sql注入，XSS攻击可通过继承HttpServletRequestWrapper重写request实现修改request请求

最新推荐文章于 2025-03-05 22:10:59 发布

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最新推荐文章于 2025-03-05 22:10:59 发布

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分类专栏： Java 文章标签： java

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本文介绍了如何通过继承HttpServletRequestWrapper来重写request请求，以防御SQL注入和XSS攻击。首先，创建一个继承ServletRequestWrapper的类，接着实现过滤敏感内容的逻辑。然后，设置一个过滤器来应用这个自定义请求包装器。最后，在web.xml配置文件中配置该过滤器以拦截并处理所有请求。

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首先创建一个类继承ServletRequestWrapper类，重写request请求

import java.io.StringReader;
import java.io.StringWriter;
import java.text.CharacterIterator;
import java.text.StringCharacterIterator;

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

import com.blogspot.radialmind.html.HTMLParser;
import com.blogspot.radialmind.xss.XSSFilter;

public class ServletRequestWrapper extends HttpServletRequestWrapper {

	HttpServletRequest orgRequest = null;
	private static String[] keywords ={"|","&",";","$","%","@","'","\'","\"","/>","<>","()","+","cr","lf","\\","ASCII",
			"../","./","*","=","char","sysopen","execute","exec","net user","/add"
			,"create","modify","union","join","select","insert", "update", "delete", "drop", "truncate"};
	public servletRequestWrapper(HttpServletRequest request) {
		super(request);
		orgRequest = request;
	}

	/**
	 * 覆盖getParameter方法，将参数名和参数值都做xss过滤。