Question

javax.servlet.HttpServletRequest cannot be resolved

Asked by: dbyrne03

I am writing a class in eclipse.  I want one of the contructors to take a single argument, a reference to a javax.servlet.HttpServletRequest object.  typing

public classname(javax.servlet.HttpServletRequest request){
}

tells me that javax.servlet.HttpServletRequest cannot be resolved.  I also cannot import javax.servlet.* .  Do I need to somehow 'reference' a special jar file in my project?

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Asked On
2004-12-26 at 10:43:41ID21253990
Tags

jar

,

cannot

,

resolved

Topic

Java Server Pages (JSP)

Participating Experts
5
Points
125
Comments
8

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Answers

 

by: ldbkuttyPosted on 2004-12-26 at 10:58:11ID: 12903778

Add:

import javax.servlet.http.HttpServletRequest;

PS: Add J2EE library container to your project build path.

and do

public ClassName(HttpServletRequest request) {
}

 

by: bloodredsunPosted on 2004-12-26 at 11:21:37ID: 12903827

>>PS: Add J2EE library container to your project build path.

called J2EE.jar, then most recent version of which is 1.4. and cann be found here http://java.sun.com/j2ee/1.4/download.html#sdk

 

by: tbone343Posted on 2004-12-26 at 11:36:17ID: 12903864

If you are using the latest Tomcat, look for \tomcat\common\lib\servlet-api.jar and add that to the classpath.  If you are using another servlet container, it is often called "servlet.jar".

 

by: dbyrne03Posted on 2004-12-26 at 17:04:08ID: 12904562

I found servlet-api.jar in an old jboss installation dir.  I placed it under "C:\Program Files\eclipse\servlet-api.jar", right clicked on my project -> Properties and added it via the Libraries tab.  It works now, but how does this change the classpath?  It sure doesn't change the classpath used when eclipse is fired up, right?  Also, I'm not too thrilled about the path of servlet-api.jar (see above), can you tell me what might be a more apropriate path?

 

by: tbone343Posted on 2004-12-26 at 17:42:38ID: 12904621

This jar file just contains a bunch of class files.  By adding it to your project libraries, you are putting it on the classpath (that is, when you use certain classes in your code, it will search through everything in your project's libraries).  You can simply cut and paste this jar using windows explorer and put it anywhere you want first and then add it to your libraries tab if that is what you prefer.

 

by: ldbkuttyPosted on 2004-12-26 at 17:43:20ID: 12904622

>> I'm not too thrilled about the path of servlet-api.jar (see above), can you tell me what might be a more apropriate path?

(1) Place all your general "JAR" files like javax.servlet.jar, mail,jar, etc.. (including your app. server JAR's) in a general folder. (say, C:\Program Files\eclipse\mylibs ).

(2) In your Eclipse, Window->Preference->Java->Build Path->Classpath Variables, give that path with name, say MYECLIPSE_LIB_HOME.

So, for example if you are creating a new project with the above program, but didn't included the MYECLIPSE_LIB_HOME in your Java Build Path-Libraries. On writing:

public ClassName(HttpServletRequest request) {
}

Your eclipse auto-debugger(!) will ask you to load the PATH which you have already defined in your Classpath Variables.

 

by: raj3060Posted on 2004-12-27 at 14:43:15ID: 12909373

Did you try control + shift + O to load libraries automatically. If not try it.

 

by: patbinPosted on 2005-04-09 at 11:05:16ID: 13744389

add servlet.jar to your project build path

20120131-EE-VQP-002

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