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对象存储SDK 参考Rust预签名机制PreSignedURL（Rust SDK）
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问问助手pre_signed_url 接口用于生成带签名的临时上传或下载 URL，本文介绍如何通过 Rust SDK 的 pre_signed_url 接口获取该 URL 并直接访问对象。
注意事项
- 您需要根据实际情况，填写示例代码中的地域和访问域名，详细介绍，请参见 地域和访问域名。
- 为了防止密钥泄露，本文示例代码需要从环境变量中读取 Access Key ID 和 Secret Access Key。因此使用 SDK 前，您需要配置长期访问凭证，详细介绍，请参见 配置长期访问凭证。
- pre_signed_url 有效期由 expires 参数控制，单位秒，最大不超过 7 天。
- 使用 pre_signed_url 上传时，http_method 须与生成时指定的 method 保持一致，否则返回 403。
代码示例
使用预签名的 URL 上传对象
use async_trait::async_trait;
use futures_core::future::BoxFuture;
use std::env;
use std::future::Future;
use std::time::Duration;
use tokio::runtime::Handle;
use ve_tos_rust_sdk::common::init_tracing_log;
use ve_tos_rust_sdk::enumeration::{HttpMethodType};
use ve_tos_rust_sdk::asynchronous::tos;
use ve_tos_rust_sdk::asynchronous::tos::AsyncRuntime;
use ve_tos_rust_sdk::auth::{PreSignedURLInput, SignerAPI};
use reqwest::Client as HttpClient;
use ve_tos_rust_sdk::error::TosError;
#[derive(Debug, Default)]
pub struct TokioRuntime {}
#[async_trait]
impl AsyncRuntime for TokioRuntime {
type JoinError = tokio::task::JoinError;
async fn sleep(&self, duration: Duration) {
tokio::time::sleep(duration).await;
}
fn spawn<'a, F>(&self, future: F) -> BoxFuture<'a, Result<F::Output, Self::JoinError>>
where
F: Future + Send + 'static,
F::Output: Send + 'static,
{
Box::pin(Handle::current().spawn(future))
}
fn block_on<F: Future>(&self, future: F) -> F::Output {
Handle::current().block_on(future)
}
}
#[tokio::main]
async fn main() {
let _guard = init_tracing_log("info", "temp/logs", "app.log");
let ak = env::var("TOS_ACCESS_KEY").unwrap_or("".to_string());
let sk = env::var("TOS_SECRET_KEY").unwrap_or("".to_string());
let endpoint = "https://tos-cn-beijing.volces.com";
let region = "cn-beijing";
let client = tos::builder::<TokioRuntime>()
.connection_timeout(3000)
.request_timeout(10000)
.max_retry_count(3)
.ak(ak)
.sk(sk)
.region(region)
.endpoint(endpoint)
.build().unwrap();
// 1. 使用预签名的URL上传对象
let bucket = "example-bucket";
let key = "test-upload-object.txt";
let mut upload_input = PreSignedURLInput::new_with_key(bucket, key);
upload_input.set_http_method(HttpMethodType::HttpMethodPut);
upload_input.set_expires(3600); // 有效期1小时
let upload_output = client.pre_signed_url(&upload_input);
match upload_output {
Ok(output) => {
println!("Pre-signed URL for upload: {}", output.signed_url());
// 使用reqwest客户端上传对象
let http_client = HttpClient::new();
let upload_response = http_client.put(output.signed_url())
.body("Hello from pre-signed URL upload")
.send()
.await;
match upload_response {
Ok(resp) if resp.status().is_success() => {
println!("Upload successful with status: {}", resp.status());
}
Ok(resp) => {
println!("Upload failed with status: {}", resp.status());
}
Err(e) => {
println!("Upload request error: {}", e);
}
}
}
Err(err) => {
match err {
TosError::TosClientError { message, .. } => {
println!("Client error: {}", message);
}
TosError::TosServerError { request_id, ec, code, .. } => {
println!("Server error: request_id: {}, ec: {}, code: {}", request_id, ec, code);
}
}
}
}
}
使用预签名的 URL 下载对象
use async_trait::async_trait;
use futures_core::future::BoxFuture;
use std::env;
use std::future::Future;
use std::time::Duration;
use tokio::runtime::Handle;
use ve_tos_rust_sdk::common::init_tracing_log;
use ve_tos_rust_sdk::enumeration::{HttpMethodType};
use ve_tos_rust_sdk::asynchronous::tos;
use ve_tos_rust_sdk::asynchronous::tos::AsyncRuntime;
use ve_tos_rust_sdk::auth::{PreSignedURLInput, SignerAPI};
use reqwest::Client as HttpClient;
use ve_tos_rust_sdk::error::TosError;
#[derive(Debug, Default)]
pub struct TokioRuntime {}
#[async_trait]
impl AsyncRuntime for TokioRuntime {
type JoinError = tokio::task::JoinError;
async fn sleep(&self, duration: Duration) {
tokio::time::sleep(duration).await;
}
fn spawn<'a, F>(&self, future: F) -> BoxFuture<'a, Result<F::Output, Self::JoinError>>
where
F: Future + Send + 'static,
F::Output: Send + 'static,
{
Box::pin(Handle::current().spawn(future))
}
fn block_on<F: Future>(&self, future: F) -> F::Output {
Handle::current().block_on(future)
}
}
#[tokio::main]
async fn main() {
let _guard = init_tracing_log("info", "temp/logs", "app.log");
