How to unescape string in GWT

问题

I used SafeHtmlUtils.htmlEscape(text) and I want to use opposite function. Could you tell me if in gwt there is function like unescapeHtml()

回答1:

If (and please only if) you can trust the text not to contain malicious content, you can use

import com.google.gwt.user.client.ui.HTML;

String unescaped = new HTML(text).getText();

回答2:

If nothing has been done to do this trick (say some GWT project around), you can implement it in a JSNI method using javascript snip you can found here : [CSS/HTML/Js] Unescaping HTML in javascript

回答3:

I wanted something easy to unit test so I implemented 'htmlUnescape()' which reverses the effects of SafeHtmlUtils.htmlEscape() and SafeHtmlBuilder.appendEscapedLines(). They all exist in the 'shared' package and work fine in a JVM.

This utility class might be useful to you...

private static class Replacer {
    private final String target;
    private final String replacement;
    private final RegExp re;

    private Replacer(String target, String replacement) {
        this.target = target;
        this.replacement = replacement;
        re = RegExp.compile(RegExp.quote(target), "g");
    }

    public String process(String s) {
        if (s.contains(target)) return re.replace(s, replacement);
        return s;
    }
}

来源：https://stackoverflow.com/questions/11537003/how-to-unescape-string-in-gwt