使用浏览器的网络检查器（F12），看看当浏览器请求bgbody.png形象，它使用的是什么绝对路径，为什么服务器返回一个404回应。

Use your browser's network inspector (F12) to see when the browser is requesting the bgbody.png image and what absolute path it's using and why the server is returning a 404 response.

...假设bgbody.png确实存在：）

...assuming that bgbody.png actually exists :)

是你的CSS样式表文件或在＆LT;风格＆gt;在一个页面块？如果是在样式表则相对路径必须是相对于CSS样式表（而不是引用它的文档）。如果是在一个页面中，那么它必须是相对于当前的资源路径。如果你使用非基于文件系统的资源路径（即使用URL重写或URL路由），那么这会造成问题，这是***的总是使用绝对路径。

Is your CSS in a stylesheet file or in a <style> block in a page? If it's in a stylesheet then the relative path must be relative to the CSS stylesheet (not the document that references it). If it's in a page then it must be relative to the current resource path. If you're using non-filesystem-based resource paths (i.e. using URL rewriting or URL routing) then this will cause problems and it's best to always use absolute paths.

去您的相对路径看起来是单独的样式表中存储图像。我不认为这是一个好主意 -​​ 我支持存储图像和其他资源，如字体，在同一目录样式表本身，因为它简化了路径，也更符合逻辑文件系统的安排

Going by your relative path it looks like you store your images separately from your stylesheets. I don't think this is a good idea - I support storing images and other resources, like fonts, in the same directory as the stylesheet itself, as it simplifies paths and is also a more logical filesystem arrangement.