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class="rno-header-crumbs-link-2">API 中心</a><i class="rno-header-crumbs-icon-2">></i><a href="/document/api/849" title="流计算 Oceanus" hotrep="document.article.breadcrumb" class="rno-header-crumbs-link-2">流计算 Oceanus</a><i class="rno-header-crumbs-icon-2">></i><a href="/document/api/849/52011" title="调用方式" hotrep="document.article.breadcrumb" class="rno-header-crumbs-link-2">调用方式</a><i class="rno-header-crumbs-icon-2">></i><span class="rno-header-crumbs-link-2 active">公共参数</span></div></div><div class="J-markdown-box"><div class="rno-title-module J-mainTitle"><h1 class="rno-title-module-title">公共参数</h1><div class="rno-title-module-body"><p class="rno-title-module-date">最近更新时间：<!-- -->2025-01-09 01:23:32</p><div class="rno-title-module-operate"><div class="J-docShareModal rno-title-module-btn share com-share-bubble-trigger c-triangle-align-start com-share-pc m-hidden" hotrep="document.share"><a class="J-docShareToggleBtn com-share-bubble-trigger-link com-opt-link" style="cursor:pointer"><i 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c-bubble c-bubble-top com-share-bubble-msg"><div class="c-bubble-inner"><i class="icon"></i>链接复制成功</div></div></div></li></ul></div></div></div><a class="J-docFavoriteActBtn rno-title-module-btn" style="cursor:pointer"><i class="rno-title-module-fav"></i></a><a class="rno-title-module-btn fav J-myCollection" target="_blank"><span class="rno-title-module-text"><em>我的收藏</em></span></a></div></div></div><div class="rno-document-details-side"><div class="markdown-nav J-navContainer absolute" style="margin-left:0;top:179px"><h2 class="nav-title">本页目录：</h2><ul class="markdown-nav-list J-floatCategory"><li><a href="#.E4.BD.BF.E7.94.A8.E7.AD.BE.E5.90.8D.E6.96.B9.E6.B3.95-v3-.E7.9A.84.E5.85.AC.E5.85.B1.E5.8F.82.E6.95.B0" title="使用签名方法 v3 的公共参数">使用签名方法 v3 的公共参数</a></li><li><a href="#.E4.BD.BF.E7.94.A8.E7.AD.BE.E5.90.8D.E6.96.B9.E6.B3.95-v1-.E7.9A.84.E5.85.AC.E5.85.B1.E5.8F.82.E6.95.B0" title="使用签名方法 v1 的公共参数">使用签名方法 v1 的公共参数</a></li><li><a href="#.E5.9C.B0.E5.9F.9F.E5.88.97.E8.A1.A8" title="地域列表">地域列表</a></li></ul></div></div><div id="docArticleContent" class="doc-article-content"><div class="markdown-text-box"><div class="glossary-product"><p>公共参数是用于标识用户和接口签名的参数，如非必要，在每个接口单独的文档中不再对这些参数进行说明，但每次请求均需要携带这些参数，才能正常发起请求。</p> <p>公共参数的具体内容会因您使用的签名方法版本不同而有所差异。</p> <h2 id=".E4.BD.BF.E7.94.A8.E7.AD.BE.E5.90.8D.E6.96.B9.E6.B3.95-v3-.E7.9A.84.E5.85.AC.E5.85.B1.E5.8F.82.E6.95.B0">使用签名方法 v3 的公共参数</h2><p>签名方法 v3 （有时也称作 TC3-HMAC-SHA256）相比签名方法 v1 （有些文档可能会简称签名方法），更安全，支持更大的请求包，支持 POST JSON 格式，性能有一定提升，推荐使用该签名方法计算签名。完整介绍详见 <a href="/document/api/849/52014">签名方法 v3</a>。</p> <p>注意：出于简化的目的，部分接口文档中的示例使用的是签名方法 v1 GET 请求，而不是更安全的签名方法 v3。</p> <p>使用签名方法 v3 时，公共参数需要统一放到 HTTP Header 请求头部中，如下表所示：</p> <table> <thead> <tr> <th>参数名称</th> <th>类型</th> <th>必选</th> <th>描述</th> </tr> </thead> <tbody><tr> <td>Action</td> <td>String</td> <td>是</td> <td>HTTP 请求头：X-TC-Action。操作的接口名称。取值参考接口文档输入参数章节关于公共参数 Action 的说明。例如云服务器的查询实例列表接口，取值为 DescribeInstances。</td> </tr> <tr> <td>Region</td> <td>String</td> <td>-</td> <td>HTTP 请求头：X-TC-Region。地域参数，用来标识希望操作哪个地域的数据。取值参考接口文档中输入参数章节关于公共参数 Region 的说明。<strong>注意：某些接口不需要传递该参数，接口文档中会对此特别说明，此时即使传递该参数也不会生效。</strong></td> </tr> <tr> <td>Timestamp</td> <td>Integer</td> <td>是</td> <td>HTTP 请求头：X-TC-Timestamp。