I follow the instructions in https://spring.io/guides/gs/spring-boot/#scratch, but when it says to run:
./gradlew build && java -jar build/libs/gs-spring-boot-0.1.0.jar
the build fails with the above error.
There is message before the failure that says:
Deprecated Gradle features were used in this build, making it incompatible with Gradle 5.0.
See https://docs.gradle.org/4.8.1/userguide/command_line_interface.html#sec:command_line_warnings
but everyone online says that's just a warning.
The build doesn't appear to create or download build/libs/gs-spring-boot-0.1.0.jar.
Currently completely blocked on first attempt to use Gradle.
I just had this problem.
The tutorial is in error in what you need to run. It should be
$ gradlew build && java -jar build/libs/gs-rest-service-0.1.0.jar
I think that they updated the code, but forgot to update the tutorial.
I had the same issue when build a simple project with Maven on Intellij IDEA. (Ubuntu 18.04.2).
Just typed terminal (in project directory):
$ sudo mvn package
$ java -jar ./target/(your-project-name)-(<version> at pom.xml).jar
For example my project name is hello-world-spring and version name in pom.xml is <version>0.0.1-SNAPSHOT</version>, I have to type:
$ sudo mvn package
$ java -jar ./target/hello-world-spring-0.0.1-SNAPSHOT.jar
Maybe this method can work for gradle as well.
Please check the path of the jar file build/libs/gs-spring-boot-0.1.0.jar. For your case, the jar might be in a different folder. If your code is in a module in the main project, then the jar will be in the build folder of the module.
If you git clone the repo, then the tutorial works. If you "To start from scratch, move on to Build with Gradle.", then the tutorial doesn't work. There are missing setup steps.
I got the same issue and I changed the command to java -jar target/rest-service-0.0.1-SNAPSHOT.jar (I checked the .jar file in target folder and found that the file name was incorrect).
Parent folder of my project was having spaces in it's name, i changed it to the underscore and it worked.
Looked at the command line as it was in the official guide:
./gradlew clean build && java -jar build/libs/gs-actuator-service-0.1.0.jar
First, the above command line has two parts:
(1) ./gradlew clean build //Use gradle wrapper to build
(2) java -jar build/libs/gs-actuator-service-0.1.0.jar //To run an application packaged as a JAR file
Now, one might run into issues with one part or both parts. Separating them and running just on thing at a time helped troubleshoot.
(1) didn't work for my Windows, I did the following instead and that built the application successfully.
.\gradlew.bat clean build
Now moving to (2) java -jar build/libs/gs-actuator-service-0.1.0.jar
It literally means that "Run a jar file that is called gs-actuator-service-0.1.0.jar under this directory/path: build/libs/" Again, for Windows, this translates to build\libs\ , and there's one more thing that may catch you: The jar file name can be slightly different depending on how it was actually named by the configuration in initial/setting.gradle:
rootProject.name = 'actuator-service'
Note that the official guide changed it from 'gs-actuator-service' to 'actuator-service' in their sample code but hasn't updated the tutorial accordingly. But now you know where the jar file name comes from, that doesn't matter anymore, and you have the choice to rename it however you want.
Having all the factors adjusted, below is what eventually worked in my case:
java -jar build\libs\actuator-service-0.0.1-SNAPSHOT.jar
or
java -jar C:\MyWorkspace\Spring\gs-actuator-service\initial\build\libs\actuator-service-0.0.1-SNAPSHOT.jar //with fully qualified path
If you are curious where does "-0.0.1-SNAPSHOT" come from, here it is:
in build.gradle
version = '0.0.1-SNAPSHOT'
Again, you have the choice to modify it however you want. For example, if I changed it to 0.0.2-SNAPSHOT, the command line should be adjusted accordingly
java -jar build\libs\actuator-service-0.0.2-SNAPSHOT.jar
Reference: https://docs.oracle.com/javase/tutorial/deployment/jar/basicsindex.html
Because you are trying to execute .jar file that doesn't exist. After building the project go to ./build/libs and check the name of freshly built .jar file and then in your project directory run:
./gradlew build && java -jar build/libs/name-of-your-jar-file.jar
or you can set version property to empty string in your build.gradle file
version = ''
after that:
./gradlew build && java -jar build/libs/your-project-name.jar
For Windows, these commands solved the problem: "Error: Unable to access jarfile springboot.jar":
cd target
java -jar springboot-0.0.1-SNAPSHOT.jar
run ./mvnw package
Now a folder named target is created and you can see a jar file inside it.
