Retrieving All Dependencies Required by a JAR at Runtime
Let's say that you have a project like browserup-proxy that has a handy startup script that requires you provide the full Java classpath to execute it, which you want to distribute inside a Git repo, or a Docker image.
Although there are online tools which may be able to do this for us, we should also strive to have something locally without relying on (potentially unsafe) online tools.
Fortunately, we can use Gradle's inbuilt dependency management for this. By setting up a Gradle project with the following build.gradle:
plugins {
id 'java'
}
ext {
browserUpVersion = '2.0.1'
}
dependencies {
implementation "com.browserup:browserup-proxy-core:$browserUpVersion"
implementation "com.browserup:browserup-proxy-mitm:$browserUpVersion"
implementation "com.browserup:browserup-proxy-rest:$browserUpVersion"
}
task buildZip(type: Zip) {
from configurations.runtimeClasspath
}
repositories {
mavenCentral()
}
Now, when we run ./gradlew clean buildZip, it will produce a ZIP file with all the JARs required to execute correctly:
Archive: build/distributions/gradle-jars.zip
Length Date Time Name
--------- ---------- ----- ----
60059 2021-12-16 14:30 browserup-proxy-rest-2.0.1.jar
202106 2021-12-16 14:30 browserup-proxy-core-2.0.1.jar
212489 2021-12-16 14:30 browserup-proxy-mitm-2.0.1.jar
80673 2021-12-16 14:30 swagger-jaxrs2-2.0.9.jar
30501 2021-12-16 14:30 swagger-integration-2.0.9.jar
162978 2021-12-16 14:30 swagger-core-2.0.9.jar
128076 2021-12-16 14:01 jaxb-api-2.3.1.jar
273273 2021-12-16 14:30 sitebricks-0.8.11.jar
75204 2021-12-16 14:30 jersey-media-json-jackson-2.29.jar
27403 2021-12-16 14:30 sitebricks-client-0.8.11.jar
49925 2021-12-16 14:30 sitebricks-converter-0.8.11.jar
15861 2021-12-16 14:30 jackson-jaxrs-json-provider-2.9.9.jar
32627 2021-12-16 14:30 jackson-module-jaxb-annotations-2.9.9.jar
100674 2021-12-16 14:30 jackson-datatype-jsr310-2.9.9.jar
32373 2021-12-16 14:30 jackson-jaxrs-base-2.9.9.jar
1348229 2021-12-16 14:30 jackson-databind-2.9.9.1.jar
42456 2021-12-16 14:30 jackson-dataformat-yaml-2.9.9.jar
325632 2021-12-16 14:30 jackson-core-2.9.9.jar
118276 2021-12-16 14:30 swagger-models-2.0.9.jar
66897 2021-12-16 14:30 jackson-annotations-2.9.9.jar
135336 2021-12-16 14:30 littleproxy-2.0.0-beta-5.jar
82706 2021-12-16 14:30 guice-servlet-4.2.2.jar
6106 2021-12-16 14:30 guice-multibindings-4.2.2.jar
846627 2021-12-16 14:30 guice-4.2.2.jar
2746671 2021-12-16 14:30 guava-27.1-jre.jar
71976 2021-10-27 08:51 jzlib-1.1.3.jar
320748 2021-12-16 14:30 dnsjava-2.1.9.jar
4062498 2021-12-16 14:30 netty-all-4.1.39.Final.jar
870638 2021-12-16 14:30 bcpkix-jdk15on-1.62.jar
4558151 2021-12-16 14:30 bcprov-jdk15on-1.62.jar
98115 2021-10-27 08:52 dec-0.1.2.jar
81751 2021-12-16 14:30 jersey-hk2-2.29.jar
188187 2021-12-16 14:30 hk2-locator-2.5.0.jar
780265 2021-12-16 14:30 javassist-3.25.0-GA.jar
182089 2021-11-26 09:57 selenium-api-3.141.59.jar
