Skip to content
Home » Can Not Find The Tag Library Descriptor For Http Java.Sun.Comjspjstlcore | Taglib Directive In Jsp | Jsp Taglib Directive | Hindi | Servlet #31 모든 답변

Can Not Find The Tag Library Descriptor For Http Java.Sun.Comjspjstlcore | Taglib Directive In Jsp | Jsp Taglib Directive | Hindi | Servlet #31 모든 답변

당신은 주제를 찾고 있습니까 “can not find the tag library descriptor for http java.sun.comjspjstlcore – taglib directive in jsp | jsp taglib directive | hindi | Servlet #31“? 다음 카테고리의 웹사이트 https://ro.taphoamini.com 에서 귀하의 모든 질문에 답변해 드립니다: ro.taphoamini.com/wiki. 바로 아래에서 답을 찾을 수 있습니다. 작성자 Learn Code With Durgesh 이(가) 작성한 기사에는 조회수 25,596회 및 좋아요 631개 개의 좋아요가 있습니다.

Table of Contents

can not find the tag library descriptor for http java.sun.comjspjstlcore 주제에 대한 동영상 보기

여기에서 이 주제에 대한 비디오를 시청하십시오. 주의 깊게 살펴보고 읽고 있는 내용에 대한 피드백을 제공하세요!

d여기에서 taglib directive in jsp | jsp taglib directive | hindi | Servlet #31 – can not find the tag library descriptor for http java.sun.comjspjstlcore 주제에 대한 세부정보를 참조하세요

In this video we will learn what is Taglib directive in jsp.
how to use taglib directive ?
What is jstl jsp standard tag libraray?
How to use jstl in our own jsp page?
how to print variable using jstl ?
what is need of taglib directive?
taglib directive in jsp | jsp taglib directive | hindi | Servlet #31

Learn Python in One Video in HIndi : https://youtu.be/7GYHAJdHFbE
Learn Core Java Basics : https://youtu.be/9yBlFPKiCdY
Learn Servlet in Hindi : https://www.youtube.com/playlist?list=PL0zysOflRCel5BSXoslpfDawe8FyyOSZb

Learn JDBC Porgramming : https://www.youtube.com/playlist?list=PL0zysOflRCenjuvOwumYLG9TCsEQZrV2M
Learn c,java,python,kotlin basics : https://www.onlyjavatech.com/
TechSoft INDIA official website : https://www.techsoftindia.co.in/
Durgesh Tiwari Website java: https://www.durgeshkumartiwari.com/

can not find the tag library descriptor for http java.sun.comjspjstlcore 주제에 대한 자세한 내용은 여기를 참조하세요.

62 – Stack Overflow

Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core”. Based on one of your previous questions you’re using Tomcat 7.

+ 여기에 표시

Source: stackoverflow.com

Date Published: 10/7/2022

View: 3341

taglib – Java67

This misunderstanding causes lots of trouble while solving “Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core”. We will see how the …

+ 여기를 클릭

Source: www.java67.com

Date Published: 11/23/2022

View: 5719

By admin – Javatips.net

Cannot Find The Tag Library Descriptor For http://java.sun.com/jsp/jstl/core describes about How to resolve the error message Cannot Find …

+ 더 읽기

Source: www.javatips.net

Date Published: 10/27/2021

View: 4954

Can not find the tag library descriptor for http java sun com jsp …

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>. I already placed the JSTL JAR file in the WEB-INF/lib directory.

+ 여기에 더 보기

Source: www.edureka.co

Date Published: 4/9/2022

View: 5667

‘Can not find the tag library’ error in the jsp page in OSGi web …

I have jsp page with the following taglib definitions: <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><%@ taglib prefix="fn" ...

+ 여기에 표시

Source: www.ibm.com

Date Published: 4/10/2022

View: 4479

java+web – CodeAntenna

Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core. java+web. Use taglib definition in your JSP or better include it in every page …

+ 더 읽기

Source: codeantenna.com

Date Published: 3/7/2021

View: 3353

Tech Help Notes

Can not find the tag library descriptor for http://java.sun.com/jsp/jstl/core. Use taglib definition in your JSP or better include it in …

+ 여기에 자세히 보기

Source: techhelpnotes.com

Date Published: 7/3/2022

View: 5241

I changed the version of jstl from 1.0 to 1.2. The result … – Birost

Can not find the tag library descriptor for … The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar.

