mscorlib: TypeError: context.res is not a function

Question

我正在为 Azure Functions 编写一个 NodeJS 函数。但是，当尝试调用 context.res 到 return 对调用者的响应时，该函数失败并出现以下异常：

2016-06-26T07:45:59.171 Exception while executing function: Functions.getSASToken. mscorlib: TypeError: context.res is not a function
    at module.exports (D:\home\site\wwwroot\getSASToken\index.js:63:26)
    at eval (eval at <anonymous> (C:\Program Files (x86)\SiteExtensions\Functions[=10=].2.10238\bin\edge\double_edge.js:34:28), <anonymous>:42:7).

function.json 文件的内容：

{
  "bindings": [
    {
      "webHookType": "",
      "name": "req",
      "type": "httpTrigger",
      "direction": "in",
      "authLevel": "anonymous"
    },
    {
      "name": "res",
      "type": "http",
      "direction": "out"
    }
  ],
  "disabled": false
}

有问题的函数：

module.exports = function(context, req) { 
    var token = req.query.token;
    var deviceId = req.query.deviceId;

    var resourceUri = util.format('%s/devices/%s', sbNamespace, deviceId);

    var sasToken = generateSasToken(resourceUri, token, null, 14400);

    context.res({
        status: 200,
        body: sasToken
    });

    context.done();
}

遍历 context.bindings 对象表明它只包含属性 req（res 完全缺失）。

仅供参考，通过 context.done(null, {res: {status:200, body: sasToken}} 覆盖响应对象会 return 向调用者提供所需的输出。

Answer 1

而不是

context.res({
    status: 200,
    body: sasToken
});

你需要

context.res = {
    status: 200,
    body: sasToken
};

mscorlib: TypeError: context.res is not a function

mscorlib: TypeError: context.res is not a function

azure

azure-functions