Question

使用Spring MVC Portlet我需要在modelattribute中从依赖于ActionRequest（liferay 6.1.1）的服务中检索信息。

我试过这个：

@ActionMapping(params="myaction=editUser")
    public void editUser(@ModelAttribute(value = "user") UserInfo user, BindingResult bindingResult,
                                        ActionResponse response, SessionStatus sessionStatus, ActionRequest request)
            throws Exception {

        myEditUserValidator.validate(user, bindingResult);

    //...
}

@ModelAttribute("user")
    public UserInfo getUser(@RequestParam String uid, ActionRequest request) throws Exception {
        return ldapService.getUser(uid, getVirtualPortalLdapMapping(request, virtualPortals));
}

但错误是：

ERROR [DispatcherPortlet:559] Could not complete request
org.springframework.web.bind.annotation.support.HandlerMethodInvocationException:
Failed to invoke handler method [public void com.mystuff.portlets.controllers.EditUserController.editUser(org.springframework.ui.Model,java.lang.String,org.springframework.validation.BindingResult,javax.portlet.ActionResponse,org.springframework.web.bind.support.SessionStatus,javax.portlet.ActionRequest)
throws java.lang.Exception]; nested exception is java.lang.IllegalStateException: 
Errors/BindingResult argument declared without preceding model attribute. Check your handler method signature!

有什么想法吗？感谢您的帮助

Answer 1

您已错误地声明了您的模型属性。值不应该在那里。

public void editUser(@ModelAttribute("user") UserInfo user, BindingResult bindingResult,
ActionResponse response, SessionStatus sessionStatus, ActionRequest request)

取决于ActionRequest的@ModelAttribute

1 个答案: