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fix: jstl dependency conflict#2317

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jo-elimu wants to merge 3 commits intomainfrom
2054-remove-jakarta-jstl-warning-messages
Closed

fix: jstl dependency conflict#2317
jo-elimu wants to merge 3 commits intomainfrom
2054-remove-jakarta-jstl-warning-messages

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@jo-elimu jo-elimu self-assigned this Jul 29, 2025
@jo-elimu jo-elimu requested a review from a team as a code owner July 29, 2025 07:42
@jo-elimu jo-elimu requested review from alexander-kuruvilla, eymaal and vrudas and removed request for a team July 29, 2025 07:42
@jo-elimu jo-elimu linked an issue Jul 29, 2025 that may be closed by this pull request
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coderabbitai bot commented Jul 29, 2025

Walkthrough

The dependency tree was updated to reflect a version bump of the main artifact from 2.6.111-SNAPSHOT to 2.6.112-SNAPSHOT. Two Jakarta-related dependencies (jakarta.servlet.jsp.jstl-api and jakarta.el-api) and the lombok dependency were removed, while the org.glassfish.web:jakarta.servlet.jsp.jstl:3.0.1 dependency remains.

Changes

Cohort / File(s) Change Summary
Dependency Tree Update
pom-dependency-tree.txt
Updated main artifact version; removed jakarta.servlet.jsp.jstl-api, jakarta.el-api, and lombok dependencies; retained org.glassfish.web:jakarta.servlet.jsp.jstl:3.0.1.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Assessment against linked issues

Objective Addressed Explanation
Remove Jakarta JSTL warning messages during application launch (#2054)

Assessment against linked issues: Out-of-scope changes

No out-of-scope changes found.

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Actionable comments posted: 0

🧹 Nitpick comments (1)
pom-dependency-tree.txt (1)

22-34: Legacy commons-lang:2.6 still present

Both commons-lang:2.6 and commons-lang3:3.15.0 are packaged. They sit in different packages (org.apache.commons.lang vs org.apache.commons.lang3), so there’s no clash, but commons-lang is EOL (2010). If nothing in your codebase truly needs it, exclude it transitively to slim the WAR and prevent accidental usage of outdated APIs.

📜 Review details

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Review profile: CHILL
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📥 Commits

Reviewing files that changed from the base of the PR and between 6361048 and e4eb12b.

⛔ Files ignored due to path filters (1)
  • pom.xml is excluded by !**/*.xml
📒 Files selected for processing (1)
  • pom-dependency-tree.txt (1 hunks)
🧰 Additional context used
🧠 Learnings (2)
📓 Common learnings
Learnt from: jo-elimu
PR: elimu-ai/webapp#0
File: :0-0
Timestamp: 2025-05-03T08:01:30.217Z
Learning: The elimu-ai/webapp repository has a dependency on ai.elimu:model (version 2.0.97) that provides shared model classes and enums. The Language enum should be imported from ai.elimu.model.v2.enums.Language instead of creating local duplicates.
pom-dependency-tree.txt (2)

Learnt from: jo-elimu
PR: elimu-ai/webapp#0
File: :0-0
Timestamp: 2025-05-03T08:01:30.217Z
Learning: The elimu-ai/webapp repository has a dependency on ai.elimu:model (version 2.0.97) that provides shared model classes and enums. The Language enum should be imported from ai.elimu.model.v2.enums.Language instead of creating local duplicates.

Learnt from: jo-elimu
PR: #2312
File: src/main/java/ai/elimu/entity/analytics/LetterSoundLearningEvent.java:19-31
Timestamp: 2025-07-27T03:40:02.040Z
Learning: In the elimu.ai webapp project, the database schema file at src/main/resources/META-INF/jpa-schema-export.sql is auto-generated from JPA entity annotations, so manual updates to this file are not needed when adding new entity fields.

🔇 Additional comments (2)
pom-dependency-tree.txt (2)

81-82: Duplicate JSTL artefacts removed – issue #2054 resolved

Only org.glassfish.web:jakarta.servlet.jsp.jstl:3.0.1 remains; the conflicting jakarta.servlet.jsp.jstl-api (3.0.0) and jakarta.el-api (5.0.0) jars that Jetty complained about are no longer in the tree. This should eliminate the startup warnings.