当前 UNIX 时间戳，可记录发起 API 请求的时间。例如 1529223702。<strong>注意：如果与服务器时间相差超过5分钟，会引起签名过期错误。</strong></td> </tr> <tr> <td>Version</td> <td>String</td> <td>是</td> <td>HTTP 请求头：X-TC-Version。操作的 API 的版本。取值参考接口文档中入参公共参数 Version 的说明。例如云服务器的版本 2017-03-12。</td> </tr> <tr> <td>Authorization</td> <td>String</td> <td>是</td> <td>HTTP 标准身份认证头部字段，例如：<br>TC3-HMAC-SHA256 Credential=AKID<strong>***</strong>/Date/service/tc3_request, SignedHeaders=content-type;host, Signature=fe5f80f77d5fa3beca038a248ff027d0445342fe2855ddc963176630326f1024 <br>其中，<br>- TC3-HMAC-SHA256：签名方法，目前固定取该值；<br>- Credential：签名凭证，AKID<strong>***</strong> 是 SecretId；Date 是 UTC 标准时间的日期，取值需要和公共参数 X-TC-Timestamp 换算的 UTC 标准时间日期一致；service 为具体产品名，通常为域名前缀。例如，域名 cvm.tencentcloudapi.com 意味着产品名是 cvm。本产品取值为 oceanus；tc3_request 为固定字符串；<br>- SignedHeaders：参与签名计算的头部信息，content-type 和 host 为必选头部；<br>- Signature：签名摘要，计算过程详见 <a href="/document/api/849/52014">文档</a>。</td> </tr> <tr> <td>Token</td> <td>String</td> <td>否</td> <td>HTTP 请求头：X-TC-Token。即 <a href="https://cloud.tencent.com/document/product/1312">安全凭证服务</a> 所颁发的临时安全凭证中的 Token，使用时需要将 SecretId 和 SecretKey 的值替换为临时安全凭证中的 TmpSecretId 和 TmpSecretKey。使用长期密钥时不能设置此 Token 字段。</td> </tr> <tr> <td>Language</td> <td>String</td> <td>否</td> <td>HTTP 请求头：X-TC-Language。指定接口返回的语言，仅部分接口支持此参数。取值：zh-CN，en-US。zh-CN 返回中文，en-US 返回英文。</td> </tr> </tbody></table> <p>假设用户想要查询广州地域的云服务器实例列表中的前十个，接口参数设置为偏移量 Offset=0，返回数量 Limit=10，则其请求结构按照请求 URL、请求头部、请求体示例如下:</p> <p>HTTP GET 请求结构示例:</p> <p><pre><code>https://cvm.tencentcloudapi.com/?Limit=10&Offset=0 Authorization: TC3-HMAC-SHA256 Credential=AKID********************************/2018-10-09/cvm/tc3_request, SignedHeaders=content-type;host, Signature=5da7a33f6993f0614b047e5df4582db9e9bf4672ba50567dba16c6ccf174c474 Content-Type: application/x-www-form-urlencoded Host: cvm.tencentcloudapi.com X-TC-Action: DescribeInstances X-TC-Version: 2017-03-12 X-TC-Timestamp: 1539084154 X-TC-Region: ap-guangzhou</code></pre></p> <p>HTTP POST （application/json） 请求结构示例：</p> <p><pre><code>https://cvm.tencentcloudapi.com/ Authorization: TC3-HMAC-SHA256 Credential=AKID********************************/2018-05-30/cvm/tc3_request, SignedHeaders=content-type;host, Signature=582c400e06b5924a6f2b5d7d672d79c15b13162d9279b0855cfba6789a8edb4c Content-Type: application/json Host: cvm.tencentcloudapi.com X-TC-Action: DescribeInstances X-TC-Version: 2017-03-12 X-TC-Timestamp: 1527672334 X-TC-Region: ap-guangzhou {"Offset":0,"Limit":10}</code></pre></p> <p>HTTP POST （multipart/form-data）请求结构示例（仅特定的接口支持）：</p> <p><pre><code>https://cvm.tencentcloudapi.com/ Authorization: TC3-HMAC-SHA256 Credential=AKID********************************/2018-05-30/cvm/tc3_request, SignedHeaders=content-type;host, Signature=582c400e06b5924a6f2b5d7d672d79c15b13162d9279b0855cfba6789a8edb4c Content-Type: multipart/form-data; boundary=58731222010402 Host: cvm.tencentcloudapi.com X-TC-Action: DescribeInstances X-TC-Version: 2017-03-12 X-TC-Timestamp: 1527672334 X-TC-Region: ap-guangzhou --58731222010402 Content-Disposition: form-data; name="Offset" 0 --58731222010402 Content-Disposition: form-data; name="Limit" 10 --58731222010402--</code></pre></p> <h2 id=".E4.BD.BF.E7.94.A8.E7.AD.BE.E5.90.8D.E6.96.B9.E6.B3.95-v1-.E7.9A.84.E5.85.AC.E5.85.B1.E5.8F.82.E6.95.B0">使用签名方法 v1 的公共参数</h2><p>使用签名方法 v1 （有时会称作 HmacSHA256 和 HmacSHA1），公共参数需要统一放到请求串中，完整介绍详见<a href="/document/api/849/52015">文档</a></p> <table> <thead> <tr> <th align="left">参数名称</th> <th align="left">类型</th> <th align="left">必选</th> <th align="left">描述</th> </tr> </thead> <tbody><tr> <td align="left">Action</td> <td align="left">String</td> <td align="left">是</td> <td align="left">操作的接口名称。