问题描述
在J2EE应用程序中为Web模块的角色配置安全性约束时,我遇到以下问题:
While configuring the security constraints for a web-module's roles in J2EE application I'm having the following problem:
提供一个名为 customersServlet 的servlet,它在URL中接收两个参数:
Giving a servlet named customersServlet, which receives two parameters in the URL:
- 表示操作的字符串(INS,UPD,DLT和DSP)。
- 用于标识将在其上执行操作的客户的标识号。
EG:url / servlet / cusotmersServlet?UPD,5
用于更新客户5号数据,以及url / servlet / customersServlet?DLT,8
用于删除客户编号8.
E.G.: the url /servlet/cusotmersServlet?UPD,5
is used to update customer number 5 data, and the url /servlet/customersServlet?DLT,8
is used to delete customer number 8.
如果我使用这个安全约束,servlet只能被指定的角色访问,这是可以的:
If I use this security-constraint the servlet can only be accessed by the role specified, which is ok:
<security-constraint>
<web-resource-collection>
<web-resource-name>...</web-resource-name>
<url-pattern>/servlet/clientsServlet*</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>clientAdmin</role-name>
</auth-constraint>
</security-constraint>
但我想限制只将客户插入名为 clientAdmin的角色的能力。
But I want to restrict the ability to insert customers only to a role named clientAdmin.
我已经尝试了几个url模式,但它们都没有按我的意愿工作(所有这些都允许每个角色使用任何参数访问servlet):
I've tried several url patterns but none of them works as I want (all of them allow every role to access the servlet with any parameter):
<url-pattern>/servlet/clientsServlet?INS,*</url-pattern>
<url-pattern>/servlet/clientsServlet?INS/*</url-pattern>
...
如何使用通配符 *
在 url-pattern
标签中?
How to use the wildcard *
in the url-pattern
tag?
注意: 应用程序无法更改,因此我需要一个仅涉及触及部署描述符的解决方案。
Note: The application cannot be changed, so I need a solution that only implies touching the deployment descriptor.
推荐答案
< url-pattern>
标记仅允许非常有限的通配符子集。这可能不是您在其他情况下习惯的,其中 *
可以在任何位置使用。你可以在这里下载Servlet规范:
The <url-pattern>
tag only allows a very restricted subset of wildcards. This is probably not what you are used to from other situations, where a *
can be used at any position. You can download the Servlet specification here:
该文件的SRV.11.2节描述如何解释这些URL模式。特别是, *
在这里不表示零个或多个任意字符。
Section SRV.11.2 of that document describes how these URL patterns are interpreted. In particular, the *
does not mean "zero or more arbitrary characters" here.
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