRUE","description_ger":"TRUE","description_spa":"TRUE","description_ita":"TRUE","description_tur":"TRUE"}],"freezeFrames":[],"enhancedDtcInfos":[],"status":"ACTIVE","system":"MULTIFUNCTION","systemMeta":{"systemName":null,"subSystemName":null},"description_eng":"Tire pressure monitor module","description_fre":"Module de surveillance de la pression des pneus","description_ger":"Reifendrucküberwachung","description_spa":"Módulo de control de la presión de los neumáticos","description_ita":"Modulo monitor di pressione pneumatico","description_tur":"Lastik basıncı izleme modülü"},{"code":"B124D","description":"Sensor, tyre pressure","faultInformations":[{"description":"---"},{"description":"TRUE","description_eng":"TRUE","description_fre":"TRUE","description_ger":"TRUE","description_spa":"TRUE","description_ita":"TRUE","description_tur":"TRUE"}],"freezeFrames":[],"enhancedDtcInfos":[],"status":"ACTIVE","system":"MULTIFUNCTION","systemMeta":{"systemName":null,"subSystemName":null},"description_eng":"Sensor, tyre pressure","description_fre":"Capteur, pression des pneus","description_ger":"Sensor Reifendruck","description_spa":"Sensor de presión del neumático","description_ita":"Sensore, pressione pneumatici","description_tur":"Sensör, lastik hava basıncı"}]

这实际上是预期的输出。代码有什么问题？

看起来输出是原始编码的。因此，您需要使用

rawToChar

library(base64)
rawToChar(base64_decode(x))
[1] "[{\"code\":\"B1182\",\"description\":\"Tire pressure monitor module\",\"faultInformations\":[{\"description\":\"---\"},{\"description\":\"TRUE\",\"description_eng\":\"TRUE\",\"description_fre\":\"TRUE\",\"description_ger\":\"TRUE\",\"description_spa\":\"TRUE\",\"description_ita\":\"TRUE\",\"description_tur\":\"TRUE\"}],\"freezeFrames\":[],\"enhancedDtcInfos\":[],\"status\":\"ACTIVE\",\"system\":\"MULTIFUNCTION\",\"systemMeta\":{\"systemName\":null,\"subSystemName\":null},\"description_eng\":\"Tire pressure monitor module\",\"description_fre\":\"Module de surveillance de la pression des pneus\",\"description_ger\":\"Reifendrucküberwachung\",\"description_spa\":\"Módulo de control de la presión de los neumáticos\",\"description_ita\":\"Modulo monitor di pressione pneumatico\",\"description_tur\":\"Lastik basıncı izleme modülü\"},{\"code\":\"B124D\",\"description\":\"Sensor, tyre pressure\",\"faultInformations\":[{\"description\":\"---\"},{\"description\":\"TRUE\",\"description_eng\":\"TRUE\",\"description_fre\":\"TRUE\",\"description_ger\":\"TRUE\",\"description_spa\":\"TRUE\",\"description_ita\":\"TRUE\",\"description_tur\":\"TRUE\"}],\"freezeFrames\":[],\"enhancedDtcInfos\":[],\"status\":\"ACTIVE\",\"system\":\"MULTIFUNCTION\",\"systemMeta\":{\"systemName\":null,\"subSystemName\":null},\"description_eng\":\"Sensor, tyre pressure\",\"description_fre\":\"Capteur, pression des pneus\",\"description_ger\":\"Sensor Reifendruck\",\"description_spa\":\"Sensor de presión del neumático\",\"description_ita\":\"Sensore, pressione pneumatici\",\"description_tur\":\"Sensör, lastik hava basıncı\"}]"

编辑

为了更好地理解为什么需要这样做，我们可以检查

base64\u decode（）

的输出类

原始的告诉我们：

原始类型用于保存原始字节。可以提取字节的子序列，并替换元素（但仅替换为原始向量的元素）。。。打印原始向量时，每个字节分别表示为一对十六进制数字。如果要查看字符表示（使用非打印字符的转义序列），请使用rawToChar

所以我们只需要将原始字节转换为字符

资料

x看起来输出是原始编码的。因此，您需要使用rawToChar

library(base64)
rawToChar(base64_decode(x))
[1] "[{\"code\":\"B1182\",\"description\":\"Tire pressure monitor module\",\"faultInformations\":[{\"description\":\"---\"},{\"description\":\"TRUE\",\"description_eng\":\"TRUE\",\"description_fre\":\"TRUE\",\"description_ger\":\"TRUE\",\"description_spa\":\"TRUE\",\"description_ita\":\"TRUE\",\"description_tur\":\"TRUE\"}],\"freezeFrames\":[],\"enhancedDtcInfos\":[],\"status\":\"ACTIVE\",\"system\":\"MULTIFUNCTION\",\"systemMeta\":{\"systemName\":null,\"subSystemName\":null},\"description_eng\":\"Tire pressure monitor module\",\"description_fre\":\"Module de surveillance de la pression des pneus\",\"description_ger\":\"Reifendrucküberwachung\",\"description_spa\":\"Módulo de control de la presión de los neumáticos\",\"description_ita\":\"Modulo monitor di pressione pneumatico\",\"description_tur\":\"Lastik basıncı izleme modülü\"},{\"code\":\"B124D\",\"description\":\"Sensor, tyre pressure\",\"faultInformations\":[{\"description\":\"---\"},{\"description\":\"TRUE\",\"description_eng\":\"TRUE\",\"description_fre\":\"TRUE\",\"description_ger\":\"TRUE\",\"description_spa\":\"TRUE\",\"description_ita\":\"TRUE\",\"description_tur\":\"TRUE\"}],\"freezeFrames\":[],\"enhancedDtcInfos\":[],\"status\":\"ACTIVE\",\"system\":\"MULTIFUNCTION\",\"systemMeta\":{\"systemName\":null,\"subSystemName\":null},\"description_eng\":\"Sensor, tyre pressure\",\"description_fre\":\"Capteur, pression des pneus\",\"description_ger\":\"Sensor Reifendruck\",\"description_spa\":\"Sensor de presión del neumático\",\"description_ita\":\"Sensore, pressione pneumatici\",\"description_tur\":\"Sensör, lastik hava basıncı\"}]"

编辑
为了更好地理解为什么需要这样做，我们可以检查base64\u decode（）
的输出类
原始的

告诉我们：

所以我们只需要将原始字节转换为字符

资料

x漂亮！你能进一步解释一下rawToChar函数吗？太棒了，解释得很好！美好的你能进一步解释一下rawToChar函数吗？太棒了，解释得很好！
> class(base64_decode(x))
#[1] "raw"

x <- "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"