取值参考接口文档中输入参数章节关于公共参数 Action 的说明。例如云服务器的查询实例列表接口，取值为 DescribeInstances。</td> </tr> <tr> <td align="left">Region</td> <td align="left">String</td> <td align="left">-</td> <td align="left">地域参数，用来标识希望操作哪个地域的数据。接口接受的地域取值参考接口文档中输入参数公共参数 Region 的说明。<strong>注意：某些接口不需要传递该参数，接口文档中会对此特别说明，此时即使传递该参数也不会生效。</strong></td> </tr> <tr> <td align="left">Timestamp</td> <td align="left">Integer</td> <td align="left">是</td> <td align="left">当前 UNIX 时间戳，可记录发起 API 请求的时间。例如1529223702，如果与当前时间相差过大，会引起签名过期错误。</td> </tr> <tr> <td align="left">Nonce</td> <td align="left">Integer</td> <td align="left">是</td> <td align="left">随机正整数，与 Timestamp 联合起来，用于防止重放攻击。</td> </tr> <tr> <td align="left">SecretId</td> <td align="left">String</td> <td align="left">是</td> <td align="left">在 <a href="https://console.cloud.tencent.com/capi">云API密钥</a> 上申请的标识身份的 SecretId，一个 SecretId 对应唯一的 SecretKey ，而 SecretKey 会用来生成请求签名 Signature。</td> </tr> <tr> <td align="left">Signature</td> <td align="left">String</td> <td align="left">是</td> <td align="left">请求签名，用来验证此次请求的合法性，需要用户根据实际的输入参数计算得出。具体计算方法参见 <a href="/document/api/849/52015">文档</a>。</td> </tr> <tr> <td align="left">Version</td> <td align="left">String</td> <td align="left">是</td> <td align="left">操作的 API 的版本。取值参考接口文档中入参公共参数 Version 的说明。例如云服务器的版本 2017-03-12。</td> </tr> <tr> <td align="left">SignatureMethod</td> <td align="left">String</td> <td align="left">否</td> <td align="left">签名方式，目前支持 HmacSHA256 和 HmacSHA1。只有指定此参数为 HmacSHA256 时，才使用 HmacSHA256 算法验证签名，其他情况均使用 HmacSHA1 验证签名。</td> </tr> <tr> <td align="left">Token</td> <td align="left">String</td> <td align="left">否</td> <td align="left">即 <a href="https://cloud.tencent.com/document/product/1312">安全凭证服务</a> 所颁发的临时安全凭证中的 Token，使用时需要将 SecretId 和 SecretKey 的值替换为临时安全凭证中的 TmpSecretId 和 TmpSecretKey。使用长期密钥时不能设置此 Token 字段。</td> </tr> <tr> <td align="left">Language</td> <td align="left">String</td> <td align="left">否</td> <td align="left">指定接口返回的语言，仅部分接口支持此参数。取值：zh-CN，en-US。zh-CN 返回中文，en-US 返回英文。</td> </tr> </tbody></table> <p>假设用户想要查询广州地域的云服务器实例列表，其请求结构按照请求 URL、请求头部、请求体示例如下:</p> <p>HTTP GET 请求结构示例:<br><pre><code>https://cvm.tencentcloudapi.com/?Action=DescribeInstances&Version=2017-03-12&SignatureMethod=HmacSHA256&Timestamp=1527672334&Signature=37ac2f4fde00b0ac9bd9eadeb459b1bbee224158d66e7ae5fcadb70b2d181d02&Region=ap-guangzhou&Nonce=23823223&SecretId=AKID******************************** Host: cvm.tencentcloudapi.com</code></pre></p> <p>HTTP POST 请求结构示例：</p> <p><pre><code>https://cvm.tencentcloudapi.com/ Host: cvm.tencentcloudapi.com Content-Type: application/x-www-form-urlencoded Action=DescribeInstances&Version=2017-03-12&SignatureMethod=HmacSHA256&Timestamp=1527672334&Signature=37ac2f4fde00b0ac9bd9eadeb459b1bbee224158d66e7ae5fcadb70b2d181d02&Region=ap-guangzhou&Nonce=23823223&SecretId=AKID********************************</code></pre></p> <h2 id=".E5.9C.B0.E5.9F.9F.E5.88.97.E8.A1.A8">地域列表</h2><p>本产品所有接口 Region 字段的可选值如下表所示。