编辑: 如果有人在遵循以下指南时遇到问题,我建议使用更简单的方法,例如:https://www.youtube.com/watch?v=yaxUV3Ib4vM
我仍在关注本教程:spring-mvc-radiobutton-and-radiobuttons-example并且到目前为止我已经创建了这个控制器:
@RequestMapping(value = "add", method = RequestMethod.GET)
public String add(Model model) {
MyObject object = new MyObject();
object.setParameter("fake parameter");
model.addAttribute("add", object);
initModelList(model);
return "add";
}
@RequestMapping(value = "add", method = RequestMethod.POST)
public String add(@ModelAttribute("add") @Validated MyObject object, BindingResult result, Model model) {
model.addAttribute("add", object);
String returnVal = "redirect:/add/object";
if(result.hasErrors()) {
initModelList(model);
returnVal = "add";
} else {
model.addAttribute("add", object);
}
return returnVal;
}
@RequestMapping(value = "/add/object", method = RequestMethod.POST)
public String addObject(
@ModelAttribute MyObject object,
ModelMap model) throws DatatypeConfigurationException {
try{
...marshalling results in xml output
...inserting it in database
...showing the result
return "objectResult";
} catch (Exception e) {
LOG.error(e.getMessage(), e);
throw new RuntimeException(e);
}
}
当然这个解决方案不起作用,因为重定向是 GET 类型。 我尝试将最后两种方法融合在一起,如下所示:
@RequestMapping(value = "add", method = RequestMethod.POST)
public String add(@ModelAttribute("add") @Validated MyObject object, BindingResult result, Model model)
throws DatatypeConfigurationException {
model.addAttribute("add", object);
String returnVal = "objectResult";
if(result.hasErrors()) {
initModelList(model);
returnVal = "add";
} else {
model.addAttribute("add", object);
}
try{
...mashalling etcetera
return returnVal;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
throw new RuntimeException(e);
}
}
但是这样验证就不起作用了。我不知道如何解决这个问题,我想使用 spring 验证器,但如果我不能使用它,我将回归该项目,这是一个耻辱。
如果有人在遵循相同指南时遇到问题,我建议使用更简单的方法,例如:https://www.youtube.com/watch?v=yaxUV3Ib4vM 不需要更新maven依赖