then execute java -jar target/<jarfilename>
I have just installed Maven on Redhat, the apache-maven-3.3.9 is located in /root/, I ran the following command to set the path (JDK java home path already set and when I type $PATH the below path does show, along with when I type mvn --version):
export PATH=/root/apache-maven-3.3.9/bin:$PATH
The project I want to build with Maven is also in /root/ however, I cannot use the maven commands within the project or anywhere else except for /apache-maven-3.3.9/bin directory.
Any help would be much appreciated!
You need to add it to your ~/.profile file.
export PATH=$PATH:/root/apache-maven-3.3.9/bin
so that when you exit the terminal and start a new terminal instance path is not lost
I have created a program in Java, but it is not taking the inputs correctly in edit-plus(compiler) so now I want it to run in cmd. My JSK file is at : C:\Program Files\Java\jdk1.7.0_21\bin and my Java file is at: C:\TurboC4\TC\java new programs
Please tell me the steps to run it in cmd.
On the command line use:
java -jar path/to/your/jar_file.jar
if you do not have a jar file, than you have to compile first your Java classes:
javac -g Foo.java
if you have just a single file (containing a static void main()) than you can simply run it with:
java path/to/your/compiled_class_file [<command line args>, ...]
Note: Run the command above without .class extension. i.e.
java Foo
if you want to generate a jar file from your compiled .class files run:
jar cf jar-file input-file(s)
However, I would recommend you to use a IDE that compiles, packs and runs your code for you automatically with one click. i.e. IntelliJ or Eclipse
If your class is not into a package and is compiled as java.class in C:\TurboC4\TC\:
cd C:\TurboC4\TC\
C:\Program Files\Java\jdk1.7.0_21\bin java
If you just want to run your single java class as a command line program, then the answer is in This question.
Example:
java my.class.HelloWorld
If you have compiled an entire java project into a JAR file, check this Stackoverflow question for the answer.
Example:
java -cp c:\location_of_jar\myjar.jar com.mypackage.myClass
I am trying to compile WordCount.java file into jar inside of /Desktop/Hadoop/playground/src.
Here's the command I am using.
javac -classpath hadoop-1.2.1-core.jar -d playground/classes playground/src/WordCount.java
The compiler seem to be getting invoked, however I am getting tons of errors like this
error: package org.apache.hadoop.conf does not exist import org.apache.hadoop.conf.Configuration
How do I go about fixing this?
May be there is an answer to this issue already. However I could not fix it.
You need to set the paths of hadoop-1.2.1-core.jar and all the other dependent jars correctly --
Try this exactly while you are in the Desktop/hadoop directory (valid in your case only solely based upon the inputs you provided in the comments)
javac -classpath *:lib/* -d playground/classes playground/src/WordCount.java
I want run "ReutersToSparseVectors.java". I can compile and created JAR file without problem.
I compiled this file by below command:
javac -classpath hadoop-core-0.20.205.0.jar:lucene-core-3.6.0.jar:mahout-core-0.7.jar:mahout-math-0.7.jar ReutersToSparseVectors.java
created JAR file with below command:
jar cvf ReutersToSparseVectors.jar ReutersToSparseVectors.class
When I write java -jar ReutersToSparseVectors.jar to run, give me below error:
Failed to load Main-Class manifest attribute from
ReutersToSparseVectors.jar
Do you can help me to solve this problem?
IF this example can run with hadoop, please me that how i can run this with hadoop.
instead of using -jar option, then it's better to to run:
java -cp mahout-core.jar:... mia.clustering.ch09.ReutersToSparseVectors
or you can use mvn exec:java command, as described in README for examples...
mvn exec:java -Dexec.mainClass="mia.clustering.ch09.ReutersToSparseVectors"
Or you can run this file directly from your IDE (assuming, that you correctly imported Maven project).
P.S. your command isn't working, because to run with -jar switch, the .jar file should have special entry in manifest that describes that class should be started by default...
P.P.S. It's better to use book's examples with Mahout 0.7, as they were tested for it. You can use it with version 0.7 if you need, by then you need to take source code from mahout-0.7 branch of repository with examples (link is above)