Object Storage Service:Use a presigned URL to upload a file

curl -X PUT \
     -H "Content-Type: text/plain;charset=utf8" \
     -H "x-oss-storage-class: Standard" \
     -H "x-oss-meta-key1: value1" \
     -H "x-oss-meta-key2: value2" \
     -T "C:\\Users\\demo.txt" \
     "https://examplebucket.oss-cn-hangzhou.aliyuncs.com/exampleobject.txt?x-oss-date=20241112T083238Z&x-oss-expires=3599&x-oss-signature-version=OSS4-HMAC-SHA256&x-oss-credential=LTAI****************%2F20241112%2Fcn-hangzhou%2Foss%2Faliyun_v4_request&x-oss-signature=ed5a******************************************************"

import com.aliyun.oss.internal.OSSHeaders;
import com.aliyun.oss.model.StorageClass;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.entity.FileEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import java.io.*;
import java.net.URL;
import java.util.*;

public class SignUrlUpload {
    public static void main(String[] args) throws Throwable {
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;

        // Replace <signedUrl> with the presigned URL.
        URL signedUrl = new URL("<signedUrl>");

        // Specify the full path of the local file to upload.
        String pathName = "C:\\Users\\demo.txt";

        // Specify request headers. Values must match those used when generating the URL.
        Map<String, String> headers = new HashMap<String, String>();
        headers.put(OSSHeaders.STORAGE_CLASS, StorageClass.Standard.toString());
        headers.put(OSSHeaders.CONTENT_TYPE, "text/plain;charset=utf8");

        // Specify user metadata. Values must match those used when generating the URL.
        Map<String, String> userMetadata = new HashMap<String, String>();
        userMetadata.put("key1", "value1");
        userMetadata.put("key2", "value2");

        try {
            HttpPut put = new HttpPut(signedUrl.toString());
            System.out.println(put);
            HttpEntity entity = new FileEntity(new File(pathName));
            put.setEntity(entity);

            // Add request headers. If these headers were included when generating the URL,
            // they must be sent here. Mismatched headers cause a signature error.
            for (Map.Entry header : headers.entrySet()) {
                put.addHeader(header.getKey().toString(), header.getValue().toString());
            }
            // If user metadata is specified, the SDK adds the "x-oss-meta-" prefix to the key.
            // When using other HTTP clients, add this prefix manually.
            for (Map.Entry meta : userMetadata.entrySet()) {
                put.addHeader("x-oss-meta-" + meta.getKey().toString(), meta.getValue().toString());
            }

            httpClient = HttpClients.createDefault();
            response = httpClient.execute(put);

            System.out.println("Status code of the upload: " + response.getStatusLine().getStatusCode());
            if (response.getStatusLine().getStatusCode() == 200) {
                System.out.println("The object is uploaded by using the library.");
            }
            System.out.println(response.toString());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            response.close();
            httpClient.close();
        }
    }
}

package main

import (
	"bytes"
	"fmt"
	"io/ioutil"
	"net/http"
	"os"
)

func uploadFile(signedUrl string, filePath string, headers map[string]string, metadata map[string]string) error {
	file, err := os.Open(filePath)
	if err != nil {
		return err
	}
	defer file.Close()

	fileBytes, err := ioutil.ReadAll(file)
	if err != nil {
		return err
	}

	req, err := http.NewRequest("PUT", signedUrl, bytes.NewBuffer(fileBytes))
	if err != nil {
		return err
	}

	// Add request headers. Values must match those used when generating the URL.
	for key, value := range headers {
		req.Header.Set(key, value)
	}

	// Add user metadata with the "x-oss-meta-" prefix.
	for key, value := range metadata {
		req.Header.Set(fmt.Sprintf("x-oss-meta-%s", key), value)
	}

	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	fmt.Printf("Status code: %d\n", resp.StatusCode)
	if resp.StatusCode == 200 {
		fmt.Println("The object is uploaded by using the library.")
	} else {
		fmt.Println("Upload failed")
	}
	body, _ := ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))

	return nil
}

func main() {
	// Replace <signedUrl> with the presigned URL.
	signedUrl := "<signedUrl>"

