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修复字符串无法被反转义问题

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This commit is contained in:
RuoYi 2021-11-01 15:02:47 +08:00
parent 181f62c15e
commit bd09e5b11c
1 changed files with 23 additions and 11 deletions
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34
ruoyi-common/src/main/java/com/ruoyi/common/utils/html/EscapeUtil.java
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@ -69,26 +69,37 @@ public class EscapeUtil
*/
private static String encode(String text)
{
int len;
if ((text == null) || ((len = text.length()) == 0))
if (StringUtils.isEmpty(text))
{
return StringUtils.EMPTY;
}
StringBuilder buffer = new StringBuilder(len + (len >> 2));
final StringBuilder tmp = new StringBuilder(text.length() * 6);
char c;
for (int i = 0; i < len; i++)
for (int i = 0; i < text.length(); i++)
{
c = text.charAt(i);
if (c < 64)
if (c < 256)
{
buffer.append(TEXT[c]);
tmp.append("%");
if (c < 16)
{
tmp.append("0");
}
tmp.append(Integer.toString(c, 16));
}
else
{
buffer.append(c);
tmp.append("%u");
if (c <= 0xfff)
{
// issue#I49JU8@Gitee
tmp.append("0");
}
tmp.append(Integer.toString(c, 16));
}
}
return buffer.toString();
return tmp.toString();
}
/**
@ -145,11 +156,12 @@ public class EscapeUtil
public static void main(String[] args)
{
String html = "<script>alert(1);</script>";
String escape = EscapeUtil.escape(html);
// String html = "<scr<script>ipt>alert(\"XSS\")</scr<script>ipt>";
// String html = "<123";
// String html = "123>";
System.out.println(EscapeUtil.clean(html));
System.out.println(EscapeUtil.escape(html));
System.out.println(EscapeUtil.unescape(html));
System.out.println("clean: " + EscapeUtil.clean(html));
System.out.println("escape: " + escape);
System.out.println("unescape: " + EscapeUtil.unescape(escape));
}
}