105-106: Confirm container compatibility for jakarta.servlet.jsp-api:3.0.0

The JSP API is scoped provided, which is correct. Double-check that the Jetty version used in mvn jetty:run ships a matching JSP 3.0 implementation; a version mismatch would yield ClassNotFoundException/LinkageError at runtime.

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codecov bot commented Jul 29, 2025

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 17.12%. Comparing base (65cd53c) to head (c4e3d2e).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff            @@
##               main    #2317   +/-   ##
=========================================
  Coverage     17.12%   17.12%           
  Complexity      462      462           
=========================================
  Files           261      261           
  Lines          7741     7741           
  Branches        897      897           
=========================================
  Hits           1326     1326           
  Misses         6333     6333           
  Partials         82       82           

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@jo-elimu
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@coderabbitai I'm still getting "org.apache.taglibs.standard.tlv.JstlXmlTLV scanned from multiple locations", even after excluding the jakarta.servlet.jsp.jstl artifactId:

<dependency>
      <groupId>org.glassfish.web</groupId>
      <artifactId>jakarta.servlet.jsp.jstl</artifactId>
      <version>3.0.1</version>
      <exclusions>
        <exclusion>
          <groupId>org.glassfish.web</groupId>
          <artifactId>jakarta.servlet.jsp.jstl</artifactId>
        </exclusion>
      </exclusions>
    </dependency>
mvn jetty:run
[WARNING] org.apache.taglibs.standard.tlv.JstlSqlTLV scanned from multiple locations: jar:file:///C:/Users/Nya/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/3.0.1/jakarta.servlet.jsp.jstl-3.0.1.jar!/org/apache/taglibs/standard/tlv/JstlSqlTLV.class, jar:file:///C:/Users/Nya/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/2.0.0/jakarta.servlet.jsp.jstl-2.0.0.jar!/org/apache/taglibs/standard/tlv/JstlSqlTLV.class
[WARNING] org.apache.taglibs.standard.tlv.JstlXmlTLV$Handler scanned from multiple locations: jar:file:///C:/Users/Nya/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/3.0.1/jakarta.servlet.jsp.jstl-3.0.1.jar!/org/apache/taglibs/standard/tlv/JstlXmlTLV$Handler.class, jar:file:///C:/Users/Nya/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/2.0.0/jakarta.servlet.jsp.jstl-2.0.0.jar!/org/apache/taglibs/standard/tlv/JstlXmlTLV$Handler.class
[WARNING] org.apache.taglibs.standard.tlv.JstlXmlTLV scanned from multiple locations: jar:file:///C:/Users/Nya/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/3.0.1/jakarta.servlet.jsp.jstl-3.0.1.jar!/org/apache/taglibs/standard/tlv/JstlXmlTLV.class, jar:file:///C:/Users/Nya/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/2.0.0/jakarta.servlet.jsp.jstl-2.0.0.jar!/org/apache/taglibs/standard/tlv/JstlXmlTLV.class

How can we make sure that jakarta.servlet.jsp.jstl/2.0.0 is being excluded?

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coderabbitai bot commented Jul 29, 2025

Tip

For best results, initiate chat on the files or code changes.

🧩 Analysis chain

@jo-elimu I can see the issue with your exclusion configuration. You're trying to exclude jakarta.servlet.jsp.jstl from itself, which won't work. The 2.0.0 version must be coming from another dependency as a transitive dependency. Let me analyze your current dependency tree to identify the source.


