java - 如何更改HttpServletRequest的 "pathInfo"

Question

我不敢问一个奇怪的问题，但我想在 Controller 的处理程序方法中更改 HttpServletRequest 的“pathInfo”。请看下面。

我知道我可以使用 getPathInfo() 获取“pathInfo”。然而。我不知道如何设置 pathInfo。是否可以 ？任何帮助将不胜感激

@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"));
    }
});