how to display a text with tags in jsp

问题

I want to display a text called

"welcome<to>Jsp"

In page source also i'm seeing as "welcomeJsp"

But in HTML its displaying as "welcomeJsp" alone. Please guide me.

回答1:

You have to escape these characters..

welcome<to>Jsp

I would advice using Apache's StringEscapeUtils class(available in org.apache.commons.lang ) function escapeHtml() for escaping HTML.

StringEscapeUtils.escapeHtml("welcome<to>Jsp")

回答2:

"welcome<to>Jsp"


> (greater than) - (>)
&lt; (less than)    - (<)

These characters need to be encoded this way to actually display them.

回答3:

Use JSTL <c:out> tag or fn:escapeXml() function.

<c:out value="welcome<to>Jsp" />

or

${fn:escapeXml('welcome<to>Jsp')}

You can even use it on model values.

<c:out value="${bean.property}" />

or

${fn:escapeXml(bean.property)}

Those two should by the way always be used when it concerns user-controlled input, you're otherwise totally open to XSS attack holes. See also our JSP wiki page and What is the general concept behind XSS?

来源：https://stackoverflow.com/questions/13303128/how-to-display-a-text-with-tags-in-jsp