+ 여기에 자세히 보기

Source: blog.birost.com

Date Published: 10/13/2021

View: 2252

주제와 관련된 이미지 can not find the tag library descriptor for http java.sun.comjspjstlcore

주제와 관련된 더 많은 사진을 참조하십시오 taglib directive in jsp | jsp taglib directive | hindi | Servlet #31. 댓글에서 더 많은 관련 이미지를 보거나 필요한 경우 더 많은 관련 기사를 볼 수 있습니다.

taglib directive in jsp | jsp taglib directive | hindi | Servlet  #31
taglib directive in jsp | jsp taglib directive | hindi | Servlet #31

주제에 대한 기사 평가 can not find the tag library descriptor for http java.sun.comjspjstlcore

  • Author: Learn Code With Durgesh
  • Views: 조회수 25,596회
  • Likes: 좋아요 631개
  • Date Published: 2019. 9. 17.
  • Video Url link: https://www.youtube.com/watch?v=S3bO8GpX3D8

How install TLD file in eclipse?

Just go for New->XML file and name the file as yourname. tld thats all !

How to fix can not find the tag library descriptor for http java sun com jsp jstl core?

To solve this you must remove the wrong JAR file, download jstl-1.2. jar and drop it in its entirety in /WEB-INF/lib. That’s all. You do not need to extract it nor to fiddle in the project’s Build Path.

How do I create a tag library descriptor in eclipse?

Writing the Tag Library Descriptor
  1. Create a text file with an appropriate name and the extension . …
  2. Add the contents of the TLD, embedded in a <taglib> element, as indicated in steps 4-7. …
  3. Identify the tag library: <tlib-version>version_number</tlib-version> …
  4. Define a tag library validator (Optional). …
  5. Define a tag.

Can not find the tag library descriptor for tags?

What is “Can not find the tag library descriptor”
  1. Inside the WEB-INF directory of your web application.
  2. Inside a subdirectory of WEB-INF folder like WEB-INF/TLDs.
  3. Inside the META-INF directory of a JAR file stored in the WEB-INF/lib folder.

What is TLD file in Java?

If you want to redistribute your tag files or implement your custom tags with tag handlers written in Java, you must declare the tags in a tag library descriptor (TLD). A tag library descriptor is an XML document that contains information about a library as a whole and about each tag contained in the library.

How do you create a tag library?

You can create an initial tag library by going to People > Tags > Create tags (or View All). Otherwise, you’ll just set your naming conventions to begin with and add tags as you go to build up your library.

What is Taglib URI?

The taglib <uri> is just a name, not a location

See also  미드 영어 회화 핵심 패턴 233 Pdf | [1] 영어회화 핵심패턴 233 / 음성강의 및 원어민 예문 2시간 연속듣기 21911 명이 이 답변을 좋아했습니다

The <uri> element in the TLD is a unique name for the tag library. That’s it. It does NOT need to represent any actual location (path or URL, for example). It simply has to be a name—the same name you use in the taglib directive.

How many tags are provided in Jstl explain any two?

JSTL is a standard tag library that is composed of five tag libraries. Each of these tag libraries represents separate functional area and is used with a prefix. Below table describes the tag libraries available in JSTL.

What is a tag library?

A tag library defines a collection of custom actions. The tags can be used directly by developers in manually coding a JSP page, or automatically by Java development tools. A tag library must be portable between different JSP container implementations.

What is Taglib URI in JSP?

The taglib directive declares that your JSP page uses a set of custom tags, identifies the location of the library, and provides means for identifying the custom tags in your JSP page. The taglib directive follows the syntax given below − <%@ taglib uri = “uri” prefix = “prefixOfTag” >

What is Rtexprvalue in TLD?

rtexprvalue means Runtime Expression Value. It means the attribute can support scriptlet values.

How do I import a File into Eclipse?

Suppose you have already created an Eclipse project, and you want to import the project into Eclipse.
  1. Open File->Import.
  2. Select “Existing Projects into Workspace” from the Selection Wizard.
  3. Select Next to get the Import Wizzard. …
  4. Make sure the Project you want is checked, then hit Finish.

How do I run a Java ZIP file in eclipse?

