使用请求模块时获取一半的JSON

如何解决使用请求模块时获取一半的JSON

我正在使用节点js express服务器中的请求npm模块将重发邮件发送到Payu服务器以验证付款。以下是代码

var reqpost = require('request'); //required for verify payment
var key = 'tkhyu';
var vhash = 'eff1fc9fe6b6f5184f407c122a4a0e796ef8085acf960ed67a28679884b5ddcf0fde9f776392c2fca617ce180d432cfa1a7e5ad849ecd2d1f4e029ee70e31a89'
var txnid = 'tx1234'
var command = 'verify_payment'
var options = {
  method: 'POST',//uri: 'https://test.payu.in/merchant/postservice.php?form=2',uri : 'https://info.payu.in/merchant/postservice.php?form=2',//live url
  form: {
    key: key,hash: vhash,var1: txnid,command: command
  },headers: {
     'Content-Type': 'application/json'// Is set automatically
  }
};
reqpost(options).on('response',function (resp) {
  console.log('STATUS:'+resp.statusCode);
  resp.setEncoding('utf8');
  resp.on('data',function (chunk) {
    console.log('chunk',chunk);
    vdata = JSON.parse(chunk);
    console.log('vdata',vdata);
  });
})
.on('error',function (err) {
  console.log(err);
  res.send(JSON.stringify(err));
});

在我进入console.log之后，进入了瑞斯潘

chunk {"status":1,"msg":"1 out of 1 Transactions Fetched Successfully","transaction_details":{"FLRC2349909348951":{"mihpayid":"10973572053","request_id":null,"bank_ref_num":null,"amt":"1500.00","transaction_amount":"1500.00","txnid":"FLRC2349909348951","additional_charges":"0.00","productinfo":"Wall Wrap","firstname":"Rahul","bankcode":null,"udf1":null,"udf3":null,"udf4":null,"udf5":null,"field2":null,"field9":"Cancelled by user","error_code":"E1605","addedon":"2020-08-26 1
undefined:1{"status":1,"transaction_details":
{"FLRC2349909348951:
{"mihpayid":"10973572053","addedon":"2020-08-26 1

我收到错误消息

SyntaxError: Unexpected end of JSON input
at JSON.parse (<anonymous>)
at IncomingMessage.<anonymous> (D:\LMS\lms_server\routes\eapplication_routes\user_api\frm_fee_lrcapi.js:174:22)
at IncomingMessage.emit (events.js:203:15)
at IncomingMessage.Readable.read (_stream_readable.js:491:10)
at flow (_stream_readable.js:957:34)
at resume_ (_stream_readable.js:938:3)
at process._tickCallback (internal/process/next_tick.js:63:19)

如果我只打印块而不是打印两次，则

chunk {"status":1,"transaction_details"
{"FLRC2349909348951":{"mihpayid":"10973572053","addedon":"2020-08-26 1
chunk 6:21:39","payment_source":"payu","card_type":null,"error_Message":"Transaction failed due to customer pressing cancel button.","net_amount_debit":"0.00","disc":"0.00","mode":"-","PG_TYPE":"","card_no":"","udf2":null,"status":"failure","unmappedstatus":"userCancelled","Merchant_UTR":null,"Settled_At":null}}}

没弄错我要去哪里

编辑： 我已经按照以下步骤编辑了代码

reqpost(options).on('response',function (resp) {
  console.log('STATUS:'+resp.statusCode);
  resp.setEncoding('utf8');
  var body = [];
  resp.on('data',function (chunk) {
    //console.log('chunk',chunk);
    body.push(chunk);
  }).on('end',()=>{
    // on end of data,perform necessary action
    console.log('body 1',body);
  body = Buffer.concat(body).toString();
  console.log('body',body);
  })
})
.on('error',function (err) {
  console.log(err);
  res.send(JSON.stringify(err));
});

最后，当我在console.log正文中获得以下数据

body 1 [ '{"status":1,"addedon":"2020-08-26 1','6:21:39","Settled_At":null}}}' ]

附加参数由，

分隔

解决方法

data event仅部分。您不能只解析JSON字符串的一半。

在知道所有数据的情况下，将从data事件中收到的所有块构建成字符串，并在end event中进行处理。