16461 2021-12-16 14:30 jcl-over-slf4j-1.7.28.jar
322611 2021-12-16 14:30 async-http-client-1.6.3.jar
41117 2021-12-16 14:30 slf4j-api-1.7.28.jar
78146 2021-07-15 08:01 jopt-simple-5.0.4.jar
127566 2021-12-16 14:30 jetty-servlet-9.4.20.v20190813.jar
116947 2021-12-16 14:30 jetty-security-9.4.20.v20190813.jar
657307 2021-12-16 14:30 jetty-server-9.4.20.v20190813.jar
503880 2021-10-27 08:52 commons-lang3-3.9.jar
73343 2021-12-16 14:30 jersey-container-servlet-core-2.29.jar
53110 2021-12-16 14:30 jersey-bean-validation-2.29.jar
29942 2021-12-16 14:30 swagger-jaxrs2-servlet-initializer-2.0.9.jar
56674 2021-07-06 12:05 javax.activation-api-1.2.0.jar
4617 2021-04-23 09:15 failureaccess-1.0.1.jar
2199 2021-04-23 09:15 listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar
19936 2021-03-12 16:55 jsr305-3.0.2.jar
193322 2021-06-16 08:53 checker-qual-2.5.2.jar
13694 2021-06-16 08:53 error_prone_annotations-2.2.0.jar
8782 2021-06-16 08:53 j2objc-annotations-1.1.jar
3448 2021-06-16 08:53 animal-sniffer-annotations-1.17.jar
1816937 2021-07-15 08:02 barchart-udt-bundle-2.3.0.jar
2497 2021-10-19 08:34 javax.inject-1.jar
4467 2021-10-27 08:51 aopalliance-1.0.jar
7083 2021-12-16 14:30 sitebricks-annotations-0.8.11.jar
741232 2021-12-16 14:30 mvel2-2.1.3.Final.jar
2254 2021-03-12 16:55 jcip-annotations-1.0.jar
5594 2021-12-16 14:30 annotations-7.0.3.jar
300845 2021-12-16 14:30 jsoup-1.8.1.jar
926649 2021-12-16 14:30 jersey-server-2.29.jar
1155887 2021-12-16 14:30 hibernate-validator-6.0.17.Final.jar
93107 2021-12-16 14:30 validation-api-2.0.1.Final.jar
95806 2021-07-15 08:01 javax.servlet-api-3.1.0.jar
207850 2021-12-16 14:30 jetty-http-9.4.20.v20190813.jar
156134 2021-12-16 14:30 jetty-io-9.4.20.v20190813.jar
218808 2021-12-16 14:30 jersey-client-2.29.jar
86010 2021-12-16 14:30 jersey-media-jaxb-2.29.jar
1157956 2021-12-16 14:30 jersey-common-2.29.jar
187228 2021-12-16 14:30 hk2-api-2.5.0.jar
117332 2021-12-16 14:30 hk2-utils-2.5.0.jar
5408 2021-12-16 14:30 jakarta.inject-2.5.0.jar
83786 2021-12-16 14:30 jersey-entity-filtering-2.29.jar
140262 2021-12-16 14:30 jakarta.ws.rs-api-2.1.5.jar
78859 2021-12-16 14:30 jakarta.el-api-3.0.2.jar
237055 2021-12-16 14:30 jakarta.el-3.0.2.jar
428343 2021-12-16 14:30 classgraph-4.6.32.jar
34734 2021-12-16 14:30 swagger-annotations-2.0.9.jar
431406 2021-12-16 14:30 xstream-1.3.1.jar
790250 2021-12-16 14:30 netty-3.2.4.Final.jar
538722 2021-12-16 14:30 jetty-util-9.4.20.v20190813.jar
25150 2021-12-16 14:30 jakarta.annotation-api-1.3.4.jar
19479 2021-12-16 14:30 osgi-resource-locator-1.0.3.jar
14212 2021-12-16 14:30 aopalliance-repackaged-2.5.0.jar
66469 2021-12-16 14:30 jboss-logging-3.3.2.Final.jar
65100 2021-12-16 14:30 classmate-1.3.4.jar
301298 2021-11-29 08:26 snakeyaml-1.23.jar
24956 2021-12-16 14:30 xpp3_min-1.1.4c.jar
--------- -------
31309843 90 files
A sample project can be found at jamietanna/gradle-download-jars.
