tomcat拒绝访问特定文件

Question

我在Tomcat中有一个webapp,其主JSP文件包含页面中心的另一个JSP文件.我想直接拒绝访问该文件,并且只允许直接访问主索引页面.

此外,我不希望用户能够直接从我的webapp获取图像.

我如何用Tomcat拒绝这些请求？我希望所有请求都转发到我的主页面.

Answer 1

从页面阻止访问包含文件.

添加web.xml:

<security-constraint>
    <web-resource-collection>
        <web-resource-name>Include files</web-resource-name>
        <description>No direct access to include files.</description>
        <url-pattern>/inc/*</url-pattern>
        <http-method>POST</http-method>
        <http-method>GET</http-method>
    </web-resource-collection>
    <auth-constraint>
        <description>No direct browser access to include files.</description>
        <role-name>NobodyHasThisRole</role-name>
    </auth-constraint>
</security-constraint>

Answer 2

一种方法是实施Filter

例如：

package package;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class FilterImplementation implements Filter
{
    public void init(FilterConfig filterConfig) throws ServletException {...}

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException
    {
        // if you detect an illegal request, throw an exception or return without calling chain.doFilter.
        chain.doFilter(request, response);     
    }

    public void destroy() {...}
}

将以下内容添加到 web.xml：

<filter>
    <filter-name>MyFilter</filter-name>
    <filter-class>package.FilterImplementation</filter-class>
</filter>

<filter-mapping>
    <filter-name>MyFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

编辑

您需要了解的有关正在请求哪个页面的所有信息都在request参数中。然而，参数类型ServletRequest几乎总是 an，HttpServletRequest因此您可以执行以下操作：

if (request instanceof HttpServletRequest)
{
    HttpServletRequest hrequest = (HttpServletRequest) request;
    String uri = hrequest.getRequestURI(); // you should be able to just use this
    String uri = hrequest.getRequestURL(); // otherwise there are more in-depth fields
}