这里有新鲜出炉的Java函数式编程,程序狗速度看过来!
java 是一种可以撰写跨平台应用软件的面向对象的程序设计语言,是由Sun Microsystems公司于1995年5月推出的Java程序设计语言和Java平台(即JavaEE(j2ee), JavaME(j2me), JavaSE(j2se))的总称。
下面小编就为大家带来一篇java 过滤器filter防sql注入的实现代码。小编觉得挺不错的,现在就分享给大家,也给大家做个参考。一起跟随小编过来看看吧
实例如下:
XSSFilter.java
- public void doFilter(ServletRequest servletrequest, ServletResponse servletresponse, FilterChain filterchain) throws IOException,
- ServletException {
- //flag = true 只做URL验证; flag = false 做所有字段的验证;
- boolean flag = true;
- if (flag) {
- //只对URL做xss校验
- HttpServletRequest httpServletRequest = (HttpServletRequest) servletrequest;
- HttpServletResponse httpServletResponse = (HttpServletResponse) servletresponse;
- String requesturi = httpServletRequest.getRequestURL().toString();
- requesturi = URLDecoder.decode(requesturi, "UTF-8");
- if (requesturi != null && requesturi.indexOf("alipay_hotel_book_return.html") != -1) {
- filterchain.doFilter(servletrequest, servletresponse);
- return;
- }
- if (requesturi != null && requesturi.indexOf("account_bank_return.html") != -1) {
- filterchain.doFilter(servletrequest, servletresponse);
- return;
- }
- if (requesturi != null && requesturi.indexOf("/alipay/activity.html") != -1) {
- filterchain.doFilter(servletrequest, servletresponse);
- return;
- }
- if (requesturi != null && requesturi.indexOf("/alipayLogin.html") != -1) {
- filterchain.doFilter(servletrequest, servletresponse);
- return;
- }
- RequestWrapper rw = new RequestWrapper(httpServletRequest);
- String param = httpServletRequest.getQueryString();
- if (!"".equals(param) && param != null) {
- param = URLDecoder.decode(param, "UTF-8");
- String originalurl = requesturi + param;
- String sqlParam = param;
- //添加sql注入的判断
- if (requesturi.endsWith("/askQuestion.html") || requesturi.endsWith("/member/answer.html")) {
- sqlParam = rw.cleanSQLInject(param);
- }
- String xssParam = rw.cleanXSS(sqlParam);
- requesturi += "?" + xssParam;
- if (!xssParam.equals(param)) {
- System.out.println("requesturi::::::" + requesturi);
- httpServletResponse.sendRedirect(requesturi);
- System.out.println("no entered.");
- // filterchain.doFilter(new RequestWrapper((HttpServletRequest) servletrequest), servletresponse);
- return;
- }
- }
- filterchain.doFilter(servletrequest, servletresponse);
- } else {
- //对请求中的所有东西都做校验,包括表单。此功能校验比较严格容易屏蔽表单正常输入,使用此功能请注意。
- filterchain.doFilter(new RequestWrapper((HttpServletRequest) servletrequest), servletresponse);
- }
- }
- requestMapping:
- public RequestWrapper() {
- super(null);
- }
- public RequestWrapper(HttpServletRequest httpservletrequest) {
- super(httpservletrequest);
- }
- public String[] getParameterValues(String s) {
- String str[] = super.getParameterValues(s);
- if (str == null) {
- return null;
- }
- int i = str.length;
- String as1[] = new String[i];
- for (int j = 0; j < i; j++) {
- as1[j] = cleanXSS(cleanSQLInject(str[j]));
- }
- return as1;
- }
- public String getParameter(String s) {
- String s1 = super.getParameter(s);
- if (s1 == null) {
- return null;
- } else {
- return cleanXSS(cleanSQLInject(s1));
- }
- }
- public String getHeader(String s) {
- String s1 = super.getHeader(s);
- if (s1 == null) {
- return null;
- } else {
- return cleanXSS(cleanSQLInject(s1));
- }
- }
- public String cleanXSS(String src) {
- String temp = src;
- System.out.println("xss---temp-->" + src);
- src = src.replaceAll("<", "<").replaceAll(">", ">");
- // if (src.indexOf("address")==-1)
- // {
- src = src.replaceAll("\\(", "(").replaceAll("\\)", ")");
- //}
- src = src.replaceAll("'", "'");
- Pattern pattern = Pattern.compile("(eval\\((.*)\\)|script)", Pattern.CASE_INSENSITIVE);
- Matcher matcher = pattern.matcher(src);
- src = matcher.replaceAll("");
- pattern = Pattern.compile("[\\\"\\'][\\s]*javascript:(.*)[\\\"\\']", Pattern.CASE_INSENSITIVE);
- matcher = pattern.matcher(src);
- src = matcher.replaceAll("\"\"");
- //增加脚本
- src = src.replaceAll("script", "").replaceAll(";", "").replaceAll("\"", "").replaceAll("@", "").replaceAll("0x0d", "").replaceAll("0x0a", "").replaceAll(",", "");
- if (!temp.equals(src)) {
- System.out.println("输入信息存在xss攻击!");
- System.out.println("原始输入信息-->" + temp);
- System.out.println("处理后信息-->" + src);
- }
- return src;
- }
- //需要增加通配,过滤大小写组合
- public String cleanSQLInject(String src) {
- String temp = src;
- src = src.replaceAll("insert", "forbidI").replaceAll("select", "forbidS").replaceAll("update", "forbidU").replaceAll("delete", "forbidD").replaceAll("and", "forbidA").replaceAll("or", "forbidO");
- if (!temp.equals(src)) {
- System.out.println("输入信息存在SQL攻击!");
- System.out.println("原始输入信息-->" + temp);
- System.out.println("处理后信息-->" + src);
- }
- return src;
- }
xml配置:
- <filter>
- <filter-name>XssFilter</filter-name>
- <filter-class>cn.com.jsoft.xss.XSSFilter</filter-class>
- <init-param>
- <param-name>encoding</param-name>
- <param-value>UTF-8</param-value>
- </init-param>
- </filter>
- <filter-mapping>
- <filter-name>XssFilter</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping>
以上代码仅仅将特殊的sql字符,特殊script脚本字符处理掉,具体的页面处理还需要后台处理!!
关于这篇java 过滤器filter防sql注入的实现代码就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持PHPERZ。
来源: http://www.phperz.com/article/17/1115/360144.html