	// Specify the full path of the local file to upload.
	filePath := "C:\\Users\\demo.txt"

	// Request headers. Values must match those used when generating the URL.
	headers := map[string]string{
		"Content-Type":        "text/plain;charset=utf8",
		"x-oss-storage-class": "Standard",
	}

	// User metadata. Values must match those used when generating the URL.
	metadata := map[string]string{
		"key1": "value1",
		"key2": "value2",
	}

	err := uploadFile(signedUrl, filePath, headers, metadata)
	if err != nil {
		fmt.Printf("An error occurred: %v\n", err)
	}
}

import requests

def upload_file(signed_url, file_path, headers=None, metadata=None):
    """
    Upload an object to OSS using a presigned URL.

    :param signed_url: The presigned URL.
    :param file_path: The full path of the local file to upload.
    :param headers: Request headers. Optional.
    :param metadata: User metadata. Optional.
    """
    if not headers:
        headers = {}
    if not metadata:
        metadata = {}

    # Add the x-oss-meta- prefix to metadata keys.
    for key, value in metadata.items():
        headers[f'x-oss-meta-{key}'] = value

    try:
        with open(file_path, 'rb') as file:
            response = requests.put(signed_url, data=file, headers=headers)
            print(f"Status code: {response.status_code}")
            if response.status_code == 200:
                print("The object is uploaded by using the library.")
            else:
                print("Upload failed.")
            print(response.text)
    except Exception as e:
        print(f"An error occurred: {e}")

if __name__ == "__main__":
    # Replace <signedUrl> with the presigned URL.
    signed_url = "<signedUrl>"

    # Specify the full path of the local file to upload.
    file_path = "C:\\Users\\demo.txt"

    # Request headers. Values must match those used when generating the URL.
    headers = {
        "Content-Type": "text/plain;charset=utf8",
        "x-oss-storage-class": "Standard"
    }

    # User metadata. Values must match those used when generating the URL.
    metadata = {
        "key1": "value1",
        "key2": "value2"
    }

    upload_file(signed_url, file_path, headers, metadata)

const fs = require('fs');
const axios = require('axios');

async function uploadFile(signedUrl, filePath, headers = {}, metadata = {}) {
    try {
        // Add the x-oss-meta- prefix to metadata keys.
        for (const [key, value] of Object.entries(metadata)) {
            headers[`x-oss-meta-${key}`] = value;
        }

        const fileStream = fs.createReadStream(filePath);

        const response = await axios.put(signedUrl, fileStream, {
            headers: headers
        });

        console.log(`Status code: ${response.status}`);
        if (response.status === 200) {
            console.log("The object is uploaded by using the library.");
        } else {
            console.log("Upload failed.");
        }
        console.log(response.data);
    } catch (error) {
        console.error(`An error occurred: ${error.message}`);
    }
}

(async () => {
    // Replace <signedUrl> with the presigned URL.
    const signedUrl = "<signedUrl>";

    // Specify the full path of the local file to upload.
    const filePath = "C:\\Users\\demo.txt";

    // Request headers. Values must match those used when generating the URL.
    const headers = {
        "Content-Type": "text/plain;charset=utf8",
        "x-oss-storage-class": "Standard"
    };

    // User metadata. Values must match those used when generating the URL.
    const metadata = {
        "key1": "value1",
        "key2": "value2"
    };

    await uploadFile(signedUrl, filePath, headers, metadata);
})();

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>File Upload Example</title>
</head>
<body>
    <h1>File Upload Example</h1>

    <input type="file" id="fileInput" />
    <button id="uploadButton">Upload File</button>

    <script>
        // Replace <signedUrl> with the actual presigned URL.
        const signedUrl = "<signedUrl>";

        document.getElementById('uploadButton').addEventListener('click', async () => {
            const fileInput = document.getElementById('fileInput');
            const file = fileInput.files[0];

            if (file) {
                try {
                    await upload(file, signedUrl);
                } catch (error) {
                    console.error('Error during upload:', error);
                    alert('Upload failed: ' + error.message);
                }
            } else {
                alert('Please select a file to upload.');
            }
        });

        const upload = async (file, presignedUrl) => {
            const headers = {
                "Content-Type": "text/plain;charset=utf8",
                'x-oss-storage-class': 'Standard',
                'x-oss-meta-key1': 'value1',
                'x-oss-meta-key2': 'value2'
            };

            const response = await fetch(presignedUrl, {
                method: 'PUT',
                headers: headers,
                body: file
            });

            if (!response.ok) {
                throw new Error(`Upload failed, status: ${response.status}`);
            }

            alert('File uploaded successfully');
            console.log('File uploaded successfully');
        };
    </script>
</body>
</html>

using System.Net.Http.Headers;

