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Getting SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder" for rabbitmq

I am trying to learn rabbitmq with it's JAVA APIs.
Producer
package org.rabbitmq.org.rabbitmq.helloworld;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.Channel;
public class Producer {
private static final String QUEUE_NAME="hello";
public static void main(String[] args) throws Exception{
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("http://localhost:15672");
try(Connection conn = factory.newConnection(); Channel channel = conn.createChannel()){
channel.queueDeclare(QUEUE_NAME,false,false,false,null);
String msg = "Hi, i am Rahul";
System.out.println("Pushed message -> "+msg);
}
}
}
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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>org.example</groupId>
<artifactId>Java</artifactId>
<version>1.0-SNAPSHOT</version>
<name>Java</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/com.rabbitmq/amqp-client -->
<dependency>
<groupId>com.rabbitmq</groupId>
<artifactId>amqp-client</artifactId>
<version>5.15.0</version>
</dependency>
</dependencies>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
<!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.7.1</version>
</plugin>
<plugin>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>3.0.0</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
Upon running the Producer.java i am getting the following error.
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Exception in thread "main" java.net.UnknownHostException: http://localhost:15672: nodename nor servname provided, or not known
at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:52)
at java.base/java.net.InetAddress$PlatformResolver.lookupByName(InetAddress.java:1048)
at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1638)
at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:997)
at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1628)
at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1494)
at com.rabbitmq.client.DnsRecordIpAddressResolver.resolveIpAddresses(DnsRecordIpAddressResolver.java:83)
at com.rabbitmq.client.DnsRecordIpAddressResolver.getAddresses(DnsRecordIpAddressResolver.java:73)
at com.rabbitmq.client.impl.recovery.RecoveryAwareAMQConnectionFactory.newConnection(RecoveryAwareAMQConnectionFactory.java:58)
at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.init(AutorecoveringConnection.java:160)
at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1216)
at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1173)
at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1131)
at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1294)
at org.rabbitmq.org.rabbitmq.helloworld.Producer.main(Producer.java:13)
Note : My rabbitmq server is running on port 15672.

Firstly, it's worth pointing out that the message from SLF4J isn't the real problem here. That's just a warning saying that SLF4J couldn't find a suitable logging library to use to write logs.
The real problem here is the UnknownHostException. I believe the problem is caused by this line:
factory.setHost("http://localhost:15672");
You need to pass the host name to factory.setHost, but you are passing a URL instead, and this URL contains a protocol (http) and a port number (15672) as well as the host name (localhost).
Connections to RabbitMQ appear not to use the HTTP protocol, so the http:// part is incorrect. Also, it seems the port number is passed using a separate method call rather than as part of the hostname.
Try the following instead:
factory.setHost("localhost");
factory.setPort(15672);
I have to admit that I've never used RabbitMQ before, so I can't guarantee that the code above works. I've based my answer on the 'Connecting to RabbitMQ' section of the RabbitMQ API guide.

How do I update an App Engine project to Java 11 without web.xml?

I have an App Engine project. Here is a sample repo, but it only contains a few files:
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>io.happycoding</groupId>
<artifactId>google-cloud-hello-world</artifactId>
<version>1</version>
<packaging>war</packaging>
<properties>
<!-- App Engine currently supports Java 8 -->
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<failOnMissingWebXml>false</failOnMissingWebXml>
</properties>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>1.9.71</version>
</plugin>
</plugins>
</build>
</project>
appengine-web.xml
<?xml version="1.0" encoding="utf-8"?>
<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
<application>MY_PROJECT_ID_HERE</application>
<version>1</version>
<threadsafe>false</threadsafe>
<sessions-enabled>true</sessions-enabled>
<runtime>java8</runtime>
</appengine-web-app>
HelloWorldServlet.java
package io.happycoding.servlets;
import java.io.IOException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
#WebServlet("/hello")
public class HelloWorldServlet extends HttpServlet {
#Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
response.setContentType("text/html;");
response.getOutputStream().println("<h1>Hello world!</h1>");
}
}
I do not have a web.xml file because I'm using the #WebServlet annotation instead. This has worked perfectly for years.
The only problem was that I was restricted to using Java 8, so I was happy to see App Engine announce support for Java 11. I am now trying to upgrade my App Engine project to Java 11.
I started by changing the appengine-web.xml file to contain this line:
<runtime>java11</runtime>
I also changed the pom.xml file:
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
I run mvn appengine:devserver (which works fine before this change), and I get this error:
ClassLoader is jdk.internal.loader.ClassLoaders$AppClassLoader#78308db1, not a URLClassLoader.
I gather that this is because the App Engine Maven plugin itself requires Java 8. I also learn that the App Engine Maven plugin is deprecated, and that I should upgrade to the Cloud SDK Maven plugin. Okay fine.
I follow this guide and I change the plugin in my pom.xml file to this:
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>2.2.0</version>
</plugin>
I then run mvn package appengine:run (because of course the command to run a devserver changed too), but now I get this error:
java.io.FileNotFoundException: /home/kevin/gcloud-tutorials/hello-world/target/hello-world-1/WEB-INF/web.xml (No such file or directory)
The error says it can't find a web.xml file, but I shouldn't need one because I'm using the #WebServlet annotation! My pom.xml file also contains a <failOnMissingWebXml>false</failOnMissingWebXml> property, but I don't know whether that does anything with the new plugin.
Am I missing a step or property? How do I upgrade my App Engine project to use Java 11, without also requiring a web.xml file?

