从重定向到JSP到@RequestParam

Question

So I'm having this code in a JSP file:

<form action="/demo/quests/view?questId=${m.id}" >
    <button type="submit" class="btn btn-primary" >See quest</button>
</form

My method has this definition:

RequestMapping(value = "/view", method = RequestMethod.GET)
public String displayQuest(@RequestParam(value = "questId") String questId, Model model){}

The problem is that my form is redirrecting to quests/view? How can I make it redirrect to quests/view?questId=asdasdasd

**Using @requestParam is a must, because with @PathVariable I get a weird bug

Answer 1

Your method definition is ok but you should use your form submission as :

<form action="${pageContext.request.contextPath}/demo/quests/view">
    <input type="text" class="form-control" id="questId" 
    name="questId" required>
    <button type="submit" class="btn btn-primary" >See quest</button>
</form

@RequestParam handles that there is a parameter with name questId which is described at your @RequestParam(value = "questId") method signature. You can check an exact example from my github repo.

Form Sample: modalAuthor.jsp#form

Handler Method Sample AuthorController#authorPost

Answer 2

Replace

 <form action="/demo/quests/view?questId=${m.id}" >

with

<form action="view?questId=${m.id}" >