Commit 31ac928b16d3e630ccaf9b2f0a64afeb6ce485d2
1 parent
196089d7
1.防sql注入漏洞filter
Showing
1 changed file
with
46 additions
and
0 deletions
src/main/java/com/bsth/filter/SQLInjectFilter.java
0 → 100644
| 1 | +package com.bsth.filter; | ||
| 2 | + | ||
| 3 | +import org.springframework.stereotype.Component; | ||
| 4 | + | ||
| 5 | +import javax.servlet.FilterChain; | ||
| 6 | +import javax.servlet.ServletException; | ||
| 7 | +import javax.servlet.http.HttpServletRequest; | ||
| 8 | +import javax.servlet.http.HttpServletResponse; | ||
| 9 | +import java.io.IOException; | ||
| 10 | +import java.util.Enumeration; | ||
| 11 | + | ||
| 12 | +@Component | ||
| 13 | +public class SQLInjectFilter extends BaseFilter{ | ||
| 14 | + | ||
| 15 | + @Override | ||
| 16 | + public void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain chain) | ||
| 17 | + throws IOException, ServletException { | ||
| 18 | + //获取请求对象中的参数名称 | ||
| 19 | + Enumeration enu = request.getParameterNames(); | ||
| 20 | + | ||
| 21 | + //遍历枚举 | ||
| 22 | + while (enu.hasMoreElements()) { | ||
| 23 | + //取参数名 | ||
| 24 | + String paraName = (String)enu.nextElement(); | ||
| 25 | + | ||
| 26 | + //取参数值并校验 | ||
| 27 | + if (isSqlInject(request.getParameter(paraName))) { | ||
| 28 | + return; | ||
| 29 | + } | ||
| 30 | + } | ||
| 31 | + //校验完毕，放行 | ||
| 32 | + chain.doFilter(request, response); | ||
| 33 | + } | ||
| 34 | + | ||
| 35 | + private static boolean isSqlInject(String injectStr) { | ||
| 36 | + String injStr = "'|and|exec|create|insert|select|delete|update|count|*|%|chr|mid|master|truncate|drop|char|declare|;|or|-|+|,"; | ||
| 37 | + String injStrArr[] = injStr.split("\\|"); | ||
| 38 | + injectStr = injectStr.toLowerCase(); | ||
| 39 | + for (int i = 0; i < injStrArr.length; i++) { | ||
| 40 | + if (injectStr.indexOf(injStrArr[i]) >= 0) { | ||
| 41 | + return true; | ||
| 42 | + } | ||
| 43 | + } | ||
| 44 | + return false; | ||
| 45 | + } | ||
| 46 | +} |