如何提取从createRecognizeStream（）方法返回的值？

使用Watson语音到文本服务如何提取从createRecognizeStream（）方法返回的值？

这是一个示例代码块。 我想在terminal看到中期的结果，但我得到的是这个。 如何设置结果出现的选项？

{ results: [ { alternatives: [Object], final: false } ], result_index: 0 } { results: [ { alternatives: [Object], final: false } ], result_index: 0 } { results: [ { alternatives: [Object], final: false } ]... 

他们应该看起来像这样：

 { "results": [ { "alternatives": [ { "timestamps": [ [ "Here", 0.08, 0.63 ], [ "I", 0.66, 0.95 ], [ "Open", 0.95, 1.07 ], [ "a", 1.07, 1.33 ], [ "strong", 1.33, 1.95 ], [ "group", 2.03, 2.18 ], [ "of", 2.18, 2.72 ], [ 

示例代码：

  // create the stream var recognizeStream = speech_to_text.createRecognizeStream(params); // pipe in some audio fs.createReadStream(filepath).pipe(recognizeStream);; // and pipe out the transcription recognizeStream.pipe(fs.createWriteStream('transcriptions/transcription-' + path.basename(filepath) + '.txt')); // listen for 'data' events for just the final text // listen for 'results' events to get the raw JSON with interim results, timings, etc. recognizeStream.setEncoding('utf8');// to get strings instead of Buffers from `data` events ['data','results', 'error', 'connection-close'].forEach(function(eventName) { //JSON.stringify(eventName, null, 2) //fs.writeFile('./transcript.txt', JSON.stringify(transcript), function(err) {if(err){return console.log('err')}}); recognizeStream.on('results', console.log.bind(console, '')); }); 

Answer 1

如果您需要一个漂亮的多行JSON，则需要将JSON串联起来：

而不是使用console.log你应该使用：

 JSON.stringify(value[, replacer[, space]]) 

根据你的例子，你会做：

 var recognizeStream = speech_to_text.createRecognizeStream(params); fs.createReadStream(filepath).pipe(recognizeStream); recognizeStream.setEncoding('utf8'); // print interim results and final results ['data','results'].forEach(function(eventName) { recognizeStream.on(eventName, JSON.stringify.bind(JSON)); }); // print error and connection-close events ['error', 'connection-close'].forEach(function(eventName) { recognizeStream.on(eventName, console.log.bind(console, '')); });