Question

我正在使用Grails 1.3.4和Spring Security Core 1.0.1。

如果我在有时再次加载页面时选择“记住我”选项，则会出现此错误：

errors.GrailsExceptionResolver Error executing tag <g:render>: Error executing tag <sec:ifLoggedIn>: Cannot create a session after the response has been committed at D:/Workspace/steer/grails-app/views/templates/_header.gsp:18 at D:/Workspace/steer/grails-app/views/layouts/main.gsp:29
org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException: Error executing tag <g:render>: Error executing tag <sec:ifLoggedIn>: Cannot create a session after the response has been committed at D:/Workspace/steer/grails-app/views/templates/_header.gsp:18 at D:/Workspace/steer/grails-app/views/layouts/main.gsp:29
at D__Workspace_steer_grails_app_views_layouts_main_gsp$_run_closure2.doCall(D__Workspace_steer_grails_app_views_layouts_main_gsp:66)
at D__Workspace_steer_grails_app_views_layouts_main_gsp$_run_closure2.doCall(D__Workspace_steer_grails_app_views_layouts_main_gsp)
at D__Workspace_steer_grails_app_views_layouts_main_gsp.run(D__Workspace_steer_grails_app_views_layouts_main_gsp:75)
at java.lang.Thread.run(Thread.java:662)
Caused by: org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException: Error executing tag <sec:ifLoggedIn>: Cannot create a session after the response has been committed at D:/Workspace/steer/grails-app/views/templates/_header.gsp:18
at D__Workspace_steer_grails_app_views_templates__header_gsp.run(D__Workspace_steer_grails_app_views_templates__header_gsp:35)
... 4 more
Caused by: java.lang.IllegalStateException: Cannot create a session after the response has been committed
at D__Workspace_steer_grails_app_views_templates__header_gsp$_run_closure1.doCall(D__Workspace_steer_grails_app_views_templates__header_gsp:22)
at D__Workspace_steer_grails_app_views_templates__header_gsp$_run_closure1.doCall(D__Workspace_steer_grails_app_views_templates__header_gsp)
at grails.plugins.springsecurity.SecurityTagLib$_closure6.doCall(SecurityTagLib.groovy:130)
... 5 more

有谁知道我为什么会收到这个错误？

_Hearer.gsp

        <%@ page import="com.mycompany.myapp.partymodel.roles.SystemUserRole" %>
    <sec:ifLoggedIn>
    <%
    def userId = session.SPRING_SECURITY_CONTEXT?.authentication?.principal?.id
    def userDetails = SystemUserRole.get(userId)
     %>
    <div class="mast_head">
        <ul>
            <li>Welcome ${userDetails?.party?.firstName}</li>
            <li> | </li>
            <li><a href="${createLink(controller: "systemUserRole", action: "editprofile")}">Profile</a></li>
            <li> | </li>
            <li><a href="${createLink(controller: "systemUserRole", action: "changepassword")}">Edit Password</a></li>
            <li> | </li>
            <li><a href="${createLink(controller: "logout", action: "index")}">Sign Out</a></li>
        </ul>
    </div>
    </sec:ifLoggedIn>
    <div id="grailsLogo" class="logo">
        <a href="http://www.mycompany.in/"><img src="${resource(dir:'images',file:'mycompany_trans.png')}" alt="Grails" border="0" height=67 /></a>
    </div>

LayoutTagLib.groovy

        package com.mycompany.myapp.layout
    import  com.mycompany.myapp.trips.Trip

    class LayoutTagLib {
        static namespace = "my"

          def header = { attrs ->
            Trip.withNewSession {
              sec.ifLoggedIn() {
                out << "<div class="mast_head">
        <ul>
            <li>Welcome ${userDetails?.party?.firstName}</li>
            <li> | </li>
            <li><a href="${createLink(controller: "systemUserRole", action: "editprofile")}">Profile</a></li>
            <li> | </li>
            <li><a href="${createLink(controller: "systemUserRole", action: "changepassword")}">Edit Password</a></li>
            <li> | </li>
            <li><a href="${createLink(controller: "logout", action: "index")}">Sign Out</a></li>
        </ul>
    </div>"
              }
            }
          }
    }

Answer 1

我认为这是对layouts中使用这种标记的限制，因为它在提交hibernate会话后由SiteMesh处理。

解决方案是将其包装在会话（withNewSession域类的闭包中）。类似的东西：

LayoutTagLib是TagLib，您可以使用命令create-taglib

创建

grails create-tag-lib com.app.layout.LayoutTagLib

重要提示：将“SomeDomain”替换为您应用的任何现有域类。

class LayoutTagLib {
  static namespace = "my"

  def header = { attrs ->
    SomeDomain.withNewSession {
      sec.ifLoggedIn() {
        out << "Logged In"
      }
    }
  }
}

out是将在页面中打印的html。因此，请使用标题模板中的任何内容进行更改。

那你有 _header.gsp 正确吗？只需使用taglib的调用替换<sec:ifLoggedIn>块。

<my:header />

修改

您需要将查询包装在withNewSession内。并且还会从标题中删除内容，只需调用taglib即可。要获取用户数据，您可以使用springSecurityService。

package com.mycompany.myapp.layout import com.mycompany.myapp.trips.Trip class LayoutTagLib { //dependency injection of the plugin service def springSecurityService static namespace = "my" def header = { attrs -> Trip.withNewSession { sec.ifLoggedIn() { def userId = springSecurityService.currentUser.id def userDetails = SystemUserRole.get(userId) //better transform this in a private method or a template! out << """<div class="mast_head"> <ul> <li>Welcome ${userDetails?.party?.firstName}</li> <li> | </li> <li><a href="${createLink(controller: "systemUserRole", action: "editprofile")}">Profile</a></li> <li> | </li> <li><a href="${createLink(controller: "systemUserRole", action: "changepassword")}">Edit Password</a></li> <li> | </li> <li><a href="${createLink(controller: "logout", action: "index")}">Sign Out</a></li> </ul> </div>""" } } } }

<强> _header.gsp

<my:header/>  <div id="grailsLogo" class="logo"> <a href="http://www.mycompany.in/"><img src="${resource(dir:'images',file:'mycompany_trans.png')}" alt="Grails" border="0" height=67 /></a> </div>

使用Spring Security的“记住我”选项时登录时出错

1 个答案: