如何更改HttpServletRequest的"pathInfo“

Question

我不敢问一个奇怪的问题，但我想在控制器的处理程序方法中更改HttpServletRequest的"pathInfo“。请看下面的内容。

我知道我可以通过使用getPathInfo()获得"pathInfo“。然而。我不知道如何设置pathInfo。有可能吗？任何帮助我们都将不胜感激。

@RequestMapping(value = "show1" method = RequestMethod.GET)
public String show1(Model model, HttpServletRequest request) {

    // I want to set up "PathInfo" but this kind of methods are not provided 
    //request.setPathInfo("/show2");

    // I thought that BeanUtils.copy may be available.. but no ideas.

    // I have to call show2() with the same request object
    return show2(model, request);
}

// I am not allowed to edit this method
private String show2(Model model, HttpServletRequest request) {

    // I hope to display "http://localhost:8080/contextroot/show2"
    System.out.println(request.getRequestURL());

    return "complete";
}

Answer 1

您不能设置这些值。

唯一的选择是为您的请求创建一个包装器，如下所示：

return show2(model, new HttpServletRequestWrapper(request) {
    public StringBuffer getRequestURL() {
        return new StringBuffer(
            super.getRequestURL().toString().replaceFirst("/show1$", "/show2"));
    }
});

Answer 2

Path Info由浏览器(客户端)在请求某个URL时设置。