spring boot - Gradle: Fail on adding systemProperty -


i'm trying add .dll file "java.library.path" system property via gradle on spring boot project. i'm using gradle 2.1 on sts. small piece of groove code within build.gradle:

tasks.withtype(javacompile) {     systemproperty "java.library.path", file("./src/main/resources/meta-inf/opencv-2.4.9/windows_bin/x64") }

and i'm getting following error:

could not find method systemproperty() arguments [java.library.path, d:\github\tfg_1\guiatv\src\main\resources\meta-inf\opencv-2.4.9\windows_bin\x64] on root project 'guiatv'

that path exists, don't know problem is.

any help? thank you!

update 1:

@amnon shochot try add native library (.dll) project. took idea sites (for example, http://zouxifeng.github.io/2014/07/17/add-system-property-to-spring-boot.html, https://github.com/cjstehno/coffeaelectronica/wiki/going-native-with-gradle).

the first 1 using suggested:

tasks.withtype(javaexec) {     systemproperty "java.library.path", file("./libs") }

the second 1 using:

run {     systemproperty 'java.library.path', file( 'build/natives/windows' ) }

none of them working me. first 1 (with javaexec) failing gradle test throwing:

java.lang.unsatisfiedlinkerror: no opencv_java249 in java.library.path     @ java.lang.classloader.loadlibrary(classloader.java:1865)     @ java.lang.runtime.loadlibrary0(runtime.java:870)

if follow trace, it's crashing @ runtime in sentence: system.loadlibrary(core.native_library_name);

and second 1 failing on gradle build following message:

could not find method run() arguments [build_24sfpo0st6dokeq7fn3ad7r34$_run_closure7@2652c3da] on root project 'guiatv'.

luckily know try achieve , can solve problem.

thank interest!

update 2:

finally, ended adding these lines build.gradle script:

// following makes "gradle build", "gradle test" work test {     jvmargs = ['-djava.library.path=./src/main/resources/meta-inf/opencv-2.4.9/windows_bin/x64'] }  // thw following makes "gradle run" work run {     jvmargs = ['-djava.library.path=./src/main/resources/meta-inf/opencv-2.4.9/windows_bin/x64'] }

by way, i'm using "spring-boot" gradle plugin. that's run task comes from. so, can execute "gradle build", "gradle test" , "gradle run" sucessfully. is, native library correctly added. however, since i'm using "eclipse" gradle plugin, add native library executing "gradle eclipse". instead, must create library on eclipse manually, , add project.

thank @amnon collaboration. i'll posting new solution in case found it.

the problem not set context systemproperty method gradle tries locate in project object not exist reason error got.

if wanted apply configuration tasks of type javacompile code should have been looked like:

tasks.withtype(javacompile) { javacompile t ->     t.systemproperty "java.library.path", file("./src/main/resources/meta-inf/opencv-2.4.9/windows_bin/x64") }

however, javacompile task type not contain systemproperty code wouldn't work either.

you can define compileoptions javacompile task using options property, i.e.:

tasks.withtype(javacompile) { javacompile t ->     t.options "java.library.path", file("./src/main/resources/meta-inf/opencv-2.4.9/windows_bin/x64") }

however, i'm not sure whether can define specific system property.

one last note - systemproperty method exist tasks of type javaexec in case intended do.


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