SpringBoot 使用Filter 解决Xss攻击 HTML标签转义

XSS攻击通常指的是通过利用网页开发时留下的漏洞，通过巧妙的方法注入恶意指令代码到网页，使用户加载并执行攻击者恶意制造的网页程序。这些恶意网页程序通常是JavaScript，但实际上也可以包括Java、 VBScript、ActiveX、 Flash 或者甚至是普通的HTML。攻击成功后，攻击者可能得到包括但不限于更高的权限（如执行一些操作）、私密网页内容、会话和cookie等各种内容。

XSSFilter

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * 类 名: XSSFilter
 * 描 述:
 * 作 者: binglong180
 * 创 建: 2020-06-24 10:28
 * 邮 箱: binglong172@163.com
 */

public class XSSFilter implements Filter {
  /**
   * 不需要转义的url
   */
  List<String> passList = new ArrayList<>();

  @Override
  public void init(FilterConfig filterConfig) throws ServletException {
        passList.add("/image/upload");
        passList.add("/adminLogin");
        passList.add("/admin/annex/upload");
        passList.add("/uscLogin");
  }


  @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

        HttpServletRequest request =  (HttpServletRequest)servletRequest;
        String requestURI = request.getRequestURI();

        if(!passList.contains(requestURI)){
          filterChain.doFilter(new XSSRequestWrapper(request) , servletResponse);
        }else{
          filterChain.doFilter(servletRequest,servletResponse);
        }

    }

}

XSSRequestWrapper 参数重写类

import org.springframework.web.util.HtmlUtils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;

/**
 * 类 名: XSSRequestWrapper
 * 描 述:
 * 作 者: binglong180
 * 创 建: 2020-06-24 10:39
 * 邮 箱: binglong172@163.com
 */

public class XSSRequestWrapper extends HttpServletRequestWrapper {
    public XSSRequestWrapper(HttpServletRequest request) {
        super(request);
    }

    @Override
    public String[] getParameterValues(String name) {
        //获取所有参数值的集合
        String[] results = this.getParameterMap().get(name);
        if (results != null && results.length > 0) {
            int length = results.length;
            for (int i = 0; i < length; i++) {
                //过滤参数值
                results[i] = HtmlUtils.htmlEscape(results[i]);
            }
            return results;
        }
        return null;
    }

}