Start Eclipse, go to File->Import->General->Existing Projects Into Workspace Select the archive file option, and browse to the downloaded zip file and click Finish.

How do I import a RAR File into Eclipse?

To import a connector project RAR file using the wizard, complete the following steps: In the Java™ EE perspective, click File > Import . Under Select an import source, click J2EE > RAR file . In the Connector file field, enter the full path and name of the connector RAR file that you want to import.

How do I export a zip file in eclipse?

In Eclipse:
  1. File > Export.
  2. Select the General > Archive File export wizard.
  3. Select the project(s) to be exported.
  4. Choose the archive file type (ZIP or TAR), and other options.
  5. Enter the archive file name.
  6. Click Finish.

Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core”

Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core”

Based on one of your previous questions you’re using Tomcat 7. In that case you need JSTL 1.2. However, you’ve there a jstl.jar file while JSTL 1.2 has clearly the version number included like so jstl-1.2.jar . The sole filename jstl.jar is typical for JSTL 1.0 and 1.1. This version requires a standard.jar along in /WEB-INF/lib which contains the necessary TLD files. However, in your particular case the standard.jar is clearly missing in /WEB-INF/lib and that’s exactly the reason why the taglib URI couldn’t be resolved.

To solve this you must remove the wrong JAR file, download jstl-1.2.jar and drop it in its entirety in /WEB-INF/lib . That’s all. You do not need to extract it nor to fiddle in project’s Build Path.

Don’t forget to remove that loose c.tld file too. It absolutely doesn’t belong there. This is indeed instructed in some poor tutorials or answers elsewhere in the Internet. This is a myth caused by a major misunderstanding and misconfiguration. There is never a need to have a loose JSTL TLD file in the classpath, also not in previous JSTL versions.

In case you’re using Maven, use the below coordinate:

javax.servlet jstl 1.2

You should also make sure that your web.xml is declared conform at least Servlet 2.4 and thus not as Servlet 2.3 or older. Otherwise EL expressions inside JSTL tags would in turn fail to work. Pick the highest version matching your target container and make sure that you don’t have a anywhere in your web.xml . Here’s a Servlet 3.0 (Tomcat 7) compatible example:

###See also:

create .tld files in Eclipse (IDEs and Version Control forum at Coderanch)

this forum made possible by our volunteer staff, including …

Marshals:

Campbell Ritchie

Tim Cooke

Ron McLeod

Jeanne Boyarsky

Paul Clapham

Sheriffs:

Liutauras Vilda

Henry Wong

Devaka Cooray

Saloon Keepers:

Tim Moores

Stephan van Hulst

Tim Holloway

Al Hobbs

Carey Brown

Bartenders:

Can not find the tag library descriptor for http java sun com jsp jstl core

If you have a jstl.jar file while JSTL 1.2 has clearly the version number included like so jstl-1.2.jar. The sole filename jstl.jar is typical for JSTL 1.0 and 1.1. This version requires a standard.jar along in /WEB-INF/lib which contains the necessary TLD files. However, in your particular case the standard.jar is clearly missing in /WEB-INF/lib and that’s exactly the reason why the taglib URI couldn’t be resolved. To solve this you must remove the wrong JAR file, download jstl-1.2.jar and drop it in its entirety in /WEB-INF/lib. That’s all. You do not need to extract it nor to fiddle in the project’s Build Path. Don’t forget to remove that loose c.tld file too. It absolutely doesn’t belong there. This is indeed instructed in some poor tutorials or answers elsewhere in the Internet. This is a myth caused by a major misunderstanding and misconfiguration. There is never a need to have a loose JSTL TLD file in the classpath, also not in previous JSTL versions.

In case you’re using Maven, use the below coordinate:

javax.servlet jstl 1.2

You should also make sure that your web.xml is declared conform to at least Servlet 2.4 and thus not as Servlet 2.3 or older. Otherwise EL expressions inside JSTL tags would in turn fail to work. Pick the highest version matching your target container and make sure that you don’t have a anywhere in your web.xml. Here’s a Servlet 3.0 (Tomcat 7) compatible example:

Creating a Tag Library Descriptor

Create a text file with an appropriate name and the extension .tld, and save it in the WEB-INF directory of the Web application containing your JSP(s). Content beneath the WEB-INF directory is non-public and is not served over HTTP by WebLogic Server.

