What is the fix for XSS vulnerabilities?
XSS漏洞修复方案是什么，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
基本概念及解决办法
比较典型的XSS攻击漏洞（Cascading Style Sheets, CSS），俗称跨站脚本攻击;解决办法：将特殊字符进行转义
1、增加过滤器XssFilter.javapublic class XssFilter implements Filter { FilterConfig filterConfig = null; private List urlExclusion = null; public void init(FilterConfig filterConfig) throws ServletException { this.filterConfig = filterConfig; } public void destroy() { this.filterConfig = null; } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { HttpServletRequest httpServletRequest = (HttpServletRequest) request; String servletPath = httpServletRequest.getServletPath(); if (urlExclusion != null && urlExclusion.contains(servletPath)) { chain.doFilter(request, response); } else { chain.doFilter(new XssHttpServletRequestWrapper((HttpServletRequest) request), response); } } public List getUrlExclusion() { return urlExclusion; } public void setUrlExclusion(List urlExclusion) { this.urlExclusion = urlExclusion; }}public class XssHttpServletRequestWrapper extends HttpServletRequestWrapper { public XssHttpServletRequestWrapper(HttpServletRequest servletRequest) { super(servletRequest); } public String[] getParameterValues(String parameter) { String[] values = super.getParameterValues(parameter); if (values == null) { return null; } int count = values.length; String[] encodedValues = new String[count]; for (int i = 0; i < count; i++) { encodedValues[i] = cleanXSS(values[i]); } return encodedValues; } public String getParameter(String parameter) { String value = super.getParameter(parameter); if (value == null) { return null; } return cleanXSS(value); } public String getHeader(String name) { String value = super.getHeader(name); if (value == null) return null; return cleanXSS(value); } private String cleanXSS(String value) { //You'll need to remove the spaces from the html entities below value = value.replaceAll("", "& gt;"); value = value.replaceAll("\\(", "& #40;").replaceAll("\\)", "& #41;"); value = value.replaceAll("'", "& #39;"); value = value.replaceAll("eval\\((.*)\\)", ""); value = value.replaceAll("[\\\"\\\'][\\s]*_javascript:(.*)[\\\"\\\']", "\"\""); value = value.replaceAll("script", ""); return value; }}2、web.xml增加过滤器配置 XssFilter com.powersi.hygeia.web.filter.XssFilter XssFilter /*关于XSS漏洞修复方案是什么问题的解答就分享到这里了，希望以上内容可以对大家有一定的帮助，如果你还有很多疑惑没有解开，可以关注行业资讯频道了解更多相关知识。