There are some pretty huge differences between App Engine's Java 8 runtime and its Java 11 runtime.
Specifically, the Java 8 runtime included a Jetty web server that automatically ran your code, but the Java 11 runtime no longer includes this, so you have to include it yourself.
There is a migration guide here but I found that very confusing to follow, so I'll try to outline the steps here:
Step 1: Migrate from appengine-web.xml to app.yaml.
Delete your appengine-web.xml file, and create a new app.yaml file. My app.yaml file only contained a single line:
runtime: java11
Step 2: Add a main entry point class that runs a web server.
There are many ways to do this, but there's what I did:
package io.happycoding;
import java.net.URL;
import org.eclipse.jetty.annotations.AnnotationConfiguration;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.handler.DefaultHandler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.DefaultServlet;
import org.eclipse.jetty.webapp.Configuration;
import org.eclipse.jetty.webapp.WebAppContext;
import org.eclipse.jetty.webapp.WebInfConfiguration;
/**
* Starts up the server, including a DefaultServlet that handles static files,
* and any servlet classes annotated with the #WebServlet annotation.
*/
public class ServerMain {
public static void main(String[] args) throws Exception {
// Create a server that listens on port 8080.
Server server = new Server(8080);
WebAppContext webAppContext = new WebAppContext();
server.setHandler(webAppContext);
// Load static content from inside the jar file.
URL webAppDir =
ServerMain.class.getClassLoader().getResource("META-INF/resources");
webAppContext.setResourceBase(webAppDir.toURI().toString());
// Enable annotations so the server sees classes annotated with #WebServlet.
webAppContext.setConfigurations(new Configuration[]{
new AnnotationConfiguration(),
new WebInfConfiguration(),
});
// Look for annotations in the classes directory (dev server) and in the
// jar file (live server)
webAppContext.setAttribute(
"org.eclipse.jetty.server.webapp.ContainerIncludeJarPattern",
".*/target/classes/|.*\\.jar");
// Handle static resources, e.g. html files.
webAppContext.addServlet(DefaultServlet.class, "/");
// Start the server! 🚀
server.start();
System.out.println("Server started!");
// Keep the main thread alive while the server is running.
server.join();
}
}
This class uses Jetty to run a web server, and then adds the rest of your code to that web server. This code assumes that everything will be packaged in the same .jar file.
Step 3: Modify pom.xml
Your pom.xml needs a few things:
Dependencies for the web server you're running. I used Jetty.
Plugins for packaging your code. I chose to package mine as a single uber jar, so I used maven-resources-plugin and maven-shade-plugin.
Plugins for running your code locally. The old appengine-maven-plugin does not work for deploying locally, because it still requires appengine-web.xml for some reason. Because I chose the uber jar approach, I used exec-maven-plugin.
The appengine-maven-plugin does still work for deploying to the live server, so you still need it for that.
If that sounds confusing, you're right. But putting it all together, here's what I came up with:
<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>io.happycoding</groupId>
<artifactId>app-engine-hello-world</artifactId>
<version>1</version>
<properties>
<!-- App Engine currently supports Java 11 -->
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<jetty.version>9.4.31.v20200723</jetty.version>
<!-- Project-specific properties -->
<mainClass>io.happycoding.ServerMain</mainClass>
<googleCloudProjectId>YOUR_PROJECT_ID_HERE</googleCloudProjectId>
</properties>
<dependencies>
<!-- Java Servlets API -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
</dependency>
<!-- Jetty -->
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-server</artifactId>
<version>${jetty.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-annotations</artifactId>
<version>${jetty.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<!-- Copy static resources like html files into the output jar file. -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<executions>
<execution>
<id>copy-web-resources</id>
<phase>compile</phase>
<goals><goal>copy-resources</goal></goals>
<configuration>
<outputDirectory>
${project.build.directory}/classes/META-INF/resources
</outputDirectory>
<resources>
<resource><directory>./src/main/webapp</directory></resource>
</resources>
</configuration>
</execution>
</executions>
</plugin>
<!-- Package everything into a single executable jar file. -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.4</version>
<executions>
<execution>
<phase>package</phase>
<goals><goal>shade</goal></goals>
<configuration>
<createDependencyReducedPom>false</createDependencyReducedPom>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>${mainClass}</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
<!-- Exec plugin for deploying the local server. -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>3.0.0</version>
<executions>
<execution>
<goals>
<goal>java</goal>
</goals>
</execution>
</executions>
<configuration>
<mainClass>${mainClass}</mainClass>
</configuration>
</plugin>
<!-- App Engine plugin for deploying to the live site. -->
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>2.2.0</version>
<configuration>
<projectId>${googleCloudProjectId}</projectId>
<version>1</version>
</configuration>
</plugin>
</plugins>
</build>
</project>
I put all of this into an example project available here.