let ak = env::var("TOS_ACCESS_KEY").unwrap_or("".to_string());
let sk = env::var("TOS_SECRET_KEY").unwrap_or("".to_string());
let endpoint = "https://tos-cn-beijing.volces.com";
let region = "cn-beijing";
let client = tos::builder::<TokioRuntime>()
.connection_timeout(3000)
.request_timeout(10000)
.max_retry_count(3)
.ak(ak)
.sk(sk)
.region(region)
.endpoint(endpoint)
.build().unwrap();
// 2. 使用预签名的URL下载对象
let bucket = "example-bucket";
let key = "test-download-object.txt";
let mut download_input = PreSignedURLInput::new_with_key(bucket, key);
download_input.set_http_method(HttpMethodType::HttpMethodGet);
download_input.set_expires(3600);
let download_output = client.pre_signed_url(&download_input);
match download_output {
Ok(output) => {
println!("Pre-signed URL for download: {}", output.signed_url());
// 使用reqwest客户端下载对象
let http_client = HttpClient::new();
let download_response = http_client.get(output.signed_url())
.send()
.await;
match download_response {
Ok(resp) if resp.status().is_success() => {
let content = resp.text().await.unwrap();
println!("Download successful, content: {}", content);
}
Ok(resp) => {
println!("Download failed with status: {}", resp.status());
}
Err(e) => {
println!("Download request error: {}", e);
}
}
}
Err(err) => {
match err {
TosError::TosClientError { message, .. } => {
println!("Client error: {}", message);
}
TosError::TosServerError { request_id, ec, code, .. } => {
println!("Server error: request_id: {}, ec: {}, code: {}", request_id, ec, code);
}
}
}
}
}
使用预签名的 URL 删除对象
use async_trait::async_trait;
use futures_core::future::BoxFuture;
use std::env;
use std::future::Future;
use std::time::Duration;
use tokio::runtime::Handle;
use ve_tos_rust_sdk::common::init_tracing_log;
use ve_tos_rust_sdk::enumeration::{HttpMethodType};
use ve_tos_rust_sdk::asynchronous::tos;
use ve_tos_rust_sdk::asynchronous::tos::AsyncRuntime;
use ve_tos_rust_sdk::auth::{PreSignedURLInput, SignerAPI};
use reqwest::Client as HttpClient;
use ve_tos_rust_sdk::error::TosError;
#[derive(Debug, Default)]
pub struct TokioRuntime {}
#[async_trait]
impl AsyncRuntime for TokioRuntime {
type JoinError = tokio::task::JoinError;
async fn sleep(&self, duration: Duration) {
tokio::time::sleep(duration).await;
}
fn spawn<'a, F>(&self, future: F) -> BoxFuture<'a, Result<F::Output, Self::JoinError>>
where
F: Future + Send + 'static,
F::Output: Send + 'static,
{
Box::pin(Handle::current().spawn(future))
}
fn block_on<F: Future>(&self, future: F) -> F::Output {
Handle::current().block_on(future)
}
}
#[tokio::main]
async fn main() {
let _guard = init_tracing_log("info", "temp/logs", "app.log");
let ak = env::var("TOS_ACCESS_KEY").unwrap_or("".to_string());
let sk = env::var("TOS_SECRET_KEY").unwrap_or("".to_string());
let endpoint = "https://tos-cn-beijing.volces.com";
let region = "cn-beijing";
let client = tos::builder::<TokioRuntime>()
.connection_timeout(3000)
.request_timeout(10000)
.max_retry_count(3)
.ak(ak)
.sk(sk)
.region(region)
.endpoint(endpoint)
.build().unwrap();
// 3. 使用预签名的URL删除对象
let bucket = "example-bucket";
let key = "test-delete-object.txt";
let mut delete_input = PreSignedURLInput::new_with_key(bucket, key);
delete_input.set_http_method(HttpMethodType::HttpMethodDelete);
delete_input.set_expires(3600);
let delete_output = client.pre_signed_url(&delete_input);
match delete_output {
Ok(output) => {
println!("Pre-signed URL for delete: {}", output.signed_url());
// 使用reqwest客户端删除对象
let http_client = HttpClient::new();
let delete_response = http_client.delete(output.signed_url())
.send()
.await;
match delete_response {
Ok(resp) if resp.status().is_success() => {
println!("Delete successful with status: {}", resp.status());
}
Ok(resp) => {
println!("Delete failed with status: {}", resp.status());
}
Err(e) => {
println!("Delete request error: {}", e);
}
}
}
Err(err) => {
match err {
TosError::TosClientError { message, .. } => {
println!("Client error: {}", message);
}
TosError::TosServerError { request_id, ec, code, .. } => {
println!("Server error: request_id: {}, ec: {}, code: {}", request_id, ec, code);
}
}
}
}
}
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最近更新时间：2025.12.22 16:33:48
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