// Specify the full path of the local file to upload.
var filePath = "C:\\Users\\demo.txt";
// Replace <signedUrl> with the presigned URL.
var presignedUrl = "<signedUrl>";

using var httpClient = new HttpClient();
using var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
using var content = new StreamContent(fileStream);

var request = new HttpRequestMessage(HttpMethod.Put, presignedUrl);
request.Content = content;

// Add request headers. Values must match those used when generating the URL.
request.Content.Headers.ContentType = new MediaTypeHeaderValue("text/plain") { CharSet = "utf8" };
request.Content.Headers.Add("x-oss-meta-key1", "value1");
request.Content.Headers.Add("x-oss-meta-key2", "value2");
request.Content.Headers.Add("x-oss-storage-class", "Standard");

// Output the request headers.
Console.WriteLine("Request header:");
foreach (var header in request.Content.Headers)
{
    Console.WriteLine($"{header.Key}: {string.Join(", ", header.Value)}");
}

var response = await httpClient.SendAsync(request);

if (response.IsSuccessStatusCode)
{
    Console.WriteLine($"Uploaded! Status Code: {response.StatusCode}");
    Console.WriteLine("Response Header:");
    foreach (var header in response.Headers)
    {
        Console.WriteLine($"{header.Key}: {string.Join(", ", header.Value)}");
    }
}
else
{
    string responseContent = await response.Content.ReadAsStringAsync();
    Console.WriteLine($"Upload failed! Status Code: {response.StatusCode}");
    Console.WriteLine("Response Content: " + responseContent);
}

#include <iostream>
#include <fstream>
#include <curl/curl.h>
#include <map>
#include <string>

// Callback to process the HTTP response body.
size_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* output) {
    size_t totalSize = size * nmemb;
    output->append((char*)contents, totalSize);
    return totalSize;
}

void uploadFile(const std::string& signedUrl, const std::string& filePath, const std::map<std::string, std::string>& headers, const std::map<std::string, std::string>& metadata) {
    CURL* curl;
    CURLcode res;
    std::string readBuffer;

    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();

    if (curl) {
        curl_easy_setopt(curl, CURLOPT_URL, signedUrl.c_str());
        curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);

        FILE* file = fopen(filePath.c_str(), "rb");
        if (!file) {
            std::cerr << "Unable to open the file: " << filePath << std::endl;
            return;
        }

        fseek(file, 0, SEEK_END);
        long fileSize = ftell(file);
        rewind(file);

        curl_easy_setopt(curl, CURLOPT_READDATA, file);
        curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, (curl_off_t)fileSize);

        // Add request headers. Values must match those used when generating the URL.
        struct curl_slist* chunk = nullptr;
        for (const auto& header : headers) {
            std::string headerStr = header.first + ": " + header.second;
            chunk = curl_slist_append(chunk, headerStr.c_str());
        }
        // Add user metadata with the "x-oss-meta-" prefix.
        for (const auto& meta : metadata) {
            std::string metaStr = "x-oss-meta-" + meta.first + ": " + meta.second;
            chunk = curl_slist_append(chunk, metaStr.c_str());
        }
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, chunk);

        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);

        res = curl_easy_perform(curl);

        if (res != CURLE_OK) {
            std::cerr << "curl_easy_perform() failed: " << curl_easy_strerror(res) << std::endl;
        } else {
            long responseCode;
            curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &responseCode);
            std::cout << "Status code: " << responseCode << std::endl;
            if (responseCode == 200) {
                std::cout << "The object is uploaded by using the network library." << std::endl;
            } else {
                std::cout << "Upload failed." << std::endl;
            }
            std::cout << readBuffer << std::endl;
        }

        fclose(file);
        curl_slist_free_all(chunk);
        curl_easy_cleanup(curl);
    }

    curl_global_cleanup();
}

int main() {
    // Replace <signedUrl> with the presigned URL.
    std::string signedUrl = "<signedUrl>";