如果接口不支持该表中的所有地域，则会在接口文档中单独说明。</p> <table> <thead> <tr> <th>地域</th> <th>取值</th> </tr> </thead> <tbody><tr> <td>亚太东南（曼谷）</td> <td>ap-bangkok</td> </tr> <tr> <td>华北地区（北京）</td> <td>ap-beijing</td> </tr> <tr> <td>西南地区（成都）</td> <td>ap-chengdu</td> </tr> <tr> <td>西南地区（重庆）</td> <td>ap-chongqing</td> </tr> <tr> <td>华南地区（广州）</td> <td>ap-guangzhou</td> </tr> <tr> <td>港澳台地区（中国香港）</td> <td>ap-hongkong</td> </tr> <tr> <td>亚太东南（雅加达）</td> <td>ap-jakarta</td> </tr> <tr> <td>华东地区（南京）</td> <td>ap-nanjing</td> </tr> <tr> <td>亚太东北（首尔）</td> <td>ap-seoul</td> </tr> <tr> <td>华东地区（上海）</td> <td>ap-shanghai</td> </tr> <tr> <td>华东地区（上海金融）</td> <td>ap-shanghai-fsi</td> </tr> <tr> <td>华南地区（深圳金融）</td> <td>ap-shenzhen-fsi</td> </tr> <tr> <td>亚太东南（新加坡）</td> <td>ap-singapore</td> </tr> <tr> <td>亚太东北（东京）</td> <td>ap-tokyo</td> </tr> <tr> <td>欧洲地区（法兰克福）</td> <td>eu-frankfurt</td> </tr> <tr> <td>美国东部（弗吉尼亚）</td> <td>na-ashburn</td> </tr> <tr> <td>美国西部（硅谷）</td> <td>na-siliconvalley</td> </tr> <tr> <td>南美地区（圣保罗）</td> <td>sa-saopaulo</td> </tr> </tbody></table> </div></div></div><script 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id=\\\".E4.BD.BF.E7.94.A8.E7.AD.BE.E5.90.8D.E6.96.B9.E6.B3.95-v3-.E7.9A.84.E5.85.AC.E5.85.B1.E5.8F.82.E6.95.B0\\\"\u003e使用签名方法 v3 的公共参数\u003c/h2\u003e\u003cp\u003e签名方法 v3 （有时也称作 TC3-HMAC-SHA256）相比签名方法 v1 （有些文档可能会简称签名方法），更安全，支持更大的请求包，支持 POST JSON 格式，性能有一定提升，推荐使用该签名方法计算签名。完整介绍详见 \u003ca href=\\\"/document/api/849/52014\\\"\u003e签名方法 v3\u003c/a\u003e。\u003c/p\u003e\\n\u003cp\u003e注意：出于简化的目的，部分接口文档中的示例使用的是签名方法 v1 GET 请求，而不是更安全的签名方法 v3。\u003c/p\u003e\\n\u003cp\u003e使用签名方法 v3 时，公共参数需要统一放到 HTTP Header 请求头部中，如下表所示：\u003c/p\u003e\\n\u003ctable\u003e\\n\u003cthead\u003e\\n\u003ctr\u003e\\n\u003cth\u003e参数名称\u003c/th\u003e\\n\u003cth\u003e类型\u003c/th\u003e\\n\u003cth\u003e必选\u003c/th\u003e\\n\u003cth\u003e描述\u003c/th\u003e\\n\u003c/tr\u003e\\n\u003c/thead\u003e\\n\u003ctbody\u003e\u003ctr\u003e\\n\u003ctd\u003eAction\u003c/td\u003e\\n\u003ctd\u003eString\u003c/td\u003e\\n\u003ctd\u003e是\u003c/td\u003e\\n\u003ctd\u003eHTTP 请求头：X-TC-Action。操作的接口名称。取值参考接口文档输入参数章节关于公共参数 Action 的说明。例如云服务器的查询实例列表接口，取值为 DescribeInstances。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003eRegion\u003c/td\u003e\\n\u003ctd\u003eString\u003c/td\u003e\\n\u003ctd\u003e-\u003c/td\u003e\\n\u003ctd\u003eHTTP 请求头：X-TC-Region。地域参数，用来标识希望操作哪个地域的数据。取值参考接口文档中输入参数章节关于公共参数 Region 的说明。\u003cstrong\u003e注意：某些接口不需要传递该参数，接口文档中会对此特别说明，此时即使传递该参数也不会生效。\u003c/strong\u003e\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003eTimestamp\u003c/td\u003e\\n\u003ctd\u003eInteger\u003c/td\u003e\\n\u003ctd\u003e是\u003c/td\u003e\\n\u003ctd\u003eHTTP 请求头：X-TC-Timestamp。当前 UNIX 时间戳，可记录发起 API 请求的时间。例如 1529223702。\u003cstrong\u003e注意：如果与服务器时间相差超过5分钟，会引起签名过期错误。\u003c/strong\u003e\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003eVersion\u003c/td\u003e\\n\u003ctd\u003eString\u003c/td\u003e\\n\u003ctd\u003e是\u003c/td\u003e\\n\u003ctd\u003eHTTP 请求头：X-TC-Version。操作的 API 的版本。取值参考接口文档中入参公共参数 Version 的说明。例如云服务器的版本 2017-03-12。