java - 如何防止 Spring 3.0 MVC @ModelAttribute 变量出现在 URL 中？

Question

使用 Spring MVC 3.0.0.RELEASE，我有以下 Controller :

@Controller
@RequestMapping("/addIntake.htm")
public class AddIntakeController{

  private final Collection<String> users;

  public AddIntakeController(){
    users = new ArrayList<String>();
    users.add("user1");
    users.add("user2");
    // ...
    users.add("userN");
  }

  @ModelAttribute("users")
  public Collection<String> getUsers(){
    return this.users;
  }

  @RequestMapping(method=RequestMethod.GET)
  public String setupForm(ModelMap model){

    // Set up command object
    Intake intake = new Intake();
    intake.setIntakeDate(new Date());
    model.addAttribute("intake", intake);

    return "addIntake";
  }

  @RequestMapping(method=RequestMethod.POST)
  public String addIntake(@ModelAttribute("intake")Intake intake, BindingResult result){

    // Validate Intake command object and persist to database
    // ...

    String caseNumber = assignIntakeACaseNumber();

    return "redirect:intakeDetails.htm?caseNumber=" + caseNumber;

  }

}

Controller 从由 HTML 表单填充的命令对象中读取 Intake 信息，验证命令对象，将信息保存到数据库中，并返回一个案例编号。

一切都很好，除了当我重定向到入口详细信息.htm 页面时，我得到一个如下所示的 URL:

http://localhost:8080/project/intakeDetails.htm?caseNumber=1&users=user1&users=user2&users=user3&users=user4...

如何防止用户集合出现在 URL 中？

Answer 1

model.asMap().clear();
return "redirect:" + news.getUrl();

:)