当合并来自JSP的表单对象时,Spring MVC缺少依赖集合的ID [英] Spring mvc miss id of dependent collection when combine form object from jsp
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问题描述
我有以下控制器可以返回视图:
I have following controller to return view:
@RequestMapping(value = "/admin/adminUsers", method = RequestMethod.GET)
public String adminUsers(ModelMap model, HttpSession session) {
Set<TerminalAdmin> users = terminalAdminService.getAllAdmins();
session.setAttribute("users", users);
model.addAttribute("adminRoles", terminalAdminService.findAllAdminRoles());
model.addAttribute("terminalAdmin", new TerminalAdmin());
model.addAttribute("generatedPassword", PasswordUpdateStatus.generatePassword());
return "admin/adminUsers";
}
terminalAdminService.findAllAdminRoles()
返回具有ID的集合:
在jsp上,我这样渲染它:
On jsp I render it like this:
<form:form modelAttribute="terminalAdmin" action="/admin/addNewAdmin">
...
<form:checkboxes items="${adminRoles}" path="adminRoles"/>
...
</form:form>
我有下面的控制器来接受该对象:
I have the follwing controller to accept this object:
@RequestMapping(value = "/admin/addNewAdmin")
public String adminUsers(@ModelAttribute @Valid TerminalAdmin terminalAdmin...){
....
}
在调试中,我看到terminalAdmin
带有不带ID的adminRoles.
In debug I see that terminalAdmin
comes with adminRoles without ids.
该如何解决?
P.S.
推荐答案
i prefer to use Converters, because for me it's cleaner
您应该具有以下内容:
public class StringToAdminRoleConverter implements Converter<String, AdminRole> {
@Autowired
TerminalAdminService terminalAdminService;
@Override
public AdminRole convert(String role) {
return terminalAdminService.findRoleByName(role);
}
}
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