我在使用当前对象中包含的默认值创建时遇到问题.
该值在字段中正确设置,但是当我提交表单时,默认值仍然存在,即使用户在列表中选择了另一个值...
这是我的控制器:
@RequestMapping(method = RequestMethod.GET)
public String createForm(final ModelMap modelMap){
User user;
user = new User();
user.setGroup("HelpDesk");
user.setName("John");
ArrayList<String> groupList = new ArrayList<>();
groupList.add("Admin");
groupList.add("HelpDesk");
groupList.add("GroupManager");
groupList.add("Others");
modelMap.addAttribute("user", user);
modelMap.addAttribute("groupList", groupList);
return "/user/user-add";
}
@RequestMapping(method = RequestMethod.POST)
public String createUser(@ModelAttribute("user") final User user, BindingResult result) {
userValidator.validate(user, result, groupList);
logger.info(user.getGroup()); //Will print "HelpDesk,Admin" for instance
return "...";
}
这是我的JSP:
<table>
<form:form method="POST" modelAttribute="user">
<tr>
<td>Name:</td>
<td><form:input path="name"/></td>
<td><form:errors path="name" cssClass="error" /></td>
</tr>
<tr>
<td>Group:</td>
<td><form:select path="group" items="${groupList}" multiple="single"/></td>
<td><form:errors …