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一个轻量级的应用防火墙

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package com.cybermkd.icewall.attack;

import java.util.regex.Pattern;

/**
 * XSS脚本攻击防御
 */
public class XSS implements Istrip {

    /**
     * @param value 待处理内容
     * @return
     * @Description XSS脚本内容剥离
     */
    public String strip(String value) {
        String rlt = null;

        if (value != null) {
            // NOTE: It's highly recommended to use the ESAPI library and uncomment the following line to
            // avoid encoded attacks.
            // value = ESAPI.encoder().canonicalize(value);

            // Avoid null characters
            rlt = value.replaceAll("", "");

            // Avoid anything between script tags
            Pattern scriptPattern = Pattern.compile("", Pattern.CASE_INSENSITIVE);
            rlt = scriptPattern.matcher(rlt).replaceAll("");

            // Avoid anything in a src='...' type of expression
            scriptPattern = Pattern.compile("src[\r\n]*=[\r\n]*\\\'(.*?)\\\'", Pattern.CASE_INSENSITIVE
                    | Pattern.MULTILINE | Pattern.DOTALL);
            rlt = scriptPattern.matcher(rlt).replaceAll("");

            scriptPattern = Pattern.compile("src[\r\n]*=[\r\n]*\\\"(.*?)\\\"", Pattern.CASE_INSENSITIVE
                    | Pattern.MULTILINE | Pattern.DOTALL);
            rlt = scriptPattern.matcher(rlt).replaceAll("");

            // Remove any lonesome  tag
            scriptPattern = Pattern.compile("", Pattern.CASE_INSENSITIVE);
            rlt = scriptPattern.matcher(rlt).replaceAll("");

            // Remove any lonesome