Http通过API网关返回500

Question

我一直在进行HTTP调用，它将返回一个Mp3Base64对象。我已经获得授权，因此它肯定会到达API网关，但现在返回500。有人可以告诉我我要去哪里了吗？

executePost方法在前端程序中创建http。我有一个名为Mp3Base64的模型，其中只有一个字符串，我将它作为json发送。 ServiceCollectHttp在AWS Lambda函数的后端程序中，以收集http并将Mp3Base64发回。

最后，我在AWS Lambda函数中有一个ApplicationHandler作为http定位目标。

public String executePost(String targetURL, Mp3Base64 mp3Base64) throws IOException {

ObjectMapper mapper = new ObjectMapper();
String mp3Base64Json = mapper.writeValueAsString(mp3Base64);
URL obj = new URL(targetURL);
HttpURLConnection connection = (HttpURLConnection) obj.openConnection();
connection = (HttpURLConnection) obj.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type",
        "application/x-www-form-urlencoded");

connection.setRequestProperty("Content-Length",
        Integer.toString(mp3Base64Json.getBytes().length));
connection.setRequestProperty("Content-Language", "en-US");

connection.setUseCaches(false);
connection.setDoOutput(true);
//Add authorizer
connection.setRequestProperty("key","keyValue");

//Send request
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
wr.writeBytes("base64=" + mp3Base64Json);
wr.flush();
wr.close();

//Get Response
int responseCode = connection.getResponseCode();
System.out.println("\nSending 'POST' request to URL : " + targetURL);
System.out.println("Post parameters : base64 =" + mp3Base64Json);
System.out.println("Response Code : " + responseCode);
InputStream is = connection.getInputStream();     
BufferedReader in = new BufferedReader(
        new InputStreamReader(connection.getInputStream()));
String inputLine
StringBuffer response = new StringBuffer();

while ((inputLine = in.readLine()) != null) {
    response.append(inputLine);
}
in.close();

//print result
System.out.println(response.toString());
return response.toString();
}

@Path("/default/AudibleTranscribe")
public class ServiceCollectHttp {

@POST
//Make it create a json 
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON) 
//Attach the query parameter that has to be added
public Response getBase64(
@QueryParam("base64") String base64) throws JsonProcessingException {
System.out.println(base64);
ObjectMapper mapper = new ObjectMapper();
mapper.readValue(base64, Mp3Base64.class);
return Response.status(Response.Status.OK).entity(base64).build();
}

public class Mp3Base64 {

private String base64;
public String getBase64() {
return base64;
}

public void setBase64(String base64) {
this.base64 = base64
}
}

public class ApplicationHandler implements RequestStreamHandler {

private static final ResourceConfig jerseyApplication = new ResourceConfig()
    .packages("transcribe.back")
    .property(ServerProperties.BV_SEND_ERROR_IN_RESPONSE, true)
    .property(ServerProperties.BV_DISABLE_VALIDATE_ON_EXECUTABLE_OVERRIDE_CHECK, true)
    .register(JacksonFeature.class);

private static final JerseyLambdaContainerHandler<AwsProxyRequest, AwsProxyResponse> handler
    = JerseyLambdaContainerHandler.getAwsProxyHandler(jerseyApplication);

@Override
public void handleRequest(InputStream inputStream, OutputStream outputStream, 
Context context) throws IOException {
handler.proxyStream(inputStream, outputStream, context);
}
}