Add the contents of the TLD, embedded in a element, as indicated in steps 4-7. The contents include elements containing information about the tag library and elements that define each tag. For example:

(Optional) Provides information on the scripting variables defined by this tag. A translation-time error occurs if a tag that has one or more variable subelements has a TagExtraInfo class that returns a non-null object.

(Optional) Contains the name of a file containing a large (32 x 32) icon image. The file name is a relative path within the tag library. The image must be either in the JPEG or GIF format, and the file name must end with the suffix “.jpg” or “.gif” respectively. The icon can be used by tools.

(Optional) Contains the name of a file containing a small (16 x 16) icon image. The file name is a relative path within the tag library. The image must be either in the JPEG or GIF format, and the file name must end with the suffix “.jpg” or “.gif” respectively. The icon can be used by tools.

(Optional) Contains a short name that is intended to be displayed by tools.

(Required) Assigns a short name to this tag library. This element is not used by WebLogic Server.

(Required) Describes the JSP specification version (number) this tag library requires in order to function. The default is 2.0.

Define a tag.

Use a separate element to define each new tag in the tag library. The element takes the following nested tags:

tag_name

(Required) Defines the name of the tag. This is used when referencing the tag in a JSP file, after the “:” symbol, For example:

For more information, see New and Changed JSP Features In This Release.

package.class.name

(Required) Declares the tag handler class that implements the functionality of this tag. Specify the fully qualified package name of the class.

Locate the class file under the WEB-INF/classes directory, in a directory structure reflecting the package name. You can also package the classes in a tag library jar file; for more information, see Packaging a JSP Tag Library as JAR File.

package.class.name

(Optional) Declares the subclass of TagExtraInfo that describes the scripting variables introduced by this tag. If your tag does not define new scripting variables, it does not use this element. Specify the fully qualified package name of the class. You can perform validation of the tag’s attributes in this class.

Place the class files under the WEB-INF/classes directory of your Web application, under a directory structure reflecting the package name. You can also package the classes in a tag library jar file; for more information, see Packaging a JSP Tag Library as JAR File.

empty | JSP | scriptless | tagdependent

(Optional) Defines the content of the tag body.

empty means that you use the tag in the empty tag format in the JSP page. For example:

JSP means that the contents of the tag can be interpreted as a JSP and that you must use the tag in the body tag format. For example:

scriptless means that the contents of the tag do not contain any scripts or scripting elements.

tagdependent means that your tag will interpret the contents of the body as a non-JSP (for example, an SQL statement).

(Optional) Defines the name of the attribute as it appears in the tag element in the JSP page. For example:

Use a separate element to define each attribute that the tag can take. Tag attributes allow the JSP author to alter the behavior of your tags.

myAttribute true | false

(Optional) Defines whether this attribute has optional use in the JSP page. If not defined here, the default is false — that is, the attribute is optional by default. If true is specified, and the attribute is not used in a JSP page, a translation-time error occurs.

true | false

(Optional) Defines whether this attribute can take a scriptlet expression as a value, allowing it to be dynamically calculated at request time. If this element is not specified, the value is presumed to be false .

Cannot Find The Tag Library Descriptor For “http://java.sun.com/jsp/jstl/core”

Home / jsp / Cannot Find The Tag Library Descriptor For “http://java.sun.com/jsp/jstl/core”

Cannot Find The Tag Library Descriptor For “http://java.sun.com/jsp/jstl/core” By admin | December 13, 2011 | Updated : May 22, 2020 jsp, jstl,

Cannot Find The Tag Library Descriptor For “http://java.sun.com/jsp/jstl/core describes about How to resolve the error message “Cannot Find The Tag Library Descriptor For “http://java.sun.com/jsp/jstl/core””.

If you are getting this error, Please check whether all libraries are in the project’s classpath,

If it is already in classpath and still getting this error, then you will have an older version of JSTL in your class path.

You need to download the latest versions of JSTL jar file, in order to resolve this error message.

You can see URI (namespace) changes of different JSP / Servlet versions below.

You need to download Tomcat 9 JSTL 1.2 Following jar must be in classpath jstl-1.2.jar Note for JSTL 1.2 there is just one jar file instead of two

Incorrect

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

Correct

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>

JSTL1.0 supports JSP 1.2 & Servlet 2.3 (tomcat 4)

Core c http://java.sun.com/jstl/core XML Processing x http://java.sun.com/jstl/xml Localization & Formatting fmt http://java.sun.com/jstl/fmt Database Access sql http://java.sun.com/jstl/sql

JSTL 1.1 supports JSP 2.0 & Servlet 2.4 (tomcat 5)

Core c http://java.sun.com/jsp/jstl/core XML Processing x http://java.sun.com/jsp/jstl/xml Localization & Formatting fmt http://java.sun.com/jsp/jstl/fmt Database Access sql http://java.sun.com/jsp/jstl/sql

JSTL 1.2 supports JSP 2.1 & Servlet 2.5 (tomcat 6)

Core c http://java.sun.com/jsp/jstl/core XML Processing x http://java.sun.com/jsp/jstl/xml Localization & Formatting fmt http://java.sun.com/jsp/jstl/fmt Database Access sql http://java.sun.com/jsp/jstl/sql

Can not find the tag library descriptor for http java sun com jsp jstl core

If you have a jstl.jar file while JSTL 1.2 has clearly the version number included like so jstl-1.2.jar. The sole filename jstl.jar is typical for JSTL 1.0 and 1.1. This version requires a standard.jar along in /WEB-INF/lib which contains the necessary TLD files. However, in your particular case the standard.jar is clearly missing in /WEB-INF/lib and that’s exactly the reason why the taglib URI couldn’t be resolved. To solve this you must remove the wrong JAR file, download jstl-1.2.jar and drop it in its entirety in /WEB-INF/lib. That’s all. You do not need to extract it nor to fiddle in the project’s Build Path. Don’t forget to remove that loose c.tld file too. It absolutely doesn’t belong there. This is indeed instructed in some poor tutorials or answers elsewhere in the Internet. This is a myth caused by a major misunderstanding and misconfiguration. There is never a need to have a loose JSTL TLD file in the classpath, also not in previous JSTL versions.

In case you’re using Maven, use the below coordinate:

javax.servlet jstl 1.2

You should also make sure that your web.xml is declared conform to at least Servlet 2.4 and thus not as Servlet 2.3 or older. Otherwise EL expressions inside JSTL tags would in turn fail to work. Pick the highest version matching your target container and make sure that you don’t have a anywhere in your web.xml. Here’s a Servlet 3.0 (Tomcat 7) compatible example:

Can not find the tag library descriptor for http:

Can not find the tag library descriptor for http://java.sun.com/jsp/jstl/core

Use taglib definition in your JSP or better include it in every page by the first line.

<%@ taglib prefix=c uri=http://java.sun.com/jsp/jstl/core %>

Theres also fix jstl-1.2 dependency in your project. Also use servlet specification at least 2.4 in your web.xml .

The maven dependencies are (maven is a open source development tool)

jstl jstl 1.2 compile taglibs standard 1.1.2 compile

In the web.xml start writing

EDIT:

Id like to add a note that @informatik01 has mentioned in the comment about newer version of JSTL libraries available from Maven repository: JSTL version 1.2.1 API and JSTL 1.2.1 .

I had the same problem even after I added jar files for jstl and standard. For me, it resolved after I added a Targeted runtime for my project.

Go to Project Properties > Targeted Runtimes and select the server you are using (Tomcat 7.0 for me).

Can not find the tag library descriptor for http://java.sun.com/jsp/jstl/core

create a libs folder in the inside WEB-INF directory and add jstl, standard jars as below.

Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core”

Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core” appears

I changed the version of jstl from 1.0 to 1.2. The result is just fine. I don’t understand why, but I understand what someone else wrote below.

The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar

Possibly one:

The web project has the above problem, it is found to be a version problem:

The statement of JSTL 1.0 is:

<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core " %>

The statement of JSTL1.1 is:

<%@ taglib prefix="c" uri=http://java.sun.com/jsp/jstl/core %>

In the project, the jstl 1.2 version is already used, and all the pages use <%@ taglib prefix="c" uri=http://java.sun.com/jsp/jstl/core %> this way. After javaee5, there is only one jar package called jstl.jar. There is no standard.jar package, and the tld file is also packaged into the jar. The solution of configuring jsp-config in the web.xml file is also a cloud.

