Go 1.11 已达到支持终止期限,将于 2026 年 1 月 31 日
弃用。弃用后,您将无法部署 Go 1.11 应用,即使您的组织之前曾使用组织政策重新启用旧版运行时的部署也是如此。现有的 Go 1.11 应用在
弃用日期之后将继续运行并接收流量。我们建议您
迁移到最新支持的 Go 版本。
读取和写入临时文件
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
建议您使用 Cloud Storage 在 App Engine 中读取和写入文件,但是,如果您的应用只需要写入临时文件,则可以使用标准 Go 1.11 方法将文件写入 /tmp
目录。
此目录中的所有文件都存储在实例的 RAM 中,因此写入 /tmp
会占用系统内存。此外,/tmp
目录中的文件仅可用于创建文件的应用实例。删除实例时,临时文件也会一并删除。
如未另行说明,那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可,并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情,请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC):2025-09-04。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2025-09-04。"],[[["\u003cp\u003eCloud Storage is recommended for reading and writing files in App Engine, but \u003ccode\u003e/tmp\u003c/code\u003e can be used for temporary files.\u003c/p\u003e\n"],["\u003cp\u003eWriting to \u003ccode\u003e/tmp\u003c/code\u003e uses system memory because files are stored in the instance's RAM.\u003c/p\u003e\n"],["\u003cp\u003eFiles in \u003ccode\u003e/tmp\u003c/code\u003e are only accessible to the app instance that created them and are deleted when the instance is terminated.\u003c/p\u003e\n"],["\u003cp\u003eGo's \u003ccode\u003eTempDir\u003c/code\u003e and \u003ccode\u003eTempFile\u003c/code\u003e methods read and write files to the \u003ccode\u003e/tmp\u003c/code\u003e directory by default.\u003c/p\u003e\n"]]],[],null,["# Reading and Writing Temporary Files\n\nWhile [Cloud Storage](/appengine/docs/legacy/standard/go111/using-cloud-storage)\nis the recommended solution for reading and writing files in App Engine,\nif your app only needs to write temporary files, you can use standard\nGo 1.11 methods to write files to a directory named `/tmp`.\n\nAll files in this directory are stored in the instance's RAM, therefore writing\nto `/tmp` takes up system memory. In addition, files in the `/tmp` directory are\nonly available to the app instance that created the files. When the instance is\ndeleted, the temporary files are deleted.\n| Golang provides the [`TempDir`](https://golang.org/pkg/io/ioutil/#TempDir) and [`TempFile`](https://golang.org/pkg/io/ioutil/#TempFile) methods that read and write files to your app instance's `/tmp` directory by default."]]