    // Specify the full path of the local file to upload.
    std::string filePath = "C:\\Users\\demo.txt";

    // Request headers. Values must match those used when generating the URL.
    std::map<std::string, std::string> headers = {
        {"Content-Type", "text/plain;charset=utf8"},
        {"x-oss-storage-class", "Standard"}
    };

    // User metadata. Values must match those used when generating the URL.
    std::map<std::string, std::string> metadata = {
        {"key1", "value1"},
        {"key2", "value2"}
    };

    uploadFile(signedUrl, filePath, headers, metadata);

    return 0;
}

import android.os.AsyncTask;
import android.util.Log;

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

public class SignUrlUploadActivity extends AppCompatActivity {

    private static final String TAG = "SignUrlUploadActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Replace <signedUrl> with the presigned URL.
        String signedUrl = "<signedUrl>";

        // Specify the full path of the local file to upload.
        String pathName = "/storage/emulated/0/demo.txt";

        // Request headers. Values must match those used when generating the URL.
        Map<String, String> headers = new HashMap<>();
        headers.put("Content-Type", "text/plain;charset=utf8");
        headers.put("x-oss-storage-class", "Standard");

        // User metadata. Values must match those used when generating the URL.
        Map<String, String> userMetadata = new HashMap<>();
        userMetadata.put("key1", "value1");
        userMetadata.put("key2", "value2");

        new UploadTask().execute(signedUrl, pathName, headers, userMetadata);
    }

    private class UploadTask extends AsyncTask<Object, Void, Integer> {
        @Override
        protected Integer doInBackground(Object... params) {
            String signedUrl = (String) params[0];
            String pathName = (String) params[1];
            Map<String, String> headers = (Map<String, String>) params[2];
            Map<String, String> userMetadata = (Map<String, String>) params[3];

            try {
                URL url = new URL(signedUrl);
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                connection.setRequestMethod("PUT");
                connection.setDoOutput(true);
                connection.setUseCaches(false);

                // Add request headers.
                for (Entry<String, String> header : headers.entrySet()) {
                    connection.setRequestProperty(header.getKey(), header.getValue());
                }

                // Add user metadata with the "x-oss-meta-" prefix.
                for (Entry<String, String> meta : userMetadata.entrySet()) {
                    connection.setRequestProperty("x-oss-meta-" + meta.getKey(), meta.getValue());
                }

                File file = new File(pathName);
                FileInputStream fileInputStream = new FileInputStream(file);
                DataOutputStream dos = new DataOutputStream(connection.getOutputStream());

                byte[] buffer = new byte[1024];
                int count;
                while ((count = fileInputStream.read(buffer)) != -1) {
                    dos.write(buffer, 0, count);
                }

                fileInputStream.close();
                dos.flush();
                dos.close();

                int responseCode = connection.getResponseCode();
                Log.d(TAG, "Status code: " + responseCode);
                if (responseCode == 200) {
                    Log.d(TAG, "The object is uploaded by using the library.");
                } else {
                    Log.d(TAG, "Upload failed");
                }

                InputStream is = connection.getInputStream();
                byte[] responseBuffer = new byte[1024];
                StringBuilder responseStringBuilder = new StringBuilder();
                while ((count = is.read(responseBuffer)) != -1) {
                    responseStringBuilder.append(new String(responseBuffer, 0, count));
                }
                Log.d(TAG, responseStringBuilder.toString());

                return responseCode;
            } catch (IOException e) {
                e.printStackTrace();
                return -1;
            }
        }

        @Override
        protected void onPostExecute(Integer result) {
            super.onPostExecute(result);
            if (result == 200) {
                Toast.makeText(SignUrlUploadActivity.this, "Object uploaded", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(SignUrlUploadActivity.this, "Upload failed", Toast.LENGTH_SHORT).show();
            }
        }
    }
}