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Java利用JavaCPP调用算法示例

配置liunx 环境系统

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配置so 文件存放路径

[root@arch2 ~] # cat /etc/ld.so.conf.d/so.conf

/opt/app/tools/so/

 

从新调用ldconfig 命令

ldconfig

配置java 项目

配置pom 文件

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<? xml version = "1.0" encoding = "UTF-8" ?>

< project xmlns = "http://maven.apache.org/POM/4.0.0"

  xmlns:xsi = "http://HdhCmsTestw3.org/2001/XMLSchema-instance"

  xsi:schemaLocation = "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" >

 

  < modelVersