java-如何使用一些用户定义的参数部署位于远程计算机上的jar文件

Question

I am pretty new to maven/ant hence please excuse me if my question sounds silly to you...

In an application I am working on, I have to initialise a virtual machine (eg Amazon EC2 instance), then upload a JAR file to that machine and finally, run it-- each time I want to run it, the run-time arguments may be different.

What is the best way of doing this? What frameworks/libraries (like maven or ant) will I require to be installed on that virtual machine, in addition to JRE, for this to work?

Answer 1

If you stick to Maven , you can attack the jar uploading process to the install phase as follows:

pom.xml :

...
<plugins>
...
  <plugin>
    <artifactId>maven-antrun-plugin</artifactId>
    <configuration>
      <tasks>
        <scp todir="${targetNode}:~/" trust="true" failonerror="true"
          file="${project.build.directory}/${project.build.finalName}.jar" />
      </tasks>
    </configuration>
    <executions>
      <execution>
        <id>upload</id>
        <phase>install</phase>
        <goals>
          <goal>run</goal>
        </goals>
      </execution>
    </executions>
    <dependencies>
      <dependency>
        <groupId>org.apache.ant</groupId>
        <artifactId>ant-jsch</artifactId>
        <version>1.8.3</version>
      </dependency>
    </dependencies>
  </plugin>
...
</plugins>
...

Then issue:

mvn clean install "-DtargetNode=user:pass@machine"

Optionally write a script that runs the uploaded jar on the target machine.

Answer 2

You likely won't need Ant/Maven deployed remotely.

Can you instead ssh / scp onto that machine ? Ant has sshexec and scp tasks to allow you to copy and run stuff remotely.

Answer 3

Best way would be to create shell script that does all you need. If the machine is unix like, you can achieve all this with ssh, scp (uses ssh).

With ssh you can execute remote shell commands.

Example (all_in_one.sh):

args=$1
arg2=$2
etc.
ssh admin@amazon_instance << end
/home/admin/bin/startAmazonVM.sh $arg1
end

scp mylocal.jar admin@amazon_instance:/home/admin/server/libraries/

ssh admin@amazon_instance << end
$JAVA_HOME/bin/java -jar /home/admin/server/libraries/mylocal.jar $arg2
end

Then you can run eg all_in_one.sh (add >> output.txt to create execution output file, which you may then parse to verify the process)

If you are working on Windows, install Cygwin or MinGW, or use ant and spend some more, more time configuring tasks in it to do the things other tools do best.