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003eAuthorization\u003c/td\u003e\\n\u003ctd\u003eString\u003c/td\u003e\\n\u003ctd\u003e是\u003c/td\u003e\\n\u003ctd\u003eHTTP 标准身份认证头部字段，例如：\u003cbr\u003eTC3-HMAC-SHA256 Credential=AKID\u003cstrong\u003e***\u003c/strong\u003e/Date/service/tc3_request, SignedHeaders=content-type;host, Signature=fe5f80f77d5fa3beca038a248ff027d0445342fe2855ddc963176630326f1024 \u003cbr\u003e其中，\u003cbr\u003e- TC3-HMAC-SHA256：签名方法，目前固定取该值；\u003cbr\u003e- Credential：签名凭证，AKID\u003cstrong\u003e***\u003c/strong\u003e 是 SecretId；Date 是 UTC 标准时间的日期，取值需要和公共参数 X-TC-Timestamp 换算的 UTC 标准时间日期一致；service 为具体产品名，通常为域名前缀。例如，域名 cvm.tencentcloudapi.com 意味着产品名是 cvm。本产品取值为 oceanus；tc3_request 为固定字符串；\u003cbr\u003e- SignedHeaders：参与签名计算的头部信息，content-type 和 host 为必选头部；\u003cbr\u003e- Signature：签名摘要，计算过程详见 \u003ca href=\\\"/document/api/849/52014\\\"\u003e文档\u003c/a\u003e。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003eToken\u003c/td\u003e\\n\u003ctd\u003eString\u003c/td\u003e\\n\u003ctd\u003e否\u003c/td\u003e\\n\u003ctd\u003eHTTP 请求头：X-TC-Token。即 \u003ca href=\\\"https://cloud.tencent.com/document/product/1312\\\"\u003e安全凭证服务\u003c/a\u003e 所颁发的临时安全凭证中的 Token，使用时需要将 SecretId 和 SecretKey 的值替换为临时安全凭证中的 TmpSecretId 和 TmpSecretKey。使用长期密钥时不能设置此 Token 字段。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003eLanguage\u003c/td\u003e\\n\u003ctd\u003eString\u003c/td\u003e\\n\u003ctd\u003e否\u003c/td\u003e\\n\u003ctd\u003eHTTP 请求头：X-TC-Language。指定接口返回的语言，仅部分接口支持此参数。取值：zh-CN，en-US。zh-CN 返回中文，en-US 返回英文。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003c/tbody\u003e\u003c/table\u003e\\n\u003cp\u003e假设用户想要查询广州地域的云服务器实例列表中的前十个，接口参数设置为偏移量 Offset=0，返回数量 Limit=10，则其请求结构按照请求 URL、请求头部、请求体示例如下:\u003c/p\u003e\\n\u003cp\u003eHTTP GET 请求结构示例:\u003c/p\u003e\\n\u003cp\u003e\u003cpre\u003e\u003ccode\u003ehttps://cvm.tencentcloudapi.com/?Limit=10\u0026amp;Offset=0\\n\\nAuthorization: TC3-HMAC-SHA256 Credential=AKID********************************/2018-10-09/cvm/tc3_request, SignedHeaders=content-type;host, Signature=5da7a33f6993f0614b047e5df4582db9e9bf4672ba50567dba16c6ccf174c474\\nContent-Type: application/x-www-form-urlencoded\\nHost: cvm.tencentcloudapi.com\\nX-TC-Action: DescribeInstances\\nX-TC-Version: 2017-03-12\\nX-TC-Timestamp: 1539084154\\nX-TC-Region: ap-guangzhou\u003c/code\u003e\u003c/pre\u003e\u003c/p\u003e\\n\u003cp\u003eHTTP POST （application/json） 请求结构示例：\u003c/p\u003e\\n\u003cp\u003e\u003cpre\u003e\u003ccode\u003ehttps://cvm.tencentcloudapi.com/\\n\\nAuthorization: TC3-HMAC-SHA256 Credential=AKID********************************/2018-05-30/cvm/tc3_request, SignedHeaders=content-type;host, Signature=582c400e06b5924a6f2b5d7d672d79c15b13162d9279b0855cfba6789a8edb4c\\nContent-Type: application/json\\nHost: cvm.tencentcloudapi.com\\nX-TC-Action: DescribeInstances\\nX-TC-Version: 2017-03-12\\nX-TC-Timestamp: 1527672334\\nX-TC-Region: ap-guangzhou\\n\\n{\u0026quot;Offset\u0026quot;:0,\u0026quot;Limit\u0026quot;:10}\u003c/code\u003e\u003c/pre\u003e\u003c/p\u003e\\n\u003cp\u003eHTTP POST （multipart/form-data）请求结构示例（仅特定的接口支持）：\u003c/p\u003e\\n\u003cp\u003e\u003cpre\u003e\u003ccode\u003ehttps://cvm.tencentcloudapi.com/\\n\\nAuthorization: TC3-HMAC-SHA256 Credential=AKID********************************/2018-05-30/cvm/tc3_request, SignedHeaders=content-type;host, Signature=582c400e06b5924a6f2b5d7d672d79c15b13162d9279b0855cfba6789a8edb4c\\nContent-Type: multipart/form-data; boundary=58731222010402\\nHost: cvm.tencentcloudapi.com\\nX-TC-Action: DescribeInstances\\nX-TC-Version: 2017-03-12\\nX-TC-Timestamp: 1527672334\\nX-TC-Region: ap-guangzhou\\n\\n--58731222010402\\nContent-Disposition: form-data; name=\u0026quot;Offset\u0026quot;\\n\\n0\\n--58731222010402\\nContent-Disposition: form-data; name=\u0026quot;Limit\u0026quot;\\n\\n10\\n--58731222010402--\u003c/code\u003e\u003c/pre\u003e\u003c/p\u003e\\n\u003ch2 id=\\\".E4.BD.BF.E7.94.A8.E7.AD.BE.E5.90.8D.E6.96.B9.E6.B3.95-v1-.E7.9A.84.E5.85.AC.E5.85.B1.E5.8F.82.E6.95.B0\\\"\u003e使用签名方法 v1 的公共参数\u003c/h2\u003e\u003cp\u003e使用签名方法 v1 （有时会称作 HmacSHA256 和 HmacSHA1），公共参数需要统一放到请求串中，完整介绍详见\u003ca href=\\\"/document/api/849/52015\\\"\u003e文档\u003c/a\u003e\u003c/p\u003e\\n\u003ctable\u003e\\n\u003cthead\u003e\\n\u003ctr\u003e\\n\u003cth align=\\\"left\\\"\u003e参数名称\u003c/th\u003e\\n\u003cth align=\\\"left\\\"\u003e类型\u003c/th\u003e\\n\u003cth align=\\\"left\\\"\u003e必选\u003c/th\u003e\\n\u003cth align=\\\"left\\\"\u003e描述\u003c/th\u003e\\n\u003c/tr\u003e\\n\u003c/thead\u003e\\n\u003ctbody\u003e\u003ctr\u003e\\n\u003ctd align=\\\"left\\\"\u003eAction\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003eString\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e是\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e操作的接口名称。取值参考接口文档中输入参数章节关于公共参数 Action 的说明。例如云服务器的查询实例列表接口，取值为 DescribeInstances。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd align=\\\"left\\\"\u003eRegion\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003eString\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e-\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e地域参数，用来标识希望操作哪个地域的数据。接口接受的地域取值参考接口文档中输入参数公共参数 Region 的说明。\u003cstrong\u003e注意：某些接口不需要传递该参数，接口文档中会对此特别说明，此时即使传递该参数也不会生效。\u003c/strong\u003e\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd align=\\\"left\\\"\u003eTimestamp\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003eInteger\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e是\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e当前 UNIX 时间戳，可记录发起 API 请求的时间。例如1529223702，如果与当前时间相差过大，会引起签名过期错误。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd align=\\\"left\\\"\u003eNonce\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003eInteger\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e是\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e随机正整数，与 Timestamp 联合起来，用于防止重放攻击。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd align=\\\"left\\\"\u003eSecretId\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003eString\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e是\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e在 \u003ca href=\\\"https://console.cloud.tencent.com/capi\\\"\u003e云API密钥\u003c/a\u003e 上申请的标识身份的 SecretId，一个 SecretId 对应唯一的 SecretKey ，而 SecretKey 会用来生成请求签名 Signature。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd align=\\\"left\\\"\u003eSignature\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003eString\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e是\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e请求签名，用来验证此次请求的合法性，需要用户根据实际的输入参数计算得出。具体计算方法参见 \u003ca href=\\\"/document/api/849/52015\\\"\u003e文档\u003c/a\u003e。