春季安全。授权在jsp上不起作用

Question

我有以下 jsp 页面，该 jsp 按预期编译

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="sprSec" uri="http://www.springframework.org/security/tags"%>

<c:if test="${sessionScope.userName!=null}">

    ...

</c:if>

在登录控制器方法中，我有以下行：

session.setAttribute("userName", name);

---

我认为最好使用 spring 安全标签重写它

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="sprSec" uri="http://www.springframework.org/security/tags"%>

<sprSec:authorize access="isAuthenticated()">

  ...

</sprSec:authorize>

现在尝试访问页面时出现以下错误：

  org.apache.jasper.JasperException: org.apache.jasper.JasperException: An exception occurred processing JSP page /WEB-INF/*/*****.jsp at line 5

    2: <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
    3: <%@ taglib prefix="sprSec" uri="http://www.springframework.org/security/tags"%>
    4: 
    5: <sprSec:authorize access="isAuthenticated()">
    6: 
    7: <c:set var="profileUrl" value="#" scope="request" />
    8:  <sprSec:authorize ifAllGranted="ROLE_USER">


....

root cause

javax.servlet.ServletException: javax.servlet.jsp.JspException: java.io.IOException: No visible WebSecurityExpressionHandler instance could be found in the application context. There must be at least one in order to support expressions in JSP 'authorize' tags.
..........

Answer 1

这可能是 Spring Security - No visible WebSecurityExpressionHandler instance could be found in the application context 的副本。

正如那里指出的，确保为您的配置的http 元素添加一个设置为true 的use-expressions 属性，即写<http use-expressions="true">。