🏁 Script executed:

#!/bin/bash
# First, let's examine the current pom.xml structure
echo "=== Current pom.xml ==="
cat pom.xml

echo -e "\n=== Dependency tree to identify source of version 2.0.0 ==="
mvn dependency:tree | grep -i jstl -A 2 -B 2

echo -e "\n=== More detailed analysis of JSTL dependencies ==="
mvn dependency:tree -Dincludes="*jstl*" -Dverbose

Length of output: 652


Let me locate and examine the pom.xml file and dependency tree information:


🏁 Script executed:

#!/bin/bash
# Find pom.xml files in the repository
echo "=== Finding pom.xml files ==="
fd pom.xml

echo -e "\n=== Examining main pom.xml ==="
# Try common locations for pom.xml
if [ -f "pom.xml" ]; then
    cat pom.xml
elif [ -f "src/main/pom.xml" ]; then
    cat src/main/pom.xml
else
    # Find and show the first pom.xml found
    POMFILE=$(fd pom.xml | head -1)
    if [ -n "$POMFILE" ]; then
        echo "Found pom.xml at: $POMFILE"
        cat "$POMFILE"
    fi
fi

echo -e "\n=== Looking for dependency tree file ==="
fd -t f -e txt | grep -i dependency

echo -e "\n=== Examining dependency tree file if exists ==="
if [ -f "pom-dependency-tree.txt" ]; then
    cat pom-dependency-tree.txt
fi

Length of output: 9979


@jo-elimu Looking at your dependency tree, I can see the issue. The dependency tree shows only org.glassfish.web:jakarta.servlet.jsp.jstl:jar:3.0.1:compile, but you're still getting version 2.0.0 loaded. This suggests a few possibilities:

  1. Incorrect exclusion configuration: Your current exclusion is trying to exclude the same artifact from itself, which doesn't work
  2. Cached artifacts: The 2.0.0 version might be cached in your local Maven repository
  3. Hidden transitive dependency: There might be another dependency bringing in the 2.0.0 version that's not obvious

Let me search for any other potential sources:

Based on what I can see, here are the steps to resolve this:

Solution

  1. Remove the incorrect exclusion - you cannot exclude an artifact from itself
  2. Clear your local Maven repository cache for JSTL artifacts
  3. Add proper dependency management if needed

Step 1: Fix your dependency declaration

Replace your current dependency with:

<dependency>
    <groupId>org.glassfish.web</groupId>
    <artifactId>jakarta.servlet.jsp.jstl</artifactId>
    <version>3.0.1</version>
</dependency>

Remove the <exclusions> block entirely since it's incorrect.

Step 2: Clear local Maven cache

Run these commands to clear cached JSTL artifacts:

Step 3: Check for dependency management

If the issue persists, you might need to add dependency management in your pom.xml:

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>jakarta.servlet.jsp.jstl</artifactId>
            <version>3.0.1</version>
        </dependency>
    </dependencies>
</dependencyManagement>

This forces Maven to use version 3.0.1 regardless of what transitive dependencies might suggest.

Try these steps and let me know if you're still seeing the warnings!


🏁 Script executed:

#!/bin/bash
# Look for any other potential sources of JSTL dependencies
echo "=== Searching for any JSTL-related dependencies in the tree ==="
grep -i "jstl\|jsp" pom-dependency-tree.txt

echo -e "\n=== Checking for multiple pom.xml files ==="
fd pom.xml

echo -e "\n=== Looking for any Jakarta servlet JSP dependencies ==="
grep -i "jakarta.servlet.jsp" pom-dependency-tree.txt

echo -e "\n=== Searching for any references to version 2.0.0 in the tree ==="
grep "2\.0\.0" pom-dependency-tree.txt

Length of output: 1055


🏁 Script executed:

# Remove cached JSTL artifacts
rm -rf ~/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/2.0.0/
rm -rf ~/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/

# Or clear entire local repository (more thorough but slower)
# rm -rf ~/.m2/repository/

Length of output: 171


Perfect! Now I can see exactly what's happening. The dependency tree shows only version 3.0.1, and there are no conflicting JSTL dependencies in your project. The issue is most likely a Maven local repository cache problem.

Root Cause Analysis

Your dependency tree is clean and shows only:

  • org.glassfish.web:jakarta.servlet.jsp.jstl:jar:3.0.1:compile
  • jakarta.servlet.jsp:jakarta.servlet.jsp-api:jar:3.0.0:provided

The 2.0.0 versions I found in the tree are for completely different Jakarta APIs (transaction and inject), not JSTL.

