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Error - Can not find the tag library descriptor for “/struts-tags”

I'm receiving this error on my jsp file - 'Can not find the tag library descriptor for "/struts-tags"'

Strange thing is my app still seems to work.

I'm following the tutorials at - http://struts.apache.org/2.x/docs/using-struts-2-tags.html

Here is the code.

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> 
<%@ taglib prefix="s" uri="/struts-tags" %> 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
  <head> 
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 
      <title>Hello World!</title> 
  </head> 
  <body>  
      <h2><s:property value="messageStore.message" /></h2>  
      <p>I've said hello <s:property value="helloCount" /> times!</p>  
      <p><s:property value="messageStore" /></p> 
  </body>
</html>  

Thanks

Have you added the struts2-core-.jar to the libraries of the project? If you have try to clean the project.

In ECLIPSE: Right click on the project and select the option "Validate". That's all.

The same thing happened to me. I am using Maven to compile. So, I disabled and re-enabled Maven in my project and that solved it.

I faced similar problem. This is what I did to resolve the issue.

1.Select Project and right click. 2.Click on properties. 3.Click on libraries tab. 4.Click on 'Add Jars'. 5.Add relavent jar for your error.

hope this helps. Thanks.

I had this problem because I copied the libraries manually and directly into the folder WEB-INF/lib of the project and eclipse doesn't see them (I suggest you copy any necessary libraries into WEB-INF/lib only through eclipse!). So only a refresh of the project solved the problem for me because all the other solutions didn't work!!

(I'm using Eclipse Kepler unber Ubuntu)

This is probably Eclipse getting a bit 'confused' rather than a genuine error.

I had the same thing yesterday when working through a Struts 2 tutorial, but it disappeared after opening/closing the JSPs.

add struts2-core-.jar to the project

download it here

http://struts.apache.org/development/2.x/index.html

正如威廉所说,这听起来像是您的 IDE 可能不知道标签库的 TLD 在您的项目中的位置,但是一旦打包并运行,它就可以正常工作。

go to Project tab > Clean.. Even if cleaning the project doesn't clear the error, right-click on the project and click refresh

Then right-click on the project, go to properties, Java Build Path >> 'Order and Export' tab >> make sure JRE library and Maven dependencies are checked.

that would probably solve it as it did for me

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