springboot 防止xss 和sql 注入 改写 http 请求 getParameter，getParameterValues，getHeader等方法 有点东西

目录

1.springboot 启动类 引入 过滤器配置

2.过滤器

3.XssAndSqlHttpServletRequestWrapper包装器 包装类

4.修改验证登录代码 这里只写了基础的 了解意思即可

5.测试内容

6.测试结果

7.反黑客小介绍（黑客大哥们好小弟这没啥大用O(∩_∩)O~，但是对待小白黑客还好）

1.springboot 启动类 引入 过滤器配置
package com.superman;

import java.util.HashMap;
import java.util.Map;

import org.apache.log4j.BasicConfigurator;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;

import com.superman.conf.filter.XssAndSqlFilter;
import com.superman.tonifi.InitInfo;

/**
* 项目启动类
*
* @author yushen
*
*/
@SpringBootApplication
public class Provider_App {

/**
* 项目启动入口
*
* @param args
*/
public static void main(String[] args) {

SpringApplication.run(Provider_App.class, args);

InitInfo.Info(); //初始化内容

// 自动快速地使用缺省Log4j环境。
BasicConfigurator.configure();

}

/**
* 防止xss 和 sql 注入
*
* @return
*/
@SuppressWarnings({ “unchecked”, “rawtypes” })
@Bean
public FilterRegistrationBean xssFilterRegistrationBean() {
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
filterRegistrationBean.setFilter(new XssAndSqlFilter());
filterRegistrationBean.setOrder(1);
filterRegistrationBean.setEnabled(true);
filterRegistrationBean.addUrlPatterns(“/*”);
filterRegistrationBean.setName(“XssAndSqlFilter”);
Map<String, String> initParameters = new HashMap();
initParameters.put(“excludes”, “/favicon.ico,/img/*,/js/*,/css/*”);
initParameters.put(“isIncludeRichText”, “true”);
filterRegistrationBean.setInitParameters(initParameters);
return filterRegistrationBean;
}

}
这个可以注册到的的地方除了springbootappliaction 以外别的 配置也可以注册更具自己选择，最好方springbootappliaction 中 方便省事

2.过滤器
package com.superman.conf.filter;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.PrintWriter;

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 org.apache.commons.lang3.StringUtils;

/**
* 防止
* xss 和 sql 注入漏洞
* @author yushen
* 20200611
*
*/
public class XssAndSqlFilter implements Filter {

/**
* TODO 这个可以注册到的的地方除了springbootappliaction 以外别的 配置也可以注册更具自己选择，最好方springbootappliaction 中 方便省事
*
* @Bean
public FilterRegistrationBean xssFilterRegistrationBean() {
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
filterRegistrationBean.setFilter(new XssAndSqlFilter());
filterRegistrationBean.setOrder(1);
filterRegistrationBean.setEnabled(true);
filterRegistrationBean.addUrlPatterns(“/*”);
filterRegistrationBean.setName(“XssAndSqlFilter”);
Map<String, String> initParameters = new HashMap();
initParameters.put(“excludes”, “/favicon.ico,/img/*,/js/*,/css/*”);
initParameters.put(“isIncludeRichText”, “true”);
filterRegistrationBean.setInitParameters(initParameters);
return filterRegistrationBean;
}
*/
@Override
public void destroy() {
// TODO Auto-generated method stub

}

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
String method = “GET”;
String param = “”;
XssAndSqlHttpServletRequestWrapper xssRequest = null;
if (request instanceof HttpServletRequest) {
method = ((HttpServletRequest) request).getMethod();
xssRequest = new XssAndSqlHttpServletRequestWrapper((HttpServletRequest) request);
}
if (“POST”.equalsIgnoreCase(method)) {
param = this.getBodyString(xssRequest.getReader());
if(StringUtils.isNotBlank(param)){
if(xssRequest.checkXSSAndSql(param)){
response.setCharacterEncoding(“UTF-8”);
response.setContentType(“application/json;charset=UTF-8”);
PrintWriter out = response.getWriter();
// out.write(JSONResponseUtil.getWrappedERRString(“您所访问的页面请求中有违反安全规则元素存在，拒绝访问!”));
out.write(“您所访问的页面请求中有违反安全规则元素存在，拒绝访问!”);
return;
}
}
}
if (xssRequest.checkParameter()) {
response.setCharacterEncoding(“UTF-8”);
response.setContentType(“application/json;charset=UTF-8”);
PrintWriter out = response.getWriter();
// out.write(JSONResponseUtil.getWrappedERRString(“您所访问的页面请求中有违反安全规则元素存在，拒绝访问!”));
out.write(“您所访问的页面请求中有违反安全规则元素存在，拒绝访问!”);
return;
}
chain.doFilter(xssRequest, response);
}

@Override
public void init(FilterConfig arg0) throws ServletException {
// TODO Auto-generated method stub

}

// 获取request请求body中参数
public static String getBodyString(BufferedReader br) {
String inputLine;
String str = “”;
try {
while ((inputLine = br.readLine()) != null) {
str += inputLine;
}
br.close();
} catch (IOException e) {
System.out.println(“IOException: ” + e);
}
return str;

}

}

3.XssAndSqlHttpServletRequestWrapper包装器 包装类
package com.superman.conf.filter;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.Vector;
import java.util.regex.Pattern;

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

import org.springframework.util.StreamUtils;

/**
* 过滤器相关
* @author yushen
* 20200611
* 创建XssAndSqlHttpServletRequestWrapper包装器，这是实现XSS过滤的关键，
* 在其内重写了getParameter，getParameterValues，getHeader等方法，对http请求内的参数进行了过滤
*
*/
public class XssAndSqlHttpServletRequestWrapper extends HttpServletRequestWrapper {

HttpServletRequest orgRequest = null;
private Map<String, String[]> parameterMap;
private final byte[] body; //用于保存读取body中数据

public XssAndSqlHttpServletRequestWrapper(HttpServletRequest request) throws IOException{
super(request);
orgRequest = request;
parameterMap = request.getParameterMap();
body = StreamUtils.copyToByteArray(request.getInputStream());
}

// 重写几个HttpServletRequestWrapper中的方法
/**
* 获取所有参数名
*
* @return 返回所有参数名
*/
@Override
public Enumeration<String> getParameterNames() {
Vector<String> vector = new Vector<String>(parameterMap.keySet());
return vector.elements();
}

/**
* 覆盖getParameter方法，将参数名和参数值都做xss & sql过滤。<br/>
* 如果需要获得原始的值，则通过super.getParameterValues(name)来获取<br/>
* getParameterNames,getParameterValues和getParameterMap也可能需要覆盖
*/
@Override
public String getParameter(String name) {
String[] results = parameterMap.get(name);
if (results == null || results.length <= 0)
return null;
else {
String value = results[0];
if (value != null) {
value = xssEncode(value);
}
return value;
}
}

/**
* 获取指定参数名的所有值的数组，如：checkbox的所有数据 接收数组变量 ，如checkobx类型
*/
@Override
public String[] getParameterValues(String name) {
String[] results = parameterMap.get(name);
if (results == null || results.length <= 0)
return null;
else {
int length = results.length;
for (int i = 0; i < length; i++) {
results[i] = xssEncode(results[i]);
}
return results;
}
}

/**
* 覆盖getHeader方法，将参数名和参数值都做xss & sql过滤。<br/>
* 如果需要获得原始的值，则通过super.getHeaders(name)来获取<br/>
* getHeaderNames 也可能需要覆盖
*/
@Override
public String getHeader(String name) {

String value = super.getHeader(xssEncode(name));
if (value != null) {
value = xssEncode(value);
}
return value;
}

/**
* 将容易引起xss & sql漏洞的半角字符直接替换成全角字符
*
* @param s
* @return
*/
private static String xssEncode(String s) {
if (s == null || s.isEmpty()) {
return s;
} else {
s = stripXSSAndSql(s);
}
StringBuilder sb = new StringBuilder(s.length() + 16);
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
switch (c) {
case ‘>’:
sb.append(“＞”);// 转义大于号
break;
case ‘<‘:
sb.append(“＜”);// 转义小于号
break;
// case ‘\”:
// sb.append(“＇”);// 转义单引号
// break;
// case ‘\”‘:
// sb.append(“＂”);// 转义双引号
// break;
case ‘&’:
sb.append(“＆”);// 转义&
break;
case ‘#’:
sb.append(“＃”);// 转义#
break;
default:
sb.append(c);
break;
}
}
return sb.toString();
}

/**
* 获取最原始的request
*
* @return
*/
public HttpServletRequest getOrgRequest() {
return orgRequest;
}

