防止XSS 攻击集成springboot

# 防止XSS攻击

xss:

  # 过滤开关

  enabled: true

  # 排除链接（多个用逗号分隔）

  excludes: /system/notice/*

  # 匹配链接

  urlPatterns: /system/*,/monitor/*,/tool/*

import java.util.Map;

import javax.servlet.DispatcherType;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.boot.web.servlet.FilterRegistrationBean;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import com.google.common.collect.Maps;

import com.ruoyi.common.utils.StringUtils;

import com.ruoyi.common.xss.XssFilter;

/**

 * Filter配置

 *

 * @author xxx

 */

@Configuration

public class FilterConfig

{

    @Value("${xss.enabled}")

    private String enabled;

    @Value("${xss.excludes}")

    private String excludes;

    @Value("${xss.urlPatterns}")

    private String urlPatterns;

    @SuppressWarnings({ "rawtypes", "unchecked" })

    @Bean

    public FilterRegistrationBean xssFilterRegistration()

    {

        FilterRegistrationBean registration = new FilterRegistrationBean();

        //

        registration.setDispatcherTypes(DispatcherType.REQUEST);

        //过滤器类（继承Filter）

        registration.setFilter(new XssFilter());

        //

        registration.addUrlPatterns(StringUtils.split(urlPatterns, ","));

        //

        registration.setName("xssFilter");

        //

        registration.setOrder(Integer.MAX_VALUE);

        Map<String, String> initParameters = Maps.newHashMap();

        initParameters.put("excludes", excludes);

        initParameters.put("enabled", enabled);

        //Filter 初始化参数

        registration.setInitParameters(initParameters);

        return registration;

    }

}

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import com.ruoyi.common.utils.StringUtils;

/**

 * 防止XSS攻击的过滤器

 *

 * @author xxx

 */

public class XssFilter implements Filter

{

    /**

     * 排除链接

     */

    public List<String> excludes = new ArrayList<>();

    /**

     * xss过滤开关

     */

    public boolean enabled = false;

    @Override

    public void init(FilterConfig filterConfig) throws ServletException

    {

        String tempExcludes = filterConfig.getInitParameter("excludes");

        String tempEnabled = filterConfig.getInitParameter("enabled");

        if (StringUtils.isNotEmpty(tempExcludes))

        {

            String[] url = tempExcludes.split(",");

            for (int i = 0; url != null && i < url.length; i++)

            {

                excludes.add(url[i]);

            }

        }

        if (StringUtils.isNotEmpty(tempEnabled))

        {

            enabled = Boolean.valueOf(tempEnabled);

        }

    }

    @Override

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)

            throws IOException, ServletException

    {

        HttpServletRequest req = (HttpServletRequest) request;

        HttpServletResponse resp = (HttpServletResponse) response;

        if (handleExcludeURL(req, resp))

        {

            chain.doFilter(request, response);

            return;

        }

        XssHttpServletRequestWrapper xssRequest = new XssHttpServletRequestWrapper((HttpServletRequest) request);

        chain.doFilter(xssRequest, response);

    }

    private boolean handleExcludeURL(HttpServletRequest request, HttpServletResponse response)

    {

        if (!enabled)

        {

            return true;

        }

        if (excludes == null || excludes.isEmpty())

        {

            return false;

        }

        String url = request.getServletPath();

        for (String pattern : excludes)

        {

            Pattern p = Pattern.compile("^" + pattern);

            Matcher m = p.matcher(url);

            if (m.find())

            {

                return true;

            }

        }

        return false;

    }

    @Override

    public void destroy()

    {

    }

}

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletRequestWrapper;

import org.jsoup.Jsoup;

import org.jsoup.safety.Whitelist;

/**

 * XSS过滤处理

 *

 * @author xxx

 */

public class XssHttpServletRequestWrapper extends HttpServletRequestWrapper

{

    /**

     * @param request

     */

    public XssHttpServletRequestWrapper(HttpServletRequest request)

    {

        super(request);

    }

    @Override

    public String[] getParameterValues(String name)

    {

        String[] values = super.getParameterValues(name);

        if (values != null)

        {

            int length = values.length;

            String[] escapseValues = new String[length];

            for (int i = 0; i < length; i++)

            {

                // 防xss攻击和过滤前后空格

                escapseValues[i] = Jsoup.clean(values[i], Whitelist.relaxed()).trim();

            }

            return escapseValues;

        }

        return super.getParameterValues(name);

    }

}