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Javascript Watson对话-Oracle数据库集成_Javascript_Node.js_Api_Watson Conversation_Watson - Fatal编程技术网

Javascript Watson对话-Oracle数据库集成

Javascript Watson对话-Oracle数据库集成,javascript,node.js,api,watson-conversation,watson,Javascript,Node.js,Api,Watson Conversation,Watson,早上好/下午好,我正在尝试让Watson返回从Oracle数据库手动设置的响应 我使用async顺序访问数据库并返回响应,因为我遇到的第一个问题是,在Watson返回响应之前,DB查询不会发生。瀑布解决了这个问题 我当前的问题是:在控制台中,我看到所有记录都正确。数据库被查询,response.output.text被正确设置,然后返回给Watson,但我的聊天中从未出现任何响应。。如果我在异步之前设置response.output.text=“asdfa”,asdfa将按预期返回 我在试图弄明

早上好/下午好,我正在尝试让Watson返回从Oracle数据库手动设置的响应

我使用async顺序访问数据库并返回响应,因为我遇到的第一个问题是,在Watson返回响应之前,DB查询不会发生。瀑布解决了这个问题

我当前的问题是:在控制台中,我看到所有记录都正确。数据库被查询,response.output.text被正确设置,然后返回给Watson,但我的聊天中从未出现任何响应。。如果我在异步之前设置response.output.text=“asdfa”,asdfa将按预期返回

我在试图弄明白这一点时不知所措,所以我感谢所有的帮助。如果需要更多信息,请告诉我

  // Send the input to the conversation service
conversation.message(payload, function (err, data) {
if (err) {
return res.status(err.code || 500).json(err);
}
return res.json(updateMessage(payload, data));
});
});

function updateMessage(input, response) {
 var responseText = null;
 if (!response.output) {
 response.output = {};
} else {
// checkNames check
if (response.output.nodes_visited[0] === 'slot_11_1519333387192' && response.entities[0].entity === 'confirm') {

  /* This code actually returns asdfa as a response from Watson.. */
  // response.output.text = "asdfa";
  // return response;
  async.waterfall([
      // this function queries the database
      // TODO: module out the Oracle connection parts once POC is completed
      function queryDB(callback) {
        console.log('Starting queryDB');
        var query = "SELECT column_name FROM table@prod WHERE column_id = '" + response.context.VSUID + "'";
        oracledb.getConnection('hr',
          function (err, connection) {
            var conn = oracleGetConnection(err, connection);
            conn.execute(query, {}, {
                outFormat: oracledb.OBJECT
              },
              function (err, result) {

                console.log('result from Oracle: ', result);
                // pass a null error and the result of the query

                callback(null, result.rows[0]);
              });
          });
      },
      // this function formats the result of the query
      // TODO: this should not be it's own function. This can happen at the same time the db gets the row 
      function formatName (arg1, callback) {
        console.log('this should happen after query..');
        console.log('arg1: ', arg1);

        var r = JSON.stringify(arg1);
        r = r.substring((r.indexOf(':') + 1) + 1, r.length - 2);
        console.log('Name is: ', r);
        // pass a null error and the formatted name
        callback(null, r);
      }
    ],
    // Final function to be ran after the two above have completed 
    function finalFunction (err, result) {
      if (err) {
        console.log('uh oh async err: ', err);
      } else {
        console.log('This is final Function');
        // set output text
        response.output.text = 'Is your name ' + result + '?';
        // response.context.dbResponse = 'Is your name ' + result + '?';
        // response.output.text = "asdfasdfasd";
        // console.log('This is the value of response\n\n', response);
        // var resp = returnResponse(input, response);
        response.context.dbResponse = response.output.text[0];
        return returnResponse(input, response);
        // return response;
      }
    });
    // response.output.text = "asdfa";
    console.log('This is response.output.text ', response.output.text);
    return response;
} else {
  //If no special if case to query the db just run Watson Conversation stock
  return returnResponse(input, response);
}
} }

下面是一个控制台日志示例

This logs the Input from the user:
name 111111111
This logs the Response from Watson:
Is 111111111correct?
This logs the intent recognized, if any:
nameCheck
This logs the entity recognized, if any:
VSUID
This logs the text that is being returned to the user:  [ 'Is 111111111correct?'
]
Starting queryDB
Connected to database
result from Oracle:  { outBinds: undefined,
  rowsAffected: undefined,
  metaData: [ { name: 'TABLE_FIRST_NAME' } ],
  rows: [ [ 'Tyler' ], [ 'Tyler' ] ],
  resultSet: undefined }
this should happen after query..
arg1:  [ 'Tyler' ]
Name is:  "Tyler
This is final Function
This logs the Input from the user:
yes
This logs the Response from Watson:
Is your name "Tyler?
This logs the entity recognized, if any:
confirm
This logs the text that is being returned to the user:  Is your name "Tyler? 

编写如下代码将使您面临SQL注入漏洞(以及可能的性能问题):

请仔细阅读

关于你的问题

您将
updateMessage
视为一个同步函数,但它正在执行异步工作。执行异步工作的函数将需要异步API,例如Node.js样式的回调、承诺或异步函数(async/await)

如果您看到您提供的代码的第73行,那么您正在“返回”响应对象,但这不在
async.fallet
调用的范围之内。由于Node.js的异步特性,即使是第67行的返回也无法工作

下面是我最近一次尝试描述这一切是如何运作的:

您可以在此处访问幻灯片和示例代码:

在示例代码的code>headerdetail目录中,您将看到5个不同的文件,它们以headerdetail开头,后面跟着-,但您可以选择不同的API名称。您必须对
updateMessage
API做出类似的选择


要运行测试,请使用ddl.sql文件创建目标表,然后根据环境需要编辑db config.js,最后从该目录中的终端运行
node test.js 1
。您可以更改结尾处的数字以运行不同的测试文件。

Dan,您真是太棒了。我已经观看了您的视频(顺便说一句,您将其删除),并使用示例代码重建了我的异步调用。遗憾的是,我遇到了同样的问题,因为我的数据库代码依赖于Watson的“response”对象,无论我如何实现它,似乎在异步调用完成之前就返回了响应。这是当前的代码。我想从逻辑上知道我应该如何处理这件事。。谢谢看看这是否有帮助:我不能测试它的语法错误等,但也许它会给你的想法…经过一些代码的改编后,我有它的工作丹!!你给我的帮助比我得到的任何支持都多,这太疯狂了。非常感谢。非常感谢。非常感谢。很高兴听到这个消息!
var query = "SELECT column_name FROM table@prod WHERE column_id = '" + response.context.VSUID + "'";