我最近学习了使用 Spring Boot 的身份验证和授权教程。它运行良好，我想将其集成到我现有的项目中。我遵循的教程是用 thymeleaf 编写的，我当前的项目是用 jsp 编写的。我尝试在线搜索，但它给了我错误。
这是我的代码:
Controller
@RequestMapping(value = { "/","/welcome" }, method = RequestMethod.GET)
public ModelAndView test() {
ModelAndView model = new ModelAndView("welcomePage");
model.addObject("title","Welcome");
model.addObject("message","This is welcome page");
return model;
}
thymeleaf
<a th:if="${#request.userPrincipal != null}" th:href="@{/logout}">Logout</a>
JSP
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<div>
<a href="/">Home</a> |
<a href="/userInfo">User Info </a> |
<a href="/admin">Admin</a> |
<c:if test="${pageContext.request.userPrincipal != null}">
<h2>Logout</h2>
<br>
</c:if>
${pageContext.request.userPrincipal}
</div>
</body>
</html>
pom.xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
应用程序属性
这是我遇到的问题之一。当我尝试运行它时，它给了我这个错误。
/WEB-INF/jsp/_menu.jsp (line: [18], column: [2]) According to TLD or attribute directive in tag file, attribute [test] does not accept any expressions
这是我第一次使用这个。希望你能帮助我。非常感谢!!
最佳答案
在你的jsp中使用这个而不是你现有的:
"<%@ taglib prefix="c"uri="http://java.sun.com/jsp/jSTL/core"%> "
不带引号
关于java - Spring 启动: How to convert thymeleaf to jsp，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52913656/