Empty string cannot be passed in HttpTrigger query string · Issue #683 · Azure/azure-functions-java-worker (original) (raw)

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Description

Repro steps

1. Run the following function from templates:

package com.function;

import java.util.; import com.microsoft.azure.functions.annotation.; import com.microsoft.azure.functions.*;

/**

• Azure Functions with HTTP Trigger. / public class HttpTriggerJava1 { /*

  • This function listens at endpoint "/api/HttpTriggerJava1". Two ways to invoke it using "curl" command in bash:

  • 1. curl -d "HTTP Body" {your host}/api/HttpTriggerJava1
  • 1. curl {your host}/api/HttpTriggerJava1?name=HTTP%20Query */ @FunctionName("HttpTriggerJava1") public HttpResponseMessage run( @HttpTrigger(name = "req", methods = {HttpMethod.GET, HttpMethod.POST}, authLevel = AuthorizationLevel.FUNCTION) HttpRequestMessage<Optional> request, final ExecutionContext context) { context.getLogger().info("Java HTTP trigger processed a request.");

    // Parse query parameter String query = request.getQueryParameters().get("name"); String name = request.getBody().orElse(query);

    if (name == null) { return request.createResponseBuilder(HttpStatus.BAD_REQUEST).body("Please pass a name on the query string or in the request body").build(); } else { return request.createResponseBuilder(HttpStatus.OK).body("Hello, " + name).build(); }

  }

}

1. Send the following request: http://localhost:7071/api/HttpTriggerJava1?name=

Expected behavior

name should be set to an empty string and the function should return "Hello, "

Actual behavior

name is set to null and the function returns "Please pass a name on the query string or in the request body"

Known workarounds

None

Related information

Similar issue in PowerShell worker: Azure/azure-functions-powershell-worker#895