相关疑难解决方法(0)

如何使用servlet过滤器来更改传入的servlet请求URL

http://nm-java.appspot.com/Check_License/Dir_My_App/Dir_ABC/My_Obj_123

至

http://nm-java.appspot.com/Check_License?Contact_Id=My_Obj_123

？

更新:根据BalusC的以下步骤,我想出了以下代码:

public class UrlRewriteFilter implements Filter {

    @Override
    public void init(FilterConfig config) throws ServletException {
        //
    }

    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest request = (HttpServletRequest) req;
        String requestURI = request.getRequestURI();

        if (requestURI.startsWith("/Check_License/Dir_My_App/")) {
            String toReplace = requestURI.substring(requestURI.indexOf("/Dir_My_App"), requestURI.lastIndexOf("/") + 1);
            String newURI = requestURI.replace(toReplace, "?Contact_Id=");
            req.getRequestDispatcher(newURI).forward(req, res);
        } else {
            chain.doFilter(req, res);
        }
    }

    @Override
    public void destroy() {
        //
    }
}

相关条目web.xml如下所示: …