ClassNotFoundException: Failed to find data source: bigquery

I'm trying to load data from Google BigQuery into Spark running on Google Dataproc (I'm using Java). I tried to follow instructions on here: https://cloud.google.com/dataproc/docs/tutorials/bigquery-connector-spark-example
I get the error: "ClassNotFoundException: Failed to find data source: bigquery."
My pom.xml looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<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>com.virtualpairprogrammers</groupId>
<artifactId>learningSpark</artifactId>
<version>0.0.3-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-core_2.11</artifactId>
<version>2.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-sql_2.11</artifactId>
<version>2.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-hdfs</artifactId>
<version>2.2.0</version>
</dependency>
<dependency>
<groupId>com.google.cloud.spark</groupId>
<artifactId>spark-bigquery_2.11</artifactId>
<version>0.9.1-beta</version>
<classifier>shaded</classifier>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<archive>
<manifest>
<mainClass>com.virtualpairprogrammers.Main</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
</project>
After adding the dependency to my pom.xml it was downloading a lot to build the .jar, so I think I should have the correct dependency? However, Eclipse is also warning me that "The import com.google.cloud.spark.bigquery is never used".
This is the part of my code where I get the error:
import org.apache.spark.sql.Dataset;
import org.apache.spark.sql.Row;
import org.apache.spark.sql.SparkSession;
import com.google.cloud.spark.bigquery.*;
public class Main {
public static void main(String[] args) {
SparkSession spark = SparkSession.builder()
.appName("testingSql")
.getOrCreate();
Dataset<Row> data = spark.read().format("bigquery")
.option("table","project.dataset.tablename")
.load()
.cache();

I think you only added BQ connector as compile time dependency, but it is missing at runtime. You need to either make a uber jar which includes the connector in your job jar (the doc needs to be updated), or include it when you submit the job gcloud dataproc jobs submit spark --properties spark.jars.packages=com.google.cloud.spark:spark-bigquery_2.11:0.9.1-beta.

I faced the same issue and updated the format from "bigquery" to "com.google.cloud.spark.bigquery" and that worked for me.

Specifying the dependency in the build.sbt and using "com.google.cloud.spark.bigquery" in format as suggested by Peter resolved the issue for me.

com.google.common.base.Preconditions.checkArgument(ZLjava/lang/String;CLjava/lang/Object;)V