Possibility two:

Finally, it was found that the problem was that the jstl.jar package was in the ide project, but not under the application WEB-INF/lib released by tomcat. This is a problem of the tool release project. Copying a jar package will solve the problem in the past.

>>jstl.jar no

Use the jstl document, here is a document:

http://www.mularien.com/blog/2008/04/24/how-to-reference-and-use-jstl-in-your-web-application/

How to Reference and Use JSTL in your Web Application

As a frequent contributor to the Spring Framework user forums, I have noticed a common trend among people new to Spring MVC – they really don’t understand how to use JSTL and EL in their Spring-driven JSPs.

Although Spring MVC supports flexibility in choosing a view technology, in my [back of the napkin] estimate, at least 80% of the time it is paired with JSP and JSTL. Unfortunately, since JSP was pushed out about 4-5 years ago, a lot of the information that you find on the web is extremely dated, often going back to JSTL 1.0 syntax (or, gasp, using scriptlets!). In this article I’ll clear up the confusion around how to use JSTL with various app servers and webapp versions.

Since JSP implementation and support varies widely among app server vendors (and versions of an app server), a lot of Spring MVC newbies get stuck just getting simple JSTL expressions to work. Since Spring relies on JSTL EL expressions for output of bound fields (assuming you’re not using the form. taglibs), people often wrongly assume that something is wrong with Spring when their Spring-bound data doesn’t show up on the page.

Here’s a hint: if you can’t get a simple (non-Spring-related!) expression like ${2+2} to work, no expressions will work! (In a properly functioning servlet container, the prior expression should output “ 4″ on the page).

I set out to take some common application server configurations, combine them with various flavors of JSP/JSTL support, and see what happened.

The Importance of Servlet Version and web.xml

Let us review the following reference table:

JSP/Servlet Version

Servlet VersionJSP VersionJSTL VersionJava EE Version

2.52.11.25

2.42.01.11.4

2.31.21.01.2

What Does this mean to me?

The most important thing is to figure out what version of the Java EE web stack (Servlet/JSP) you are using. There are 2 aspects that factor into this:

What version of Java EE/servlet spec does your servlet container support?

What version of Java EE/servlet spec have you declared in your deployment descriptor (web.xml)?

Here’s an example of what to look for in web.xml:

web-app-25 …

You can see the’version=”2.5″’ designation in here. This means that within this web application, we will be able to use JSP 2.1 and JSTL 1.2 features.

OK, How do I use JSTL in my Page?

A very common problem that I have seen with new Spring users is that they don’t understand how to reference the JSTL tag libraries on their pages. Important!: You need to identify the version of web application you are using first.

Web Application v2.5 and v2.4

To use EL Expressions: You do not need . Simply insert EL expressions onto the page: ${2+2}

To use JSTL tag libraries (c, fmt, etc): Reference as follows:

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

Web Application v2.3

To use EL Expressions: You do need . Raw EL expressions on the page will not work. e.g.

To use JSTL tag libraries (c, fmt, etc): Reference as follows:

<%@taglib prefix="c" uri="http://java.sun.com/jsp/core" %>

What about the _rt Taglibs Like core_rt?

The following type of URI will also work, in JSTL 1.2 and 1.1:

<%@taglib prefix="c" uri="http://java.sun.com/jstl/core_rt" %>

However, this is not desired. You should never have to reference the _rt versions of taglibs (e.g. core_rt).

Do I need to include a JSTL Implementation with my Web Application?

Obviously, there are a lot of application servers out there. I tested this with the following:

Tomcat 6.0

Tomcat 5.5

Tomcat 5.0

JBOSS 4.2

Glassfish 2

Of these, JBOSS and Glassfish ship with JSTL implementations out of the box. Tomcat does not ship with a JSTL implementation. I have previously blogged about this here.

I did not test other application servers, simply because these are the ones I most commonly see referenced in the Spring forums. Websphere is also used, but I didn’t have access to it (and, frankly, didn’t want to spend the 8 hours and tens of gigs of downloads it would take to install it ).

Testing Methodology

For those who are interested, here’s the testing methodology I used to come to the conclusions above.

