This topic describes how to call the put operation to upload a local file to Object Storage Service (OSS).

The following code provides an example on how to upload a local file named examplefile.txt to the examplebucket bucket. After the local file is uploaded, the name of the object stored in OSS is exampleobject.txt.

const OSS = require('ali-oss')
const path = require("path")

const client = new OSS({
  // Set yourregion to the endpoint of the region in which the bucket is located. For example, if your bucket is located in the China (Hangzhou) region, set yourregion to oss-cn-hangzhou. 
  region: 'yourregion',
  // Security risks may arise if you use the AccessKey pair of an Alibaba Cloud account to access OSS because the account has permissions on all API operations. We recommend that you use a Resource Access Management (RAM) user to call API operations or perform routine operations and maintenance. To create a RAM user, log on to the RAM console. 
  accessKeyId: 'yourAccessKeyId',
  accessKeySecret: 'yourAccessKeySecret',
  // Specify the name of the bucket. 
  bucket: 'examplebucket',

async function put () {
  try {
    // Specify the full paths of the object and the local file. The full path of the OSS object cannot contain bucket names. 
    // If the path of the local file is not specified, the local file is uploaded from the path of the project to which the sample program belongs. 
    const result = await client.put('exampleobject.txt', path.normalize('D:\\localpath\\examplefile.txt'));
  } catch (e) {