I am using the google BETA API: AutoML Natural Language, after training the API, I did tests in a Java SE project obtaining a satisfactory result, however, when I migrated it to a Java EE project I got different problems. About:
-Java -version: 1.8.0_201
-Payara Version: 5.191
-google-cloud-automl dependecy: 0.97.0-beta
When I try to run the entity extraction service (PredictionServiceClient class) it returns the error java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkArgument (ZLjava / lang / String; CLjava / lang / Object;) V, according to different sources this error is caused by conflicts between different versions of the guava library. I think my particular error is caused because guava's version is 19.0.0 in payara and google-cloud-automl requires a version > 20.
To solve this error payara suggests here modifying the file glassfish-application.xml, "With this, the libraries included in the EAR's lib / directory will take precedence", however this did not work for me.
The code was written with the help of this documentation
glassfish-application.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glassfish-application PUBLIC "-//GlassFish.org//DTD GlassFish Application Server 3.1 Java EE Application 6.0//EN" "http://glassfish.org/dtds/glassfish-application_6_0-1.dtd">
<glassfish-application>
<classloading-delegate>false</classloading-delegate>
</glassfish-application>
pom[EJB].xml
<?xml version="1.0" encoding="UTF-8"?>
<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>
<parent>
<artifactId>AutoMLTest</artifactId>
<groupId>co.com.group.automl</groupId>
<version>1.0</version>
</parent>
<groupId>co.com.group.automl</groupId>
<artifactId>AutoMLTest-ejb</artifactId>
<version>1.0</version>
<packaging>ejb</packaging>
<name>AutoMLTest-ejb</name>
<properties>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>google-cloud-automl</artifactId>
<version>0.97.0-beta</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<targetPath>META-INF</targetPath>
<directory>src</directory>
<includes>
<include>jax-ws-catalog.xml</include>
<include>wsdl/**</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<compilerArguments>
<endorseddirs>${endorsed.dir}</endorseddirs>
</compilerArguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-ejb-plugin</artifactId>
<version>2.3</version>
<configuration>
<ejbVersion>3.1</ejbVersion>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.6</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<outputDirectory>${endorsed.dir}</outputDirectory>
<silent>true</silent>
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>7.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
Method AutoML Extraction.xml
public void extracNL(String content) throws Exception {
String googleCredentials = "/path/credentials.json"
GoogleCredentials credentials = GoogleCredentials.fromStream(new FileInputStream(googleCredentials)).createScoped(Lists.newArrayList("https://www.googleapis.com/auth/cloud-platform"));
PredictionServiceSettings settings =
PredictionServiceSettings.newBuilder().setCredentialsProvider(FixedCredentialsProvider.create(credentials)).build();
//The problem is presented in this line of code
PredictionServiceClient serviceClient =
PredictionServiceClient.create(settings);
ModelName modelName = ModelName.of("projectId", "computeRegion", "modelId");
TextSnippet snippet = TextSnippet.newBuilder().setContent(content).setMimeType("text/plain").build();
ExamplePayload payload = ExamplePayload.newBuilder().setTextSnippet(snippet).build();
Map<String, String> params = new HashMap<>();
PredictResponse response = serviceClient.predict(modelName, payload, params);
List<PredictGoogleDTO> predictionsTmp = new ArrayList<>();
for (AnnotationPayload annotationPayload : response.getPayloadList()) {
if (annotationPayload.getDisplayName().equals("Person")) {
System.out.println("DisplayName="+annotationPayload.getDisplayName());
System.out.println("Content="+annotationPayload.getTextExtraction().getTextSegment().getContent());
}
}
}
Is there another way to do this? is it really impossible for my application to use the guava version in the pom and not the payara server? after testing the command line in maven mvn dependecy; tree -Dverbose in the path of my project I do not get any dependencies error. can then guava be the cause of this error really? I feel that I have tried everything and I can not find a possible solution to my problem, in advance thank you.

probably many of them will be presented with this and other errors when using the AutoML Natural Language API in their BETA version, this is normal and we must assume that as a BETA version this type of problem will be present. My solution was to isolate the consumption of the API from my JAVA EE application, implementing for the first time a lambda function in AWS (Amazon Web Service) and consuming the service through a REST call to this function. This worked perfect for me, and it is a clean solution (from my perspective). Regards.

Why am I getting a BundleException when starting my minimal example bundle with Apache Felix Gogo?

