Question

这是我的离子代码

dialogflow(question) {
    let headers = new Headers();
    headers.append('Content-Type','application/json');
    return this.http.post('http://localhost:3000/api/dialogflow',question,{headers: headers})
    .map(res => res.json());
  }

在控制台日志中，我收到错误消息

POST http://localhost:3000/api/dialogflow 400（错误请求）这是来自路由文件（后端）

router.post('/dialogflow', function(req,res) {
  console.log('reached here');

在后端（平均）控制台中，它抛出错误

SyntaxError: Unexpected token h in JSON at position 0
    at JSON.parse (<anonymous>)
    at createStrictSyntaxError (D:\product\project-1\node_modules\body-parser\lib\types\json.js:158:10)
    at parse (D:\product\project-1\node_modules\body-parser\lib\types\json.js:83:15)
    at D:\product\project-1\node_modules\body-parser\lib\read.js:121:18
    at invokeCallback (D:\product\project-1\node_modules\raw-body\index.js:224:16)
    at done (D:\product\project-1\node_modules\raw-body\index.js:213:7)
    at IncomingMessage.onEnd (D:\product\project-1\node_modules\raw-body\index.js:273:7)
    at emitNone (events.js:106:13)
    at IncomingMessage.emit (events.js:208:7)
    at endReadableNT (_stream_readable.js:1064:12)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)

我该如何解决？

Answer 1

要发送的对象未正确序列化。

at JSON.parse (<anonymous>)
at createStrictSyntaxError (D:\product\project-1\node_modules\body-parser\lib\types\json.js:158:10)
at parse (D:\product\project-1\node_modules\body-parser\lib\types\json.js:83:15)

SyntaxError：JSON中位于JSON位置0的意外令牌h。parse：均值堆栈

1 个答案: