语音识别服务器REST API返回500（内部服务器错误） [英] Speech Recognition Server REST API returning 500 (internal server error)

问题描述

我无法搞清楚api文档。  我已经进行了综合api调用，所以我知道我得到了一个很好的访问令牌。  现在无论我尝试什么，我都会从识别服务器获得500回。

我正在使用标准的"whatstheweatherlike.wav"。测试文件以消除这个问题。

这是使用Microsoft的C ++卡萨布兰卡的代码：

#include< cpprest / http_client.h>

#include< cpprest / filestream.h>
$


使用命名空间实用程序; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;   //字符串转换等常用实用程序使用命名空间Web进行
; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;   // URI等常用功能。

using namespace web :: http; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;   //通用HTTP功能

使用命名空间web :: http :: client; &NBSP; &NBSP; &NBSP; &NBSP;   // HTTP客户端功能使用namespace concurrency :: streams;
; &NBSP; &NBSP; &NBSP; //异步流

使用命名空间实用程序::转换;



#include< fstream>

＃ include< string>



命名空间{

std :: vector< unsigned char> readAllBytes（std :: string filename）

{

std :: ifstream ifs（filename.c_str（），std :: ios :: binary | std :: ios :: ate）;

std :: ifstream :: pos_type pos = ifs.tellg（）;



std :: vector< unsigned char>结果（pos）;
$


ifs.seekg（0，std :: ios :: beg ）; $
ifs.read（（char *）& result [0]，pos）;



返回结果;

}

}



int main（int argc，char ** argv）

{

auto clientId = U（""）; &NBSP; &NBSP; //删除到论坛发帖

auto clientSecret = U（""）; //删除到论坛发帖

auto speechHost = U（" https：//speech.platform.bing.com" ）; $


uri_builder ub;

ub.append_query（U（"grant_type"）），U（"client_credentials"））;

ub.append_query（U（" client_id"），clientId）;

ub.append_query（U （"client_secret"），clientSecret）;
$
ub.append_query（U（" scope"），speechHost）;



auto accessTokenPostData = to_utf8string（ub.query（））;



http_client tokenClient（U（" https://oxford-speech.cloudapp.net"））;



http_request tokenRequest（methods :: POST）;

tokenRequest.set_request_uri（uri（U（&/ token / issueToken"）））;
$
tokenRequest.set_body（accessTokenPostData）;
$


http_headers tokenHeaders;

tokenHeaders [U（"Content-type"）] = U（"application / x-www" -form-urlencoded"）;

tokenRequest.headers（）= tokenHeaders;



tokenClient.request（tokenRequest）

.then（[]（http_response response） - > pplx :: task< http_response>

{

if（response.status_code（）== status_codes :: OK）

{

auto accessTokenJSON = response.extract_json（）。get（）;

auto accessTokenName = U（" access_token"）;

auto accessTokenExpiresInName = U（" expires_in" ）; $
if（accessTokenJSON.has_field（accessTokenName））

{

auto accessToken = accessTokenJSON [accessTokenName] .as_string（）;



http_client recognitionClient（U（"https：//speech.platform.bing.com"））;



http_request reco gnitionRequest（methods :: POST）;
$


auto appGeneratedRequestId = U（" 1d4b6030-9099 -11e0-91e4-0800200c9a22"）;

auto deviceId = U（" 1d4b6030-9099-11e0-91e4-0800200c9a00" ）; $


uri_builder builder;

builder.set_host（U（" https：//speech.platform.bing.com"））;

builder.set_path（U（" / recognition"））;;
builder.append_query（ U（"版本"），U（"3.0"））;

builder.append_query（U（"） requestid"），appGeneratedRequestId）;
$
builder.append_query（U（"appid"），U（" D4D52672-91D7） -4C74-8AD8-42B1D98141A5"））;

builde r.append_query（U（"格式"），U（"json"））;

builder.append_query（U （"locale"），U（"en-US"））;

builder.append_query（U（"） device.os"），U（" Windows OS"））;
$
builder.append_query（U" scenario" ），U（"ulm"））;

builder.append_query（U（"instanceid"），deviceId）;



recognitionRequest.set_request_uri（builder.to_uri（））;



recognitionRequest.set_body（readAllBytes（" whatstheweatherlike.wav）））;



http_headers标头;

标头[U（"Content-type"）] = U（"audio / wav;编解码器="音频/ WAV"; samplerate = 16000"）;

标题[U（"授权"）] = U（"承载"）+ accessToken;
$


recognitionRequest.headers（）= headers;



返回recognitionClient.request（recognitionRequest）;

}

}

返回pplx :: task_from_result（http_response（））;

}）

.then（[]（http_response response）

{

if（response.status_code（）== status_codes :: OK）

{

auto body = response.extract_json（）。get（） ;
$
}

}）。wait（）;



#include< windows.h>
$


int WINAPI WinMain（HINSTANCE，HINSTANCE，LPSTR，INT）

{

返回main（__ argc，__ argv）;

}

解决方案

  Hi RatherSleepy，

我不确定这是否正确，你能帮忙更新以下一行吗？

headers [U（"Content-type"）] = U（" audio / wav; codec ="audio / wav"; samplerate = 16000"）;

试试这个

headers [U（"Content-type"）] = U（" audio / wav; samplerate = 8000 "）;

你确定你有500个内部错误吗？非常感谢。

Jia

I'm having trouble figuring out the api documentation.  I've got the synthesis api call working so I know that I'm getting a good access token.  Right now I get a 500 back from the recognition server no matter what I try.

