在 nodejs put 请求中自动附加不需要的字符

Question

我有一个 api 可以在 Bluemix Object Storage by using request 模块上上传文件。一切都很好，但有一些不需要的字符会自动附加。

example:  
--38oi85df-b5d1-4d42-81ce-c547c860b512 //this is unwanted character
  Email 
 abc@gmail.com
 hsl@gmsl.com 
 pjeyjle@cse.com
--38oi85df-b5d1-4d42-81ce-c547c860b512-- // this is unwanted character

这是我的代码：-

import request from 'request';

exports.putObjectStorageFile = function(authToken, file, csv, cb) {  
var s = new stream.Readable();   
s._read = function noop() {}; 
s.push(csv); //csv is string   
s.push(null);   
var options = {
    url: 'https://xxxx.objectstorage.open.xxxx.com/v1/AUTH_' + config.objectStorage.projectId + '/xxxx/' + file,
    method: 'PUT',
    preambleCRLF: true,
    postambleCRLF: true,
    encoding: 'utf-8',
    headers: {
      'Content-Type': 'text/html; charset=UTF-8',
      'Content-Length': 1,
      'X-Auth-Token': authToken
    },
    multipart: {
      chunked: false,
      data: [
        { body: s }
      ]
    }   };

  function callback(error, response) {
    if (error) cb(error);
    if (!error && response.statusCode == 201) {
      cb(null);
    } 
  }   
request(options, callback);

Answer 1

您发送的多部分消息在您的请求中包含 preambleCRLF 和 postambleCRLF，这导致了这些行。

您应该使用 pkgcloud 库将数据上传到对象存储：

https://github.com/pkgcloud/pkgcloud

下面是将 pkgcloud 与 Bluemix 上的对象存储服务结合使用的示例（来自 VCAP 的凭据）。

(function (module) {
    var pkgcloud = require('pkgcloud'),
        fs = require('fs');

    function ObjectStorage(container, credentials) {
        this.container = container;

        this.config = {
            provider: 'openstack',
            useServiceCatalog: true,
            useInternal: false,
            keystoneAuthVersion: 'v3',
            authUrl: credentials.auth_url,
            tenantId: credentials.projectId,
            domainId: credentials.domainId,
            username: credentials.username,
            password: credentials.password,
            region: credentials.region
        };

        this.client = pkgcloud.storage.createClient(this.config);
    }

    ObjectStorage.prototype.validate = function () {
        return new Promise(function (resolve, reject) {
            this.client.auth(function (error) {
                if (error) {
                    return reject(error);
                }

                resolve();
            });
        }.bind(this));
    };

    ObjectStorage.prototype.makeContainer = function () {
        return new Promise(function (resolve, reject) {

            this.client.createContainer({name: this.container}, function (error) {
                if (error) {
                    return reject(error);
                }

                return resolve();
            });

        }.bind(this));
    };

    ObjectStorage.prototype.uploadFile = function (path, name) {
        return new Promise(function (resolve, reject) {

            var myPicture = fs.createReadStream(path);

            var upload = this.client.upload({
                container: this.container,
                remote: name
            });

            upload.on('error', function (error) {
                reject(error);
            });

            upload.on('success', function (file) {
                resolve(file);
            });

            myPicture.pipe(upload);
        }.bind(this));
    };

    module.exports = ObjectStorage;
})(module);

Answer 2

由于使用多部分发送数据，我得到了这些行。我通过在正文中添加内容类型、内容长度和发送数据找到了解决方案，即

var options = {
    url: 'https://dal.objectstorage.open.softlayer.com/v1/AUTH_' + config.objectStorage.projectId + '/nrich-storage/' + file,
    method: 'PUT',
    headers: {
      'Content-Type': 'text/csv',
      'Content-Length': csv.length,
      'X-Auth-Token': authToken
    },
    body:csv
  };

  function callback(error, response) {
    if (error) cb(error);
    if (!error && response.statusCode == 201) {
      cb(null);
    }
  }

request(options, callback);

在 nodejs put 请求中自动附加不需要的字符

Auto append unwanted character in nodejs put request

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node.js

object-storage

ibm-cloud