/**
* 获取最原始的request的静态方法
*
* @return
*/
public static HttpServletRequest getOrgRequest(HttpServletRequest req) {
if (req instanceof XssAndSqlHttpServletRequestWrapper) {
return ((XssAndSqlHttpServletRequestWrapper) req).getOrgRequest();
}

return req;
}

/**
*
* 防止xss跨脚本攻击（替换，根据实际情况调整）
*/

public static String stripXSSAndSql(String value) {
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
/** value = value.replaceAll(“”, “”); ***/
// Avoid anything between script tags
Pattern scriptPattern = Pattern.compile(
“<[\r\n| | ]*script[\r\n| | ]*>(.*?)</[\r\n| | ]*script[\r\n| | ]*>”, Pattern.CASE_INSENSITIVE);
value = scriptPattern.matcher(value).replaceAll(“”);
// Avoid anything in a
// src=”http://www.yihaomen.com/article/java/…” type of
// e-xpression
scriptPattern = Pattern.compile(“src[\r\n| | ]*=[\r\n| | ]*[\\\”|\\\’](.*?)[\\\”|\\\’]”,
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll(“”);
// Remove any lonesome </script> tag
scriptPattern = Pattern.compile(“</[\r\n| | ]*script[\r\n| | ]*>”, Pattern.CASE_INSENSITIVE);
value = scriptPattern.matcher(value).replaceAll(“”);
// Remove any lonesome <script …> tag
scriptPattern = Pattern.compile(“<[\r\n| | ]*script(.*?)>”,
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll(“”);
// Avoid eval(…) expressions
scriptPattern = Pattern.compile(“eval\\((.*?)\\)”,
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll(“”);
// Avoid e-xpression(…) expressions
scriptPattern = Pattern.compile(“e-xpression\\((.*?)\\)”,
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll(“”);
// Avoid javascript:… expressions
scriptPattern = Pattern.compile(“javascript[\r\n| | ]*:[\r\n| | ]*”, Pattern.CASE_INSENSITIVE);
value = scriptPattern.matcher(value).replaceAll(“”);
// Avoid vbscript:… expressions
scriptPattern = Pattern.compile(“vbscript[\r\n| | ]*:[\r\n| | ]*”, Pattern.CASE_INSENSITIVE);
value = scriptPattern.matcher(value).replaceAll(“”);
// Avoid onload= expressions
scriptPattern = Pattern.compile(“onload(.*?)=”,
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll(“”);
}
return value;
}

public static boolean checkXSSAndSql(String value) {
boolean flag = false;
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
/** value = value.replaceAll(“”, “”); ***/
// Avoid anything between script tags
Pattern scriptPattern = Pattern.compile(
“<[\r\n| | ]*script[\r\n| | ]*>(.*?)</[\r\n| | ]*script[\r\n| | ]*>”, Pattern.CASE_INSENSITIVE);
flag = scriptPattern.matcher(value).find();
if (flag) {
return flag;
}
// Avoid anything in a
// src=”http://www.yihaomen.com/article/java/…” type of
// e-xpression
scriptPattern = Pattern.compile(“src[\r\n| | ]*=[\r\n| | ]*[\\\”|\\\’](.*?)[\\\”|\\\’]”,
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
flag = scriptPattern.matcher(value).find();
if (flag) {
return flag;
}
// Remove any lonesome </script> tag
scriptPattern = Pattern.compile(“</[\r\n| | ]*script[\r\n| | ]*>”, Pattern.CASE_INSENSITIVE);
flag = scriptPattern.matcher(value).find();
if (flag) {
return flag;
}
// Remove any lonesome <script …> tag
scriptPattern = Pattern.compile(“<[\r\n| | ]*script(.*?)>”,
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
flag = scriptPattern.matcher(value).find();
if (flag) {
return flag;
}
// Avoid eval(…) expressions
scriptPattern = Pattern.compile(“eval\\((.*?)\\)”,
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
flag = scriptPattern.matcher(value).find();
if (flag) {
return flag;
}
// Avoid e-xpression(…) expressions
scriptPattern = Pattern.compile(“e-xpression\\((.*?)\\)”,
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
flag = scriptPattern.matcher(value).find();
if (flag) {
return flag;
}
// Avoid javascript:… expressions
scriptPattern = Pattern.compile(“javascript[\r\n| | ]*:[\r\n| | ]*”, Pattern.CASE_INSENSITIVE);
flag = scriptPattern.matcher(value).find();
if (flag) {
return flag;
}
// Avoid vbscript:… expressions
scriptPattern = Pattern.compile(“vbscript[\r\n| | ]*:[\r\n| | ]*”, Pattern.CASE_INSENSITIVE);
flag = scriptPattern.matcher(value).find();
if (flag) {
return flag;
}
// Avoid onload= expressions
scriptPattern = Pattern.compile(“onload(.*?)=”,
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
flag = scriptPattern.matcher(value).find();
if (flag) {
return flag;
}
}
return flag;
}