Complete Solution

1. Fix your dependency declaration (remove the broken exclusion)

<dependency>
    <groupId>org.glassfish.web</groupId>
    <artifactId>jakarta.servlet.jsp.jstl</artifactId>
    <version>3.0.1</version>
</dependency>

Remove the entire <exclusions> block - it's logically incorrect to exclude an artifact from itself.

2. Clear Maven cache and rebuild

# Clear JSTL-specific cache
rm -rf ~/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/

# Clean and rebuild your project
mvn clean compile

# Or if you want to be thorough, clear entire local repo
# rm -rf ~/.m2/repository/

3. Add dependency management (if needed)

If the problem persists, add this to your pom.xml to force version resolution:

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>jakarta.servlet.jsp.jstl</artifactId>
            <version>3.0.1</version>
        </dependency>
    </dependencies>
</dependencyManagement>

4. Verify the fix

After making these changes, run:

mvn clean compile
mvn jetty:run

You should no longer see the "scanned from multiple locations" warnings.

Why your original exclusion didn't work

Your exclusion was:

<exclusions>
    <exclusion>
        <groupId>org.glassfish.web</groupId>
        <artifactId>jakarta.servlet.jsp.jstl</artifactId>
    </exclusion>
</exclusions>

This is trying to exclude jakarta.servlet.jsp.jstl from the jakarta.servlet.jsp.jstl dependency itself, which is circular and meaningless. Exclusions are meant to exclude transitive dependencies that come from other dependencies.

The cached version 2.0.0 in your local repository from previous builds was causing the conflict, not an actual dependency issue in your current pom.xml.

Try these steps and let me know if you still see the warnings!


🧠 Learnings used
Learnt from: jo-elimu
PR: elimu-ai/webapp#0
File: :0-0
Timestamp: 2025-05-03T08:01:30.217Z
Learning: The elimu-ai/webapp repository has a dependency on ai.elimu:model (version 2.0.97) that provides shared model classes and enums. The Language enum should be imported from ai.elimu.model.v2.enums.Language instead of creating local duplicates.

@jo-elimu
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@coderabbitai I'm still getting the error:

[WARNING] org.apache.taglibs.standard.extra.spath.ASCII_CharStream scanned from multiple locations: jar:file:///~/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/3.0.1/jakarta.servlet.jsp.jstl-3.0.1.jar!/org/apache/taglibs/standard/extra/spath/ASCII_CharStream.class, jar:file:///~/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/2.0.0/jakarta.servlet.jsp.jstl-2.0.0.jar!/org/apache/taglibs/standard/extra/spath/ASCII_CharStream.class

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coderabbitai bot commented Jul 29, 2025

Tip

For best results, initiate chat on the files or code changes.

🧩 Analysis chain

@jo-elimu I see the issue is persisting. The fact that both versions are still in your local Maven repository indicates the cache clearing didn't work as expected or there's another dependency pulling in version 2.0.0. Let me analyze this more thoroughly.


🏁 Script executed:

#!/bin/bash
echo "=== Checking if both JSTL versions are still in local repository ==="
ls -la ~/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/ 2>/dev/null || echo "Directory not found"

echo -e "\n=== Full dependency tree analysis to find source of 2.0.0 ==="
mvn dependency:tree -Dverbose=true | grep -i jstl -A 5 -B 5

echo -e "\n=== Searching for any dependency that might transitively include JSTL 2.0.0 ==="
mvn dependency:tree -Dverbose=true | grep "2\.0\.0" | grep -i jakarta

echo -e "\n=== Check effective POM for any dependency management ==="
mvn help:effective-pom | grep -A 10 -B 10 "jakarta.servlet.jsp.jstl"

echo -e "\n=== Current pom.xml JSTL dependency ==="
grep -A 10 -B 2 "jakarta.servlet.jsp.jstl" pom.xml

Length of output: 1396


@jo-elimu The sandbox environment doesn't have Maven available, but I can provide you with comprehensive steps to resolve this persistent JSTL conflict. Since the dependency tree from earlier showed only version 3.0.1, but you're still seeing 2.0.0 at runtime, this suggests a more complex caching or IDE issue.

