Making HTTP post request (with an input type=“file”) from within Maven, using command line parameters if possible

Question

I would like to convert this bash script:

#!/bin/bash
if ! [ $# == 2 ]; then
   echo Usage: update-module admin-password module-file
   exit 1
fi
if ! [ -f $2 ];         


        

Answer 1

Try the Exec Maven Plugin. You might want to just store the cookie in ${project.build.directory} instead of /tmp (and then you don't need to remove it.

You can use any property name for the host you like, say host.name. You should set a default in the POM:

<properties>
  <host.name>...</host.name>
</properties>

That can be overridden with -Dhost.name=... on the command line.

Answer 2

Use GMaven to embed an inline Groovy Script, and use apache httpclient to implement the post request. Something like this:

<plugin>
    <groupId>org.codehaus.groovy.maven</groupId>
    <artifactId>gmaven-plugin</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.0.2</version>
        </dependency>
    </dependencies>
    <executions>
        <execution>
            <phase>generate-resources</phase>
            <goals>
                <goal>execute</goal>
            </goals>
            <configuration>
                <source><![CDATA[

                    import org.apache.http.HttpResponse;
                    import org.apache.http.client.HttpClient;
                    import org.apache.http.client.methods.HttpPost;
                    import org.apache.http.entity.InputStreamEntity;
                    import org.apache.http.impl.client.DefaultHttpClient;

                    String url = pom.properties['http.url'];
                    File file = new File(pom.properties['http.attachmentFile'])
                    HttpClient client = new DefaultHttpClient();
                    HttpPost post = new HttpPost(url);
                    InputStreamEntity entity = new InputStreamEntity(file.newInputStream());
                    post.setEntity entity;
                    HttpResponse response = client.execute(post);

                ]]></source>
            </configuration>
        </execution>
    </executions>
</plugin>

This uses the maven properties http.url and http.attachmentFile that you can specify on the command line using the -D syntax or in a pom.xml file in a <properties> block. Obviously, you'd need to extend the functionality to what else your shell script is doing, but this should get you started.