在纯Java代码中输出HTML时,是否有一种推荐的方法来转义<,>,"和&字符?(除了手动执行以下操作之外)。
String source = "The less than sign (<) and ampersand (&) must be escaped before using them in HTML";
String escaped = source.replace("<", "<").replace("&", "&"); // ...
在纯Java代码中输出HTML时,是否有一种推荐的方法来转义<,>,"和&字符?(除了手动执行以下操作之外)。
String source = "The less than sign (<) and ampersand (&) must be escaped before using them in HTML";
String escaped = source.replace("<", "<").replace("&", "&"); // ...
当前回答
对于使用谷歌番石榴的人:
import com.google.common.html.HtmlEscapers;
[...]
String source = "The less than sign (<) and ampersand (&) must be escaped before using them in HTML";
String escaped = HtmlEscapers.htmlEscaper().escape(source);
其他回答
在android (API 16或更高版本)上,您可以:
Html.escapeHtml(textToScape);
或低空气污染指数:
TextUtils.htmlEncode(textToScape);
简单的方法:
public static String escapeHTML(String s) {
StringBuilder out = new StringBuilder(Math.max(16, s.length()));
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
if (c > 127 || c == '"' || c == '\'' || c == '<' || c == '>' || c == '&') {
out.append("&#");
out.append((int) c);
out.append(';');
} else {
out.append(c);
}
}
return out.toString();
}
基于https://stackoverflow.com/a/8838023/1199155(放大器不在那里)。根据http://www.w3.org/TR/html4/sgml/entities.html的说法,if子句中选中的四个字符是唯一低于128的字符
对于使用谷歌番石榴的人:
import com.google.common.html.HtmlEscapers;
[...]
String source = "The less than sign (<) and ampersand (&) must be escaped before using them in HTML";
String escaped = HtmlEscapers.htmlEscaper().escape(source);
StringEscapeUtils from Apache Commons Lang:
import static org.apache.commons.lang.StringEscapeUtils.escapeHtml;
// ...
String source = "The less than sign (<) and ampersand (&) must be escaped before using them in HTML";
String escaped = escapeHtml(source);
版本3:
import static org.apache.commons.lang3.StringEscapeUtils.escapeHtml4;
// ...
String escaped = escapeHtml4(source);
stringescapeutils现在已弃用。您现在必须使用org.apache.commons.text.StringEscapeUtils by
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-text</artifactId>
<version>${commons.text.version}</version>
</dependency>