public final boolean checkParameter() {
Map<String, String[]> submitParams = new HashMap(parameterMap);
Set<String> submitNames = submitParams.keySet();
for (String submitName : submitNames) {
Object submitValues = submitParams.get(submitName);
if ((submitValues instanceof String)) {
if (checkXSSAndSql((String) submitValues)) {
return true;
}
} else if ((submitValues instanceof String[])) {
for (String submitValue : (String[])submitValues){
if (checkXSSAndSql(submitValue)) {
return true;
}
}
}
}
return false;
}

@Override
public BufferedReader getReader() throws IOException {
return new BufferedReader(new InputStreamReader(getInputStream()));
}

@Override
public ServletInputStream getInputStream() throws IOException {
final ByteArrayInputStream bais = new ByteArrayInputStream(body);
return new ServletInputStream() {

@Override
public int read() throws IOException {
return bais.read();
}

@Override
public boolean isFinished() {
// TODO Auto-generated method stub
return false;
}

@Override
public boolean isReady() {
// TODO Auto-generated method stub
return false;
}

@Override
public void setReadListener(ReadListener arg0) {
// TODO Auto-generated method stub

}
};
}

}

4.修改验证登录代码 这里只写了基础的 了解意思即可
//2.校验手机号和token号
String sql = “select * from userlogin where phonenum='”+phonenum+”‘ and token='”+tokennum+”‘ “;
//3.不准确退回从新输入登录
try {
int resttokenjy = aed.queryApiInfo(sql).size();
if(resttokenjy != 1){
return new AsyncResult<>(“验证码不正确！”);
}
} catch (Exception e) {
log.error(e.toString());
return new AsyncResult<>(“验证码不正确！”);
}
重点是加上try 如果发生异常 也好吧信息异步返回 回去
更具业务需求，返回自己特殊更多的内容，有需要进行其他安全设施的也可以像安全记录中进行记录数据
如发现危险用户 恶意攻击系统等

5.测试内容

6.测试结果
Loading class `com.mysql.jdbc.Driver’. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver’. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
2020-06-12 10:02:22.045 INFO com.alibaba.druid.pool.DruidDataSource – {dataSource-1} inited
2020-06-12 10:02:22.192 ERROR com.superman.global.service.usercheck.UserLoginCheckService – org.springframework.jdbc.BadSqlGrammarException:
### Error querying database. Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘＃” at line 1
### The error may exist in file [D:\eclipseworks_2020\superporject\super_portal\target\classes\mybatis\mapper\ds1\ApiOneDao.xml]
### The error may involve com.superman.globaldao.ds1.ApiOneDao.queryApiInfo-Inline
### The error occurred while setting parameters
### SQL: select id from userlogin where phonenum=’15600000000′ and token=” or 1=1 ＃’
### Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘＃” at line 1
; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘＃” at line 1

7.反黑客小介绍（黑客大哥们好小弟这没啥大用O(∩_∩)O~，但是对待小白黑客还好）
ok 我们这里可以看到 原本 半角代码 # 已经变成全角代码＃ 如此以来就可以完全防止sql 和xss 注入了，当然，还有有高手
攻击破解系统，这时候就是继续再加点过滤器和系统安全防护策略，还有安全校验来实现，
总体来讲
要向防止系统被攻破
就要自己多方几堵墙 阻挡破解的墙越多，黑客发现这么多阻挡，由于利益的权衡后发现，破解你的系统有些亏，大部分就
去破解别的系统去了^_^ , 这说法仅当参考哈，还是你们想和黑客战斗的大哥们去战斗比试比试吧，
pk 下谁更牛 棒棒哒 O(∩_∩)O

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版权声明：本文为CSDN博主「宇神城主_蒋浩宇」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/weixin_42749765/article/details/106709588