上传时出现 HTTP 403 错误 - CSRF 令牌无效 'null'

Question

此文件包含上传文件的表单

uploadForm.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"   pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://www.springframework.org/security/tags" prefix="sec" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<sec:csrfMetaTags/>
<title>File Upload</title>
</head>
<body>
    <jsp:include page="/resources/layout/header.jsp"/>      <!-- Header -->   
        <div class="container">

            <form action="uploadfile" method="POST" enctype="multipart/form-data">              
                    File to upload: <input type="file" name="file"><br /> 
                    Name: <input type="text" name="name"><br /> <br />
                    <input type="submit" value="Upload"> Press here to upload the file!
            </form>
        </div>  <!-- Container -->

        <jsp:include page="/resources/layout/footer.jsp"/>      <!-- Footer -->
</body>
</html>

我的控制器方法是

@RequestMapping(value = "/uploadFile", method = RequestMethod.POST)
    public String uploadFileHandler(@RequestParam("name") String name,@RequestParam("file") MultipartFile file) {

        if (!file.isEmpty()) {
            try {
                byte[] bytes = file.getBytes();

                // Creating the directory to store file
                String rootPath = System.getProperty("catalina.home");
                File dir = new File(rootPath + File.separator + "tmpFiles");
                if (!dir.exists())
                    dir.mkdirs();

                // Create the file on server
                File serverFile = new File(dir.getAbsolutePath()
                        + File.separator + name);
                BufferedOutputStream stream = new BufferedOutputStream(
                        new FileOutputStream(serverFile));
                stream.write(bytes);
                stream.close();

                logger.info("Server File Location="
                        + serverFile.getAbsolutePath());

                return "You successfully uploaded file=" + name;
            } catch (Exception e) {
                return "You failed to upload " + name + " => " + e.getMessage();
            }
        } else {
            return "You failed to upload " + name
                    + " because the file was empty.";
        }
    }

上传时出现以下错误：

HTTP Status 403 - Invalid CSRF Token 'null' was found on the request parameter '_csrf' or header 'X-CSRF-TOKEN'

我也用过 spring 安全。但我总是给出同样的错误。我尝试了很多但无法解决。能否请您帮忙解决一下。

Answer 1

您的 Spring 应用程序中的 CSRF（跨站请求伪造）保护似乎已启用。实际上它是默认启用的。

根据spring.io：

When should you use CSRF protection? Our recommendation is to use CSRF protection for any request that could be processed by a browser by normal users. If you are only creating a service that is used by non-browser clients, you will likely want to disable CSRF protection.

所以要禁用它：

@Configuration
public class RestSecurityConfig extends WebSecurityConfigurerAdapter {
  @Override
  protected void configure(HttpSecurity http) throws Exception {
    http.csrf().disable();
  }
}

如果您想启用 CSRF 保护，则必须在表单中包含 csrftoken。你可以这样做：

<form .... >
  ....other fields here....
  <input type="hidden"  name="${_csrf.parameterName}"   value="${_csrf.token}"/>
</form>

您甚至可以在表单的操作中包含 CSRF 令牌：

<form action="./upload?${_csrf.parameterName}=${_csrf.token}" method="post" enctype="multipart/form-data">

上传时出现 HTTP 403 错误 - CSRF 令牌无效 'null'

HTTP 403 error while upload - Invalid CSRF Token 'null'

jsp

spring-mvc

spring-security

apache-commons-fileupload