/WEB-INF中的JSP返回“HTTP状态404请求的资源不可用"； [英] JSP in /WEB-INF returns "HTTP Status 404 The requested resource is not available"
问题描述
我创建了一个 JSP 文件.
I created a JSP file.
sample.jsp
<%@ page pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<title>Insert title here</title>
</head>
<body>
This is jsp program
</body>
</html>
我把它放在 samplejsp 项目中.
I placed it here in the samplejsp project.
samplejsp
`-- WebContent
`-- WEB-INF
`-- sample.jsp
我在以下网址打开了它.
I opened it on the following URL.
http://localhost:8080/samplejsp/sample.jsp
但在浏览器中显示以下错误.
But it shows the following error in browser.
请求的资源 (/sample.jsp) 不可用.
404 ERROR
The requested resource (/sample.jsp) is not available.
推荐答案
404 只是意味着 未找到".
404 simply means "Not Found".
URL 错误(注意:区分大小写！)，或者资源不在您认为的位置.
Either the URL is wrong (note: case sensitive!), or the resource is not there where you think it is.
只需验证 URL 和/或验证资源是否在您期望的位置.您将 sample.jsp 放在 /WEB-INF 文件夹中.这样，如果不通过前端控制器 servlet 调用，就不能公开访问它.
Just verify the URL and/or verify if the resource is there where you'd expect it to be. You placed sample.jsp in /WEB-INF folder. This way it is not publicly accessible without calling through a front controller servlet.
把它放在/WEB-INF之外.
samplejsp
`-- WebContent
|-- WEB-INF
`-- sample.jsp
如果你想把它保存在 /WEB-INF 中，那么你需要创建一个前端控制器 servlet，它在 doGet() 方法中转发给它，如下所示.
If you want to keep it in /WEB-INF, then you need to create a front controller servlet which forwards to it in doGet() method as below.
request.getRequestDispatcher("/WEB-INF/sample.jsp").forward(request, response);
终于打开"了只需调用 servlet 的实际 URL 而不是 JSP 的虚构 URL.
Finally "open" the JSP by just calling servlet's actual URL instead of JSP's fictive URL.
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