I created 6 web applications. The 6 web applications are as follows:

webapp-25: Servlet version 2.5 declared in web.xml, JSTL RI not included in WEB-INF/lib

webapp-25-jstlri: Servlet version 2.5 declared in web.xml, JSTL 1.2 RI included in WEB-INF/lib

webapp-24: Servlet version 2.4 declared in web.xml, JSTL RI not included in WEB-INF/lib

webapp-24-jstl11: Servlet version 2.4 declared in web.xml, JSTL 1.1 RI included in WEB-INF/lib

webapp-23: Servlet version 2.3 declared in web.xml, JSTL RI not included in WEB-INF/lib

webapp-23-jstl10: Servlet version 2.3 declared in web.xml, JSTL 1.0 RI included in WEB-INF/lib

In each web application, I created 4 JSP pages with the following content:

Some simple math: ${2+2}

Some simple math with c:out:

Some simple math with c2:out:

You can see there are 3 tests in the page. The goal of the tests are as follows:

${2+2}: does inline EL evaluation work with this webapp version?

: is the’c’ namespace automatically provided by the container?

is the’c2′ namespace explicitly provided by the given taglib declaration? (see next section for how the c2 taglib is declared)

For each of the 4 JSP pages, I varied how the JSTL core taglib was declared:

test_no_taglib_decl.jsp: Contained no taglib declarations at all

test_c2_jsp_jstl_core_taglib_decl.jsp: Contained the taglib declaration:

<%@taglib prefix="c2" uri="http://java.sun.com/jsp/jstl/core" %>

test_c2_jstl_core_taglib_decl.jsp: Contained the taglib declaration:

<%@taglib prefix="c2" uri="http://java.sun.com/jstl/core" %>

test_c2_jstl_core_rt_taglib_decl.jsp: Contained the taglib declaration:

<%@taglib prefix="c2" uri="http://java.sun.com/jstl/core_rt" %>

In a typical scenario where the container supports JSP 2.0+, what you would expect to see is the following:

Some simple math: 4

Some simple math with c:out:

Some simple math with c2:out: 4

What Happens if You Have the Wrong Declarations

Some of the errors you may get if you don’t have things declared right:

On Tomcat

Declaring the wrong taglib:

org.apache.jasper.JasperException:/test_c2_jstl_core_taglib_decl.jsp(11,32) According to TLD or attribute directive in tag file, attribute value does not accept any expressions

org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)

org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)

No JSTL implementation:

org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application

org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:51)

org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)

org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application

org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:51)

org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)

On JBOSS

Since JBOSS also uses the Apache Jasper JSP compiler, the errors are basically exactly the same as those listed above.

On Glassfish

org.apache.jasper.JasperException:/test_c2_jstl_core_taglib_decl.jsp(11,32) PWC6236: According to TLD or attribute directive in tag file, attribute value does not accept any expressions

키워드에 대한 정보 can not find the tag library descriptor for http java.sun.comjspjstlcore

다음은 Bing에서 can not find the tag library descriptor for http java.sun.comjspjstlcore 주제에 대한 검색 결과입니다. 필요한 경우 더 읽을 수 있습니다.

이 기사는 인터넷의 다양한 출처에서 편집되었습니다. 이 기사가 유용했기를 바랍니다. 이 기사가 유용하다고 생각되면 공유하십시오. 매우 감사합니다!

사람들이 주제에 대해 자주 검색하는 키워드 taglib directive in jsp | jsp taglib directive | hindi | Servlet #31

  • taglib directive in jsp
  • jsp directive in hindi
  • what is taglib in hindi
  • what is jsp taglib in jsp hindi
  • how to use taglib tag
  • why to use jsp directive in hindi
  • what is jstl in hindi
  • why to use jstl
  • jsp standard tag library in hindi
  • jstl in jsp hindi
  • jsp by durgesh

taglib #directive #in #jsp #| #jsp #taglib #directive #| #hindi #| #Servlet # ##31


YouTube에서 can not find the tag library descriptor for http java.sun.comjspjstlcore 주제의 다른 동영상 보기

주제에 대한 기사를 시청해 주셔서 감사합니다 taglib directive in jsp | jsp taglib directive | hindi | Servlet #31 | can not find the tag library descriptor for http java.sun.comjspjstlcore, 이 기사가 유용하다고 생각되면 공유하십시오, 매우 감사합니다.