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  1. POstack overflow servlet tutorial error
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    copied!<pre><code> $ java -version java version "1.6.0_45" Java(TM) SE Runtime Environment (build 1.6.0_45-b06-451-10M4406) Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01-451, mixed mode) </code></pre> <p>Tomcat version: 7.0.40</p> <p>I'm following the beginning servlet/jsp tutorial here:</p> <p><a href="https://stackoverflow.com/tags/servlets/info">https://stackoverflow.com/tags/servlets/info</a></p> <p>and I am getting this error:</p> <blockquote> <p>HTTP Status 500 - The absolute uri: <a href="http://java.sun.com/jsp/jstl/functions" rel="nofollow noreferrer">http://java.sun.com/jsp/jstl/functions</a> cannot be resolved in either web.xml or the jar files deployed with this application</p> </blockquote> <p>Which looks like it's coming from the .jsp file which begins with this line:</p> <pre><code>&lt;%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %&gt; &lt;!DOCTYPE html&gt; &lt;html lang="en"&gt; </code></pre> <p>I compiled my servlet like this:</p> <pre><code>~/java_programs/modernServlet$ javac -cp /Library/Tomcat/lib/servlet-api.jar -d classes src/com/example/controller/HelloServlet.java </code></pre> <p>And then I copied that file to the same directory structure under WEB-INF classes in the Tomcat directory. Is there some other jar file I should be including in the classpath?</p> <p>==== </p> <p>Okay, I downloaded and copied the jstl jar to Tomcat's lib directory, and and now I get all kinds of compile errors:</p> <pre><code>$ javac -cp "/Library/Tomcat/lib/servlet-api.jar;/Library/Tomcat/lib/jstl-1.2.jar" -d classes src/com/example/controller/HelloServlet.java src/com/example/controller/HelloServlet.java:7: package javax.servlet does not exist import javax.servlet.ServletException; ^ src/com/example/controller/HelloServlet.java:8: package javax.servlet.annotation does not exist import javax.servlet.annotation.WebServlet; ^ src/com/example/controller/HelloServlet.java:9: package javax.servlet.http does not exist import javax.servlet.http.HttpServlet; ^ src/com/example/controller/HelloServlet.java:10: package javax.servlet.http does not exist import javax.servlet.http.HttpServletRequest; ^ src/com/example/controller/HelloServlet.java:11: package javax.servlet.http does not exist import javax.servlet.http.HttpServletResponse; ^ src/com/example/controller/HelloServlet.java:14: cannot find symbol symbol: class HttpServlet public class HelloServlet extends HttpServlet { ^ src/com/example/controller/HelloServlet.java:13: cannot find symbol symbol: class WebServlet @WebServlet("/hello") ^ src/com/example/controller/HelloServlet.java:17: cannot find symbol symbol : class HttpServletRequest location: class com.example.controller.HelloServlet protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ^ src/com/example/controller/HelloServlet.java:17: cannot find symbol symbol : class HttpServletResponse location: class com.example.controller.HelloServlet protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ^ src/com/example/controller/HelloServlet.java:17: cannot find symbol symbol : class ServletException location: class com.example.controller.HelloServlet protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ^ src/com/example/controller/HelloServlet.java:23: cannot find symbol symbol : class HttpServletRequest location: class com.example.controller.HelloServlet protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ^ src/com/example/controller/HelloServlet.java:23: cannot find symbol symbol : class HttpServletResponse location: class com.example.controller.HelloServlet protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ^ src/com/example/controller/HelloServlet.java:23: cannot find symbol symbol : class ServletException location: class com.example.controller.HelloServlet protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ^ src/com/example/controller/HelloServlet.java:16: method does not override or implement a method from a supertype @Override ^ src/com/example/controller/HelloServlet.java:22: method does not override or implement a method from a supertype @Override ^ 15 errors </code></pre>
 

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