java.lang.ClassNotFoundException: gg.jte.TemplateOutput exception received when rendering JTE template

[tharakadumidu]

Hi All,
I'm writing a maven plugin which is using JTE templates. Here is pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.abc</groupId>
  <artifactId>test</artifactId>
  <packaging>maven-plugin</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>unit-craft Maven Mojo</name>
  <url>http://maven.apache.org</url>

  <properties>
    <java.version>21</java.version>
    <maven.compiler.source>21</maven.compiler.source>
    <maven.compiler.target>21</maven.compiler.target>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-plugin-api</artifactId>
      <version>3.9.9</version>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.plugin-tools</groupId>
      <artifactId>maven-plugin-annotations</artifactId>
      <version>3.9.0</version>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-core</artifactId>
      <version>3.9.9</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.bcel</groupId>
      <artifactId>bcel</artifactId>
      <version>6.10.0</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>6.1.13</version>
    </dependency>
    <dependency>
      <groupId>gg.jte</groupId>
      <artifactId>jte</artifactId>
      <version>3.1.12</version>
    </dependency>
    <dependency>
      <groupId>gg.jte</groupId>
      <artifactId>jte-runtime</artifactId>
      <version>3.1.12</version>
    </dependency>
  </dependencies>
  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-plugin-plugin</artifactId>
          <version>3.15.0</version>
          <configuration>
            <goalPrefix>abc</goalPrefix>
          </configuration>
          <dependencies>
            <dependency>
              <groupId>gg.jte</groupId>
              <artifactId>jte</artifactId>
              <version>3.1.0</version>
            </dependency>
          </dependencies>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-site-plugin</artifactId>
          <version>3.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

Here is how I'm rendering the template

CodeResolver codeResolver = new DirectoryCodeResolver(Path.of("jte"));
  TemplateEngine engine = TemplateEngine.create(codeResolver, ContentType.Plain);
  TemplateOutput output = new StringOutput();
  engine.render("example.jte", javaClass, output);

I'm deploying maven plugin to local repo and then run the plugin. Getting the below error. All the other classes are loaded in the runtime environment , but it's complaining for gg.jte.TemplateOutput.

at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:169)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:298)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
    at java.lang.reflect.Method.invoke (Method.java:580)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: java.lang.NoClassDefFoundError: gg/jte/TemplateOutput
    at java.lang.Class.getDeclaredMethods0 (Native Method)
   
 at java.lang.Class.privateGetDeclaredMethods (Class.java:3578)
    at java.lang.Class.getDeclaredMethods (Class.java:2676)
    at gg.jte.runtime.Template.findRenderMethods (Template.java:69)
    at gg.jte.runtime.Template.<init> (Template.java:26)
    at gg.jte.runtime.TemplateLoader.load (TemplateLoader.java:26)
    at gg.jte.compiler.TemplateCompiler.load (TemplateCompiler.java:51)
    at gg.jte.TemplateEngine.lambda$resolveTemplateOnDemand$0 (TemplateEngine.java:354)
    at java.util.concurrent.ConcurrentHashMap.compute (ConcurrentHashMap.java:1916)
    at gg.jte.TemplateEngine.resolveTemplateOnDemand (TemplateEngine.java:347)
    at gg.jte.TemplateEngine.resolveTemplate (TemplateEngine.java:337)
    at gg.jte.TemplateEngine.render (TemplateEngine.java:210)
    at com.abc.UnitTestsGeneratorMojo.execute (UnitTestsGeneratorMojo.java:78)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:298)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
    at java.lang.reflect.Method.invoke (Method.java:580)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: java.lang.ClassNotFoundException: gg.jte.TemplateOutput
    at java.net.URLClassLoader.findClass (URLClassLoader.java:445)
    at java.lang.ClassLoader.loadClass (ClassLoader.java:593)
    at java.lang.ClassLoader.loadClass (ClassLoader.java:526)
    at java.lang.Class.getDeclaredMethods0 (Native Method)
    at java.lang.Class.privateGetDeclaredMethods (Class.java:3578)
    at java.lang.Class.getDeclaredMethods (Class.java:2676)
    at gg.jte.runtime.Template.findRenderMethods (Template.java:69)
    at gg.jte.runtime.Template.<init> (Template.java:26)
    at gg.jte.runtime.TemplateLoader.load (TemplateLoader.java:26)
    at gg.jte.compiler.TemplateCompiler.load (TemplateCompiler.java:51)
    at gg.jte.TemplateEngine.lambda$resolveTemplateOnDemand$0 (TemplateEngine.java:354)
    at java.util.concurrent.ConcurrentHashMap.compute (ConcurrentHashMap.java:1916)
    at gg.jte.TemplateEngine.resolveTemplateOnDemand (TemplateEngine.java:347)
    at gg.jte.TemplateEngine.resolveTemplate (TemplateEngine.java:337)
    at gg.jte.TemplateEngine.render (TemplateEngine.java:210)
    at com.abc.UnitTestsGeneratorMojo.execute (UnitTestsGeneratorMojo.java:78)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:298)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
    at java.lang.reflect.Method.invoke (Method.java:580)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)

Can you please help me to solve this issue ?

[sysmat]

have the same problem, and not found a solution, using jte in war is very strange, classes are there but jte can't find them