Java 如何从另一个传递表单对象以及调用的操作方法调用弹簧控制器@RequestMapping
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how to call spring controller @RequestMapping from another action method passing form object along with the call
提问by romil gaurav
I need to call another @RequestMapping from inside of a spring controller. Now I can easily do it by
我需要从弹簧控制器内部调用另一个 @RequestMapping 。现在我可以轻松地通过
return "redirect:anotherMapping.htm";
But the I need to pass value in form object as well.
但是我也需要在表单对象中传递值。
@RequestMapping("/anotherMapping")
public ModelAndView addUser(final @ModelAttribute("userLogin") UserLogin
userLogin, final HttpServletRequest request){
I need to pass userId in UserLogin. If I write return "redirect:anotherMapping.htm";, then it invokes this controller method but form object is null.
我需要在 UserLogin 中传递 userId。如果我写 return "redirect:anotherMapping.htm";，那么它会调用这个控制器方法，但表单对象为空。
Please help.
请帮忙。
采纳答案by gerrytan
You can use RedirectAttributes.
您可以使用重定向属性。
In below example, when foo is invoked and redirects to /bar, the model will contain xyz=meowattribute.
在下面的示例中，当 foo 被调用并重定向到 时/bar，模型将包含xyz=meow属性。
@RequestMapping(..)
public String foo(RedirectAttributes redir) {
redir.addFlashAttribute("xyz", "meow");
return "redirect:/bar";
}
@RequestMapping("/bar")
public String bar(Model model) {
..
}
If you find doing this too many time you might also consider using @SessionAttributes
如果您发现这样做的时间太多，您也可以考虑使用@SessionAttributes
