我有一个GWT应用程序,其URL为.../Organizer.html
。我也想从网址.../organizer
访问它。所以我决定用servlet过滤器中的覆盖HttpServletRequest
和getRequestURL()
方法用包装器替换原来的getRequestURI()
。
过滤代码:
String[] urlSplit = req.getRequestURL().toString().split("/");
String urlEnd = urlSplit[urlSplit.length -1];
if (urlEnd.equals(ORGANIZER_URL_ALTERNATIVE)){
String newUrl = req.getRequestURL().toString().
replace(ORGANIZER_URL_ALTERNATIVE, ORGANIZER_URL);
String newUri = req.getRequestURI().toString().
replace(ORGANIZER_URL_ALTERNATIVE, ORGANIZER_URL);
request = new ChangeUrlRequest(req, newUrl, newUri);
}
//Just to check if it works
req = (HttpServletRequest) request;
System.out.println(req.getRequestURL());
System.out.println(req.getRequestURI());
chain.doFilter(request, response);
请求包装器:
class ChangeUrlRequest extends HttpServletRequestWrapper {
private StringBuffer newUrlBuffer;
private String newUri;
public ChangeUrlRequest(HttpServletRequest request,String newUrl, String newUri) {
super(request);
newUrlBuffer = new StringBuffer(newUrl);
this.newUri = newUri;
}
@Override
public StringBuffer getRequestURL() {
return newUrlBuffer;
}
@Override
public String getRequestURI() {
return newUri;
}
}
这可以按照我预期的方式使用.../organizer
并由.../Organizer.html
替换
我现在遇到的问题是,即使我从浏览器访问... / organizer或... / Organizer.html,URL / URI是相同的,只有... / Organizer.html适用于... /组织者Tomcat抱怨它无法找到页面: HTTP状态404 - /my-page/Organizer.html
上述代码中System.out
的输出:
使用Organizer.html(有效):
网址:http://localhost:8080/my-page/Organizer.html
URI:/my-page/Organizer.html
与组织者(上面提到404):
网址:http://localhost:8080/my-page/Organizer.html
URI:/my-page/Organizer.html
我是否还需要覆盖或更改其他内容?
答案 0 :(得分:0)
如果目标是能够通过任一URL访问应用程序,那么可能有一个更简单的解决方案。您可以编写一个可在/organizer
访问的servlet,并将请求转发到HTML页面,例如:
@WebServlet(urlPatterns="/organizer")
public class OrganizerServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response) {
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/Organizer.html");
dispatcher.forward(request,response);
}
}
请注意,如果/organizer
和/Organizer.html
不在应用程序的根目录,则可能需要修改这些路径。