I'm using the standard "whatstheweatherlike.wav" test file to eliminate that as a problem.

Here is my code using Microsoft's C++ Casablanca:

#include <cpprest/http_client.h>
#include <cpprest/filestream.h>

using namespace utility;                    // Common utilities like string conversions
using namespace web;                        // Common features like URIs.
using namespace web::http;                  // Common HTTP functionality
using namespace web::http::client;          // HTTP client features
using namespace concurrency::streams;       // Asynchronous streams
using namespace utility::conversions;

#include <fstream>
#include <string>

namespace {
std::vector<unsigned char> readAllBytes(std::string filename)
{
std::ifstream ifs(filename.c_str(), std::ios::binary | std::ios::ate);
std::ifstream::pos_type pos = ifs.tellg();

std::vector<unsigned char> result(pos);

ifs.seekg(0, std::ios::beg);
ifs.read((char *)&result[0], pos);

return result;
}
}

int main(int argc, char ** argv)
{
auto clientId = U("");     // removed to post on forum
auto clientSecret = U(""); // removed to post on forum
auto speechHost = U("https://speech.platform.bing.com");

uri_builder ub;
ub.append_query(U("grant_type"), U("client_credentials"));
ub.append_query(U("client_id"), clientId);
ub.append_query(U("client_secret"), clientSecret);
ub.append_query(U("scope"), speechHost);

auto accessTokenPostData = to_utf8string(ub.query());

http_client tokenClient(U("https://oxford-speech.cloudapp.net"));

http_request tokenRequest(methods::POST);
tokenRequest.set_request_uri(uri(U("/token/issueToken")));
tokenRequest.set_body(accessTokenPostData);

http_headers tokenHeaders;
tokenHeaders[U("Content-type")] = U("application/x-www-form-urlencoded");
tokenRequest.headers() = tokenHeaders;

tokenClient.request(tokenRequest)
.then([](http_response response)-> pplx::task<http_response>
{
if (response.status_code() == status_codes::OK)
{
auto accessTokenJSON = response.extract_json().get();
auto accessTokenName = U("access_token");
auto accessTokenExpiresInName = U("expires_in");
if (accessTokenJSON.has_field(accessTokenName))
{
auto accessToken = accessTokenJSON[accessTokenName].as_string();

http_client recognitionClient(U("https://speech.platform.bing.com"));

http_request recognitionRequest(methods::POST);

auto appGeneratedRequestId = U("1d4b6030-9099-11e0-91e4-0800200c9a22");
auto deviceId = U("1d4b6030-9099-11e0-91e4-0800200c9a00");

uri_builder builder;
builder.set_host(U("https://speech.platform.bing.com"));
builder.set_path(U("/recognize"));
builder.append_query(U("version"), U("3.0"));
builder.append_query(U("requestid"), appGeneratedRequestId);
builder.append_query(U("appid"), U("D4D52672-91D7-4C74-8AD8-42B1D98141A5"));
builder.append_query(U("format"), U("json"));
builder.append_query(U("locale"), U("en-US"));
builder.append_query(U("device.os"), U("Windows OS"));
builder.append_query(U("scenarios"), U("ulm"));
builder.append_query(U("instanceid"), deviceId);

recognitionRequest.set_request_uri(builder.to_uri());

recognitionRequest.set_body(readAllBytes("whatstheweatherlike.wav"));

http_headers headers;
headers[U("Content-type")] = U("audio/wav; codec="audio/wav"; samplerate=16000");
headers[U("Authorization")] = U("Bearer ") + accessToken;

recognitionRequest.headers() = headers;

return recognitionClient.request(recognitionRequest);
}
}
return pplx::task_from_result(http_response());
})
.then([](http_response response)
{
if (response.status_code() == status_codes::OK)
{
auto body = response.extract_json().get();
}
}).wait();

#include <windows.h>

int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, INT)
{
return main(__argc, __argv);
}

解决方案

 Hi RatherSleepy,

I am not so sure if this is right, could you help to update the following line?

headers[U("Content-type")] = U("audio/wav; codec="audio/wav"; samplerate=16000");

Try this

headers[U("Content-type")] = U("audio/wav; samplerate=8000");

Are you sure you got 500 internal error? Thanks a lot.

Jia

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