How to tell Java which StringEscapeUtils.escapeXML() to use???

Question

I'm trying to use the StringEscapeUtils.escapeXML() function from org.apache.commons.lang...

There are two versions of that function, one which expects (Writer, String) and one which just expects (String)....

http://commons.apache.org/lang/api/org/apache/commons/lang/StringEscapeUtils.html#escapeXml(java.lang.String)

I'm trying to use the version that just expects the String parameter without the Writer, but Java is complaining that I've not given it a Writer.

How do I use this in my program so that I don't need a Writer?

String escXml = StringEscapeUtils.escapeXml(attr.get());
xml = xml.concat("<"+attr.getID()+">"+escXml+"</"+attr.getID()+">");

I've also tried just doing it inline in the string itself.

xml = xml.concat("<"+attr.getID()+">"+StringEscapeUtils.escapeXml(attr.get())+"</"+attr.getID()+">");

Both of these attempts have given me the error about it expecting the Writer though. Can anyone help me with this?

Thanks, Matt

Answer 1

What exactly is the compiler error message?

is it possible that you're using a different version of the commons library that does not have the 1-parameter method?

Answer 2

I've pasted the error below. This is in some JSP and Jetty is what is throwing the error.

I copied the commons-lang-2.4.jar file into Jetty so I think I'm using the right one. Perhaps not?

Caused by:

org.apache.jasper.JasperException: PWC6033: Unable to compile class for JSP

PWC6197: An error occurred at line: 9 in the jsp file: /zimlet/_dev/edu_wiu_directory/ldap.jsp PWC6199: Generated servlet error: The method escapeXml(Writer, String) in the type StringEscapeUtils is not applicable for the arguments (Object)

at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:107) at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:280) at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:347) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:400) at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:344) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:477) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:371) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093) at com.zimbra.cs.zimlet.ZimletFilter.doFilter(ZimletFilter.java:202) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:81) at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:132) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:716) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:406) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:211) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.handler.rewrite.RewriteHandler.handle(RewriteHandler.java:350) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.Server.handle(Server.java:313) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)

Answer 3

The error message is telling you that you are passing an Object into the method, not a String.

If you are sure that the Object is a String, then you'll need to cast it to a String first.

If this doesn't work, please post the actual code that is giving you trouble.