I am trying to learn OSGI from the bottom up. Starting with making and running a minimal example bundle.
I have set up a simple project using maven and the previously linked example from the apache felix website. This minimal project seems to compile nicely and I can see no problem when inspecting the contents of the resulting .jar file.
I then install the resulting bundled .jar file in apache felix's gogo osgi-terminal tool using felix:install <mybundle.jar>. After that I try starting it using felix:start <mybundle.jar>.
This is when my problem occurs. I get a stacktrace of a org.osgi.framework.BundleException.
So this is the problem I'm trying to fix. I see no apparent problem nor solution that might help or explain why I'm geting this problem.
I'm also using the apache felix framework version 6.0.3 to run my bundle.
So, my question is: Why am I getting these problems, and what can I do to resolve them so that I can get back on track learning OSGI?
I have been searching the great internet for its infinite wisdom considering all things technical, but cannot find anyone having hade the same problem under these same circumstances.
For further information, I'm using Java 12 and the Maven that's built in to IntelliJ Idea Community Edition. I had the same problem using Java 8 with this same setup and have upgraded to 12 just because it felt smart to do so sooner than later.
The OSGI-Activator class, which is the only code in this project so far is as shows below:
package com.github.hannesknutsson.privatepkg;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceEvent;
import org.osgi.framework.ServiceListener;
public class Activator implements BundleActivator, ServiceListener {
private BundleContext context;
public void start(BundleContext bundleContext) throws Exception {
context = bundleContext;
System.out.println("Starting to listen for service events.");
context.addServiceListener(this);
}
public void stop(BundleContext bundleContext) throws Exception {
System.out.println("Stopped listening for service events.");
}
public void serviceChanged(ServiceEvent serviceEvent) {
String[] objectClass = (String[])
serviceEvent.getServiceReference().getProperty("objectClass");
if (serviceEvent.getType() == ServiceEvent.REGISTERED)
{
System.out.println(
"Ex1: Service of type " + objectClass[0] + " registered.");
}
else if (serviceEvent.getType() == ServiceEvent.UNREGISTERING)
{
System.out.println(
"Ex1: Service of type " + objectClass[0] + " unregistered.");
}
else if (serviceEvent.getType() == ServiceEvent.MODIFIED)
{
System.out.println(
"Ex1: Service of type " + objectClass[0] + " modified.");
}
}
}
The Maven pom.xml used to compile and package the results into a bundled .jar file is as follows:
<?xml version="1.0" encoding="UTF-8"?>
<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">
<parent>
<artifactId>testproject</artifactId>
<groupId>com.github.hannesknutsson</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<packaging>bundle</packaging>
<artifactId>TestBundle</artifactId>
<dependencies>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>4.2.0</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
</archive>
</configuration>
<version>3.1.1</version>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<extensions>true</extensions>
<configuration>
<instructions>
<Export-Package>${project.groupId}.services</Export-Package>
<Private-Package>${project.groupId}.privatepkg</Private-Package>
<Bundle-Activator>${project.groupId}.privatepkg.Activator</Bundle-Activator>
</instructions>
</configuration>
<version>4.2.0</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>12</source>
<target>12</target>
</configuration>
<version>3.8.1</version>
</plugin>
</plugins>
</build>
</project>
The resulting stacktrace of this is as follows:
org.osgi.framework.BundleException: Unable to cache bundle: TestBundle-1.0-SNAPSHOT.jar
at org.apache.felix.framework.Felix.installBundle(Felix.java:3231)
at org.apache.felix.framework.BundleContextImpl.installBundle(BundleContextImpl.java:147)
at org.apache.felix.framework.BundleContextImpl.installBundle(BundleContextImpl.java:120)
at org.apache.felix.gogo.command.Basic.start(Basic.java:734)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.apache.felix.gogo.runtime.Reflective.invoke(Reflective.java:139)
at org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:91)
at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:599)
at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:526)
at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:415)
at org.apache.felix.gogo.runtime.Pipe.doCall(Pipe.java:416)
at org.apache.felix.gogo.runtime.Pipe.call(Pipe.java:229)
at org.apache.felix.gogo.runtime.Pipe.call(Pipe.java:59)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:835)
Caused by: java.net.MalformedURLException: no protocol: TestBundle-1.0-SNAPSHOT.jar
at java.base/java.net.URL.<init>(URL.java:650)
at org.apache.felix.framework.util.SecureAction.createURL(SecureAction.java:256)
at org.apache.felix.framework.cache.JarRevision.initialize(JarRevision.java:148)
at org.apache.felix.framework.cache.JarRevision.<init>(JarRevision.java:76)
at org.apache.felix.framework.cache.BundleArchive.createRevisionFromLocation(BundleArchive.java:799)
at org.apache.felix.framework.cache.BundleArchive.reviseInternal(BundleArchive.java:480)
at org.apache.felix.framework.cache.BundleArchive.<init>(BundleArchive.java:148)
at org.apache.felix.framework.cache.BundleCache.create(BundleCache.java:462)
at org.apache.felix.framework.Felix.installBundle(Felix.java:3227)
... 19 more
java.net.MalformedURLException: no protocol: TestBundle-1.0-SNAPSHOT.jar

Felix expects a URI when you install the bundle. Try to either use a full file: url.
Alternatively you can download the felix distribution and put your bundle into the bundle dir.
In general be aware that the felix tutorial is a bit outdated and uses some very low level approaches that you would never use in production.
See the answer to this question: Where to find and install org.osgi.framework package?