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd align=\\\"left\\\"\u003eVersion\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003eString\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e是\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e操作的 API 的版本。取值参考接口文档中入参公共参数 Version 的说明。例如云服务器的版本 2017-03-12。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd align=\\\"left\\\"\u003eSignatureMethod\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003eString\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e否\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e签名方式，目前支持 HmacSHA256 和 HmacSHA1。只有指定此参数为 HmacSHA256 时，才使用 HmacSHA256 算法验证签名，其他情况均使用 HmacSHA1 验证签名。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd align=\\\"left\\\"\u003eToken\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003eString\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e否\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e即 \u003ca href=\\\"https://cloud.tencent.com/document/product/1312\\\"\u003e安全凭证服务\u003c/a\u003e 所颁发的临时安全凭证中的 Token，使用时需要将 SecretId 和 SecretKey 的值替换为临时安全凭证中的 TmpSecretId 和 TmpSecretKey。使用长期密钥时不能设置此 Token 字段。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd align=\\\"left\\\"\u003eLanguage\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003eString\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e否\u003c/td\u003e\\n\u003ctd align=\\\"left\\\"\u003e指定接口返回的语言，仅部分接口支持此参数。取值：zh-CN，en-US。zh-CN 返回中文，en-US 返回英文。\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003c/tbody\u003e\u003c/table\u003e\\n\u003cp\u003e假设用户想要查询广州地域的云服务器实例列表，其请求结构按照请求 URL、请求头部、请求体示例如下:\u003c/p\u003e\\n\u003cp\u003eHTTP GET 请求结构示例:\u003cbr\u003e\u003cpre\u003e\u003ccode\u003ehttps://cvm.tencentcloudapi.com/?Action=DescribeInstances\u0026amp;Version=2017-03-12\u0026amp;SignatureMethod=HmacSHA256\u0026amp;Timestamp=1527672334\u0026amp;Signature=37ac2f4fde00b0ac9bd9eadeb459b1bbee224158d66e7ae5fcadb70b2d181d02\u0026amp;Region=ap-guangzhou\u0026amp;Nonce=23823223\u0026amp;SecretId=AKID********************************\\n\\nHost: cvm.tencentcloudapi.com\u003c/code\u003e\u003c/pre\u003e\u003c/p\u003e\\n\u003cp\u003eHTTP POST 请求结构示例：\u003c/p\u003e\\n\u003cp\u003e\u003cpre\u003e\u003ccode\u003ehttps://cvm.tencentcloudapi.com/\\n\\nHost: cvm.tencentcloudapi.com\\nContent-Type: application/x-www-form-urlencoded\\n\\nAction=DescribeInstances\u0026amp;Version=2017-03-12\u0026amp;SignatureMethod=HmacSHA256\u0026amp;Timestamp=1527672334\u0026amp;Signature=37ac2f4fde00b0ac9bd9eadeb459b1bbee224158d66e7ae5fcadb70b2d181d02\u0026amp;Region=ap-guangzhou\u0026amp;Nonce=23823223\u0026amp;SecretId=AKID********************************\u003c/code\u003e\u003c/pre\u003e\u003c/p\u003e\\n\u003ch2 id=\\\".E5.9C.B0.E5.9F.9F.E5.88.97.E8.A1.A8\\\"\u003e地域列表\u003c/h2\u003e\u003cp\u003e本产品所有接口 Region 字段的可选值如下表所示。如果接口不支持该表中的所有地域，则会在接口文档中单独说明。\u003c/p\u003e\\n\u003ctable\u003e\\n\u003cthead\u003e\\n\u003ctr\u003e\\n\u003cth\u003e地域\u003c/th\u003e\\n\u003cth\u003e取值\u003c/th\u003e\\n\u003c/tr\u003e\\n\u003c/thead\u003e\\n\u003ctbody\u003e\u003ctr\u003e\\n\u003ctd\u003e亚太东南（曼谷）\u003c/td\u003e\\n\u003ctd\u003eap-bangkok\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e华北地区（北京）\u003c/td\u003e\\n\u003ctd\u003eap-beijing\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e西南地区（成都）\u003c/td\u003e\\n\u003ctd\u003eap-chengdu\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e西南