Comprehensive Resolution Steps

Step 1: Complete Maven Cache Clearing

Execute these commands in your project directory:

# Stop any running Maven/Jetty processes first
# Then clear JSTL-specific cache
rm -rf ~/.m2/repository/org/glassfish/web/jakarta.servlet.jsp.jstl/

# Also clear any related Jakarta servlet JSP dependencies
rm -rf ~/.m2/repository/jakarta/servlet/

# For a nuclear option, clear entire local repository (will re-download everything)
rm -rf ~/.m2/repository/

Step 2: Check for Hidden Dependency Sources

Run these commands to identify where version 2.0.0 might be coming from:

# Check for any parent POM dependencies
mvn help:effective-pom | grep -A 10 -B 10 "jakarta.servlet.jsp.jstl"

# Get verbose dependency tree to see all conflict resolutions
mvn dependency:tree -Dverbose=true > full-dependency-tree.txt

# Search for all JSTL-related dependencies
grep -i "jstl\|jsp" full-dependency-tree.txt

# Look specifically for version conflicts and omissions
grep -E "(omitted|conflict|2\.0\.0)" full-dependency-tree.txt

Step 3: Add Explicit Dependency Management

Add this to your pom.xml before your <dependencies> section:

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>jakarta.servlet.jsp.jstl</artifactId>
            <version>3.0.1</version>
        </dependency>
    </dependencies>
</dependencyManagement>

Step 4: Check Jetty Plugin Configuration

The Jetty plugin might have its own dependencies. Add this configuration to force it to use your version:

<plugin>
    <groupId>org.eclipse.jetty</groupId>
    <artifactId>jetty-maven-plugin</artifactId>
    <version>YOUR_JETTY_VERSION</version>
    <configuration>
        <!-- your existing config -->
    </configuration>
    <dependencies>
        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>jakarta.servlet.jsp.jstl</artifactId>
            <version>3.0.1</version>
        </dependency>
    </dependencies>
</plugin>

Step 5: IDE Cache Clearing

If you're using an IDE:

IntelliJ IDEA:

# Close IDE, then delete these directories
rm -rf .idea/libraries/
rm -rf .idea/modules/
# Restart IDE and reimport project

Eclipse:

  • Project → Clean → Clean all projects
  • Refresh project (F5)

Step 6: Verification Process

After making these changes:

# Clean everything
mvn clean

# Rebuild without running
mvn compile

# Check final dependency tree
mvn dependency:tree | grep -i jstl

# Run with verbose logging to see what's being loaded
mvn jetty:run -X 2>&1 | grep -i jstl

Step 7: Nuclear Option - Dependency Resolution Force

If the issue still persists, add this to your main dependency:

<dependency>
    <groupId>org.glassfish.web</groupId>
    <artifactId>jakarta.servlet.jsp.jstl</artifactId>
    <version>3.0.1</version>
    <exclusions>
        <!-- Exclude any transitive dependencies that might bring older versions -->
        <exclusion>
            <groupId>*</groupId>
            <artifactId>*</artifactId>
        </exclusion>
    </exclusions>
</dependency>

Then manually add back only the dependencies you actually need.

Questions to Help Debug:

  1. Are you using any IDE that might be caching dependencies?
  2. Do you have a parent POM that might be managing JSTL versions?
  3. What version of the Jetty Maven plugin are you using?
  4. Have you tried completely deleting and reimporting your project?

Try these steps in order and let me know at which step the issue gets resolved, or if you encounter any errors along the way.


🧠 Learnings used
Learnt from: jo-elimu
PR: elimu-ai/webapp#0
File: :0-0
Timestamp: 2025-05-03T08:01:30.217Z
Learning: The elimu-ai/webapp repository has a dependency on ai.elimu:model (version 2.0.97) that provides shared model classes and enums. The Language enum should be imported from ai.elimu.model.v2.enums.Language instead of creating local duplicates.

@jo-elimu jo-elimu closed this Jul 29, 2025
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Remove Jakarta JSTL warning messages during application launch

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