ai.djl.repository.zoo.ModelNotFoundException: No matching model with specified Input/Output type found in .jar

[kang120]

I have used the example code to run Object Detection.
Everything is fine when I compile and run with Eclipse.
However, when I export project to .jar file. When I execute .jar file, ModelNotFoundException is thrown.
I have added plugin to export maven project.

This is my ModelZoo definition

String backbone;
if ("TensorFlow".equals(Engine.getInstance().getEngineName())) {
          backbone = "mobilenet_v2";
}else{
          backbone = "resnet50";
}

Criteria<Image, DetectedObjects> criteria = Criteria.builder().optApplication(Application.CV.OBJECT_DETECTION)
									.setTypes(Image.class, DetectedObjects.class)
									.optFilter("backbone", backbone)
									.build();

try(ZooModel<Image, DetectedObjects> model = criteria.loadModel()){
	try(Predictor<Image, DetectedObjects> preditor = model.newPredictor()){
		DetectedObjects detection = preditor.predict(image);
		drawBoundingBox(detection);
		saveFile();
	}
}

This is my 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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>ai.djl</groupId>
    <artifactId>examples</artifactId>
    <version>0.13.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <djl.version>0.13.0-SNAPSHOT</djl.version>
        <exec.mainClass>ai.djl.examples.inference.ObjectDetection</exec.mainClass>
    </properties>

    <repositories>
        <repository>
            <id>djl.ai</id>
            <url>https://oss.sonatype.org/content/repositories/snapshots/</url>
        </repository>
    </repositories>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>ai.djl</groupId>
                <artifactId>bom</artifactId>
                <version>${djl.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>commons-cli</groupId>
            <artifactId>commons-cli</artifactId>
            <version>1.4</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.8.5</version>
        </dependency>
        <dependency>
            <groupId>ai.djl</groupId>
            <artifactId>api</artifactId>
        </dependency>
        <dependency>
            <groupId>ai.djl</groupId>
            <artifactId>basicdataset</artifactId>
        </dependency>
        <dependency>
            <groupId>ai.djl</groupId>
            <artifactId>model-zoo</artifactId>
        </dependency>
        <!-- MXNet -->
        <dependency>
            <groupId>ai.djl.mxnet</groupId>
            <artifactId>mxnet-model-zoo</artifactId>
        </dependency>
        <dependency>
            <groupId>ai.djl.mxnet</groupId>
            <artifactId>mxnet-engine</artifactId>
        </dependency>
        <dependency>
            <!--
                See https://github.com/deepjavalibrary/djl/blob/master/mxnet/mxnet-engine/README.md for more MXNet library selection options
            -->
            <groupId>ai.djl.mxnet</groupId>
            <artifactId>mxnet-native-auto</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
		    <groupId>org.slf4j</groupId>
		    <artifactId>slf4j-jcl</artifactId>
		    <version>1.7.5</version>
		</dependency>     
		<dependency>
		    <groupId>org.slf4j</groupId>
		    <artifactId>slf4j-api</artifactId>
		    <version>1.7.5</version>
		</dependency>
    </dependencies>
    
    <build>
		<plugins>
			<plugin>
			    <artifactId>maven-assembly-plugin</artifactId>
			    <configuration>
			        <archive>
			            <manifest>                 
			                <mainClass>Main</mainClass>
			            </manifest>
			        </archive>
			        <descriptorRefs>
			            <descriptorRef>jar-with-dependencies</descriptorRef>
			        </descriptorRefs>
			    </configuration>
		   </plugin>
		   <plugin>
		        <artifactId>maven-compiler-plugin</artifactId>
		        <version>3.7.0</version>
		        <configuration>
		          <source>1.8</source>
		          <target>1.8</target>
		        </configuration>
	      </plugin>
		</plugins>
	</build>
</project>

Why this would happen?

[frankfliu]

This most likely is related to maven-assembly-plugin, can you try to remove model-zoo dependency from your pom.xml?

        <dependency>
            <groupId>ai.djl</groupId>
            <artifactId>model-zoo</artifactId>
        </dependency>

You might run into maven jar merge issue, see: #940

[kang120]

#940 have solved my problem. Thanks for help!

[devwangrui]

大佬 我今天也遇到这个问题了 代码在idea上正常的 能识别 但是我打包成jar包之后再运行 检测就报错：No matching model with specified Input/Output type found。 您是怎么解决的

[frankfliu]

How you package your jar, please take a look our package example: https://github.com/deepjavalibrary/djl-demo/tree/master/development/fatjar