地区（重庆）\u003c/td\u003e\\n\u003ctd\u003eap-chongqing\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e华南地区（广州）\u003c/td\u003e\\n\u003ctd\u003eap-guangzhou\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e港澳台地区（中国香港）\u003c/td\u003e\\n\u003ctd\u003eap-hongkong\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e亚太东南（雅加达）\u003c/td\u003e\\n\u003ctd\u003eap-jakarta\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e华东地区（南京）\u003c/td\u003e\\n\u003ctd\u003eap-nanjing\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e亚太东北（首尔）\u003c/td\u003e\\n\u003ctd\u003eap-seoul\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e华东地区（上海）\u003c/td\u003e\\n\u003ctd\u003eap-shanghai\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e华东地区（上海金融）\u003c/td\u003e\\n\u003ctd\u003eap-shanghai-fsi\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e华南地区（深圳金融）\u003c/td\u003e\\n\u003ctd\u003eap-shenzhen-fsi\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e亚太东南（新加坡）\u003c/td\u003e\\n\u003ctd\u003eap-singapore\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e亚太东北（东京）\u003c/td\u003e\\n\u003ctd\u003eap-tokyo\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e欧洲地区（法兰克福）\u003c/td\u003e\\n\u003ctd\u003eeu-frankfurt\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e美国东部（弗吉尼亚）\u003c/td\u003e\\n\u003ctd\u003ena-ashburn\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e美国西部（硅谷）\u003c/td\u003e\\n\u003ctd\u003ena-siliconvalley\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003ctr\u003e\\n\u003ctd\u003e南美地区（圣保罗）\u003c/td\u003e\\n\u003ctd\u003esa-saopaulo\u003c/td\u003e\\n\u003c/tr\u003e\\n\u003c/tbody\u003e\u003c/table\u003e\\n\",\"showToc\":true,\"toc\":\"\u003cli\u003e\u003ca href=\\\"#.E4.BD.BF.E7.94.A8.E7.AD.BE.E5.90.8D.E6.96.B9.E6.B3.95-v3-.E7.9A.84.E5.85.AC.E5.85.B1.E5.8F.82.E6.95.B0\\\" title=\\\"使用签名方法 v3 的公共参数\\\"\u003e使用签名方法 v3 的公共参数\u003c/a\u003e\u003c/li\u003e\u003cli\u003e\u003ca href=\\\"#.E4.BD.BF.E7.94.A8.E7.AD.BE.E5.90.8D.E6.96.B9.E6.B3.95-v1-.E7.9A.84.E5.85.AC.E5.85.B1.E5.8F.82.E6.95.B0\\\" title=\\\"使用签名方法 v1 的公共参数\\\"\u003e使用签名方法 v1 的公共参数\u003c/a\u003e\u003c/li\u003e\u003cli\u003e\u003ca href=\\\"#.E5.9C.B0.E5.9F.9F.E5.88.97.E8.A1.A8\\\" title=\\\"地域列表\\\"\u003e地域列表\u003c/a\u003e\u003c/li\u003e\",\"recentReleaseTime\":\"2025-01-09 01:23:32\",\"videoConfig\":{},\"writeUrl\":null,\"isSlate\":false,\"writeNodeId\":\"\",\"displayEditEntry\":false,\"slate\":\"\"},\"relationConfig\":{},\"shareConfig\":{},\"advanced\":{}},\"relatedHotArticleList\":[]},\"staticContext\":{\"isMobile\":false,\"isMiniProgram\":false,\"isWechat\":false,\"isPreview\":false,\"originalUrl\":\"/document/api/849/52013\",\"CDN_DOMAIN\":\"cloudcache.tencent-cloud.com\",\"QCLOUD_DOMAIN\":\"cloud.tencent.com\",\"isLegalReferer\":true,\"ssrInfo\":{},\"language\":\"zh\",\"requestId\":\"iBsYt_AkW1\"}},\"0-0\":null},\"actionData\":null,\"errors\":null}");</script></div><script>window.isServerContext = false; window.isClientContext = true; window.$serverTime = 1740488255236; window.$clientTime = 1740488255236;</script><script> window.CDN_DOMAIN = 'cloudcache.tencent-cloud.com'; window.QCLOUD_DOMAIN = 'cloud.tencent.com'; window.language = 'zh'; window.ssrError = undefined </script><script 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