jsp - how to precompile .jspf files with jasper2 in ant -


.jspf files "java server fragments" -- jsp intended inclusion () in other .jsp files.

precompiling .jsp files handy because exposes syntax errors, missing imports, java code errors, etc. @ build time rather run time. we've struggled typos in .jsp not showing until view page. i'm putting automatic task ant precompile jsp files. (see http://tomcat.apache.org/tomcat-7.0-doc/jasper-howto.html#web_application_compilation).

tomcat's jsp compiler jasper2 has built in assumption jsp files have '.jsp' file extension. goes against current recommendations use .jspf file extensions when appropriate.

the question: how code ant task invoke jasper2 (aka jspc) precompile .jsp files, including .jspf files?

-- answer

(see discussion below correction other answers related this)

use ant helper tasks build textual list of .jspf files compile , pass jasper2 task in jspfiles attribute. follows:

<target name="precompilejsp">      <taskdef name="jasper2" classname="org.apache.jasper.jspc">        <classpath refid="compile.classpath"/>     </taskdef>  <!-- guts of solution -->     <!-- jasper2 refuses precompile .jspf unless list them specifically. boo hoo. -->     <fileset id="jspffiles" dir="${appdir.build}">        <include name="**/*.jspf"/>       <include name="**/*.jsp"/>      </fileset>  <!-- turns set textual comma-separated list -->     <pathconvert targetos="unix" pathsep="," property="app.jspflist" refid="jspffiles"/>     <!-- echo message="jspf files are: ${app.jspflist}"/ -->  <!-- precompilation invoking jasper2 -->     <jasper2               validatexml="false"               uriroot="${appdir.build}"              jspfiles="${app.jspflist}"              webxmlfragment="${precompile_tmp_dir}/generated_web.xml"               outputdir="${precompile_tmp_dir}">     </jasper2>      <!-- compile .java sources generate error messages. -->    <mkdir    dir="${precompile_tmp_dir}/web-inf/classes"/>    <javac srcdir="${precompile_tmp_dir}"           destdir="${precompile_tmp_dir}/web-inf/classes"             debug="${compile.debug}"       deprecation="${compile.deprecation}"          optimize="${compile.optimize}"         includeantruntime="false">         <classpath refid="compile.classpath"/>     </javac>  </target>

--- discussion

it has been stated in referenced what .jspf file extension? how compile it? (and elsewhere on web) .jspf files not compiled on own, , textually included via <jsp:include> references other files. claim , reasoning wrong. tomcat jasper .jsp compiler in fact compile .jspf stand-alone during normal display-time processing of .jsp , related .jspf files. can trivially seen inspecting /usr/share/tomcat/work/catalina/localhost/org/youdomain/yourpath/includefile_jspf.java. .java file generated stand-alone code .jspf file. bottom line <jsp:include> not work c's #include(), rather includes @ runtime output of jspf file in output of including-file, rather including source of jspf file source of .jsp file c have.

the claim in referenced answer web-inf/somejsp.jsp files cannot viewed end users false. common put .jsp files in web-inf , reference them in servlet code gateways mapped in web.xml or other servlet request forwarding mechanisms:

  requestdispatcher dispatcher = servctxthis.getrequestdispatcher( "/web-inf/jsp/thewholepage.jsp" );
  dispatcher.forward(request, response);

so, specific, .jsp files in /web-inf cannot directly viewed end users, can forwarded-to servlet or other jsp file, , comprise entire web response -- <html> ... </html>. (.jspf, on other hand, contain snippet or fragment of html response --- <div>header-content</div>, example.


Comments

Post a Comment

Popular posts from this blog

jquery - How can I dynamically add a browser tab? -

since using iframes house external pages are, accounts "not preferred method" , disallowed sites (flickr, one), want dynamically generate browser tabs. e.g., when user submits form, want dynamically generate tab on browser in response submitted. e.g., might want add new tab url like: http://www.bigsurgarrapata.com/contact how in jquery? you want form target attribute action attribute. http://www.w3schools.com/tags/att_form_target.asp browsers have ultimate control on result of target attribute open new tab value of _blank. <form action="contact_submit.php" target="_blank" method="post">
Read more

keyboard - C++ GetAsyncKeyState alternative -

i using windows.h library's getasynckeystate function define key pushed on keyboard . here program returns int value of pushed key example. #include <iostream> #include <windows.h> using namespace std; int main (){ char i; for(i=8;i<190;i++){ if(getasynckeystate(i)== -32767){ cout<<int (i)<<endl; } } return 0; } but trying make opengl simple game , function appeared slow . there function not need cycle 180 times , if statement . thanks you're trying make opengl game, you're going use glfw. if that's case can away using glfwgetkey() such: if (glfwgetkey(glfw_key_up) == glfw_press) {...} if (glfwgetkey(glfw_key_down) == glfw_press) {...} that method nicely explained in tutorial 6 opengl-tutorial.org . should start first tutorial of beginners tutorials , later intermediate tutorials . if you're going make win32 window can listen wm_keydown or wm_keyup messages , virtua
Read more

android - java.net.UnknownHostException(Unable to resolve host “URL”: No address associated with hostname) -

i developing app testing asp.net webservice in android.for simple webservice adding 2 numbers used.where numbers passed parameters.the result in dialogue.the webserver works in local. when application runs following result exception.i provided internet permission in manifest. java.net.unknownhostexception(unable resolve host “ http://url.com/ ”: no address associated hostname) my code given below main activity public static string rslt=""; /** called when activity first created. */ @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); button b1=(button)findviewbyid(r.id.button1); final alertdialog ad=new alertdialog.builder(this).create(); b1.setonclicklistener(new onclicklistener() { @override public void onclick(view arg0) { // todo auto-generated method stub try {
Read more