弹簧和速度-表格处理

Question

I googled it, but could not find completely full answer. How can I handle the form from Spring, if I use Velocity templates as View? Assume I have the following form:

<form action="" method="POST" id="newThreadForm">
    <input type="text" placeholder="Title" id="title"/>
    <input type="text" placeholder="Author" id="author"/>
    <input type="text" placeholder="E-mail" id="email">
    <!-- other fields... -->
</form>

And have a simple class:

public class Post {
    private int id;
    private String author;
    private String email;
    private String title;
    //other fields

    //getters and setters
}

How can I convert the data that user types in the form to Post object in my Controller method?

 @RequestMapping(value="path/to/", method=RequestMethod.POST)
 public String newThread(Model model) {
     //what should be there?
     return "view-name"; 
 }

Do I need to create a new class, smth like public class NewThreadForm ? Add BindingResult argument to the method? Or what should I do? Thanks for answers.

UPD: I wrote:

@RequestMapping(value="/{board}/new", method=RequestMethod.POST)
public String newThread(Model model, @PathVariable("board") String boardName, Post post, HttpServletRequest request) {
    log.info("newThread()");
    Board board = new Board();
    board.setName(boardName);
    post.setBoard(board);
    post.setDeletePassword(DigestUtils.md5DigestAsHex(post.getDeletePassword().getBytes()));
    post.setIp(request.getRemoteAddr());
    Thread newThread = new Thread();
    newThread.setOpPost(post);
    threadDao.addThread(newThread);
    return "redirect:/" + boardName; 
}

But when I send the form data, Spring shows me 400 error: The request sent by the client was syntactically incorrect. First line log.info("newThread()"); doesn't runs. What's wrong?

UPD2: it was cause of "id", not "name" attributes in form html

Answer 1

public String newThread(Post post, Model model) { ... } should work. You will get a populated Post instance inside the method that you can validate, persist, etc.