您可以在您的 grails 应用程序中安装以下 Java 代码。
import java.io.IOException;
import java.util.StringTokenizer;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
public class AutomaticCssInliner {
public static void main(String[] args) throws IOException {
final String style = "style";
final String html = "<html>" + "<body> <style>"
+ "body{background:#FFC} \n p{background:red}"
+ "body, p{font-weight:bold} </style>"
+ "<p>...</p> </body> </html>";
// Document doc = Jsoup.connect("http://mypage.com/inlineme.php").get();
Document doc = Jsoup.parse(html);
Elements els = doc.select(style);// to get all the style elements
for (Element e : els) {
String styleRules = e.getAllElements().get(0).data().replaceAll(
"\n", "").trim(), delims = "{}";
StringTokenizer st = new StringTokenizer(styleRules, delims);
while (st.countTokens() > 1) {
String selector = st.nextToken(), properties = st.nextToken();
Elements selectedElements = doc.select(selector);
for (Element selElem : selectedElements) {
String oldProperties = selElem.attr(style);
selElem.attr(style,
oldProperties.length() > 0 ? concatenateProperties(
oldProperties, properties) : properties);
}
}
e.remove();
}
System.out.println(doc);// now we have the result html without the
// styles tags, and the inline css in each
// element
}
private static String concatenateProperties(String oldProp, String newProp) {
oldProp = oldProp.trim();
if (!newProp.endsWith(";"))
newProp += ";";
return newProp + oldProp; // The existing (old) properties should take precedence.
}
}