使用poster向azure ML Web服务发送POST请求

Question

我已经成功地使用Azure ML部署了一个web服务，并且能够在Azure ML和一个示例R客户端应用程序上获得输出。

不过，我想用火狐的海报得到回应。

我遵循了Azure页面中关于部署web服务的说明，并尝试使用相同的请求头和参数，如下所示

来自azure页面的说明

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这是我在Poster上尝试过的

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错误消息

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我的R代码是有效的

library("RCurl")
library("rjson")

# Accept SSL certificates issued by public Certificate Authorities
options(RCurlOptions = list(cainfo = system.file("CurlSSL", "cacert.pem", package = "RCurl")))

h = basicTextGatherer()
hdr = basicHeaderGatherer()


req = list(

        Inputs = list(


            "input1" = list(
                "ColumnNames" = list("Smoker", "GenderCD", "Age"),
                "Values" = list( list( "1", "M", "8" ),  list( "1", "M", "8" )  )
            )                ),
        GlobalParameters = setNames(fromJSON('{}'), character(0))
)

body = enc2utf8(toJSON(req))
api_key = "hHlKbffejMGohso5yiJFke0D9yCKwvcXHG8tfIL2d8ccWZz8DN8nqxh9M4h727uVWPz+jmBgm0tKBLxnPO4RyA=="
authz_hdr = paste('Bearer', api_key, sep=' ')

h$reset()
curlPerform(url = "https://ussouthcentral.services.azureml.net/workspaces/79f267a884464b6a95f5819870787918/services/e3490c06c73849f8a78ff320f7e5ffbc/execute?api-version=2.0&details=true",
            httpheader=c('Content-Type' = "application/json", 'Authorization' = authz_hdr),
            postfields=body,
            writefunction = h$update,
            headerfunction = hdr$update,
            verbose = TRUE
            )

headers = hdr$value()
httpStatus = headers["status"]
if (httpStatus >= 400)
{
    print(paste("The request failed with status code:", httpStatus, sep=" "))

    # Print the headers - they include the requert ID and the timestamp, which are useful for debugging the failure
    print(headers)
}

print("Result:")
result = h$value()
print(fromJSON(result))

我的API密钥

hHlKbffejMGohso5yiJFke0D9yCKwvcXHG8tfIL2d8ccWZz8DN8nqxh9M4h727uVWPz+jmBgm0tKBLxnPO4RyA==

我怎样才能形成一个正确有效的URL？

Answer 1

"Content to Send“部分不正确，您指定了URL编码，但需要放入application/json。

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