Question

您好我正在尝试使用Grails的Spring Security Core并尝试获取当前登录的用户。但是，我得到java.lang.NullPointerException，这是由以下原因导致的：无法获取属性＆＃39; principal＆＃39;在null对象上。

以下是我的代码：

import static org.springframework.http.HttpStatus.*
import grails.transaction.Transactional
import grails.plugin.springsecurity.annotation.Secured

@Secured(['ROLE_ADMIN'])
@Transactional
class MyController {

    static allowedMethods = [save: "POST", update: "PUT", delete: 
                            "DELETE"]

    def test(){
         def springSecurityService
         render "Current User is: [" + springSecurityService.principal  
                                  + "]"
         }
    }

由于某些原因，springSecurityService为null。我错过了什么？

请指教。提前谢谢！

Answer 1

正如Joshua Moore所说，这很有效！非常感谢你！

import static org.springframework.http.HttpStatus.*
import grails.transaction.Transactional
import grails.plugin.springsecurity.annotation.Secured

@Secured(['ROLE_ADMIN'])
@Transactional
class MyController {

    static allowedMethods = [save: "POST", update: "PUT", delete: "DELETE"]

    def springSecurityService

    def test(){



        render "Current User is: [" + springSecurityService.principal  + "]"


    }

}

使用Grails的Spring Security Service - 获取当前用户＆＃39; NULL＆＃39;错误

1 个答案: