xss攻击如何修复

xss攻击的修复方案：

1.对输入的数据进行HTML转义，使其不会识别为可执行脚本，例如：

String result = HtmlUtils.htmlEscape(source);

2.根据白名单的标签和属性对数据进行过滤，对可执行的脚本进行清除，例如：

<!-- https://mvnrepository.com/artifact/org.jsoup/jsoup -->
<dependency>
    <groupId>org.jsoup</groupId>
    <artifactId>jsoup</artifactId>
    <version>1.13.1</version>
</dependency>

String result = Jsoup.clean(source, Whitelist.basic());

//默认的基础白名单配置
public static Whitelistbasic(){
return new Whitelist()
.addTags(
"a","b","blockquote","br","cite","code","dd","dL","dt","em",
"i","Li","oL","p","pre","q","small","span","strike","strong","sub"
"sup","U","uL")
.addAttributes(tag:"a", ...attributes:"href")
.addAttributes(tag:”bLockquote", ...attributes:"cite")
.addAttributes(tag:"q", ...attritoutes:"cite")
.addProtocols(tag:"a", attribute:"href", ...potocols:"ftp", "http", "https", "mailto")
.addProtocols(tag:"bLockquote", attribute:"cite", ...protocolo:"http", "https")
.addProtocols(tag:"cite",attribute:"cite", ...protocols:"http", "https")
.addEnforcedAttribute(tag:"a",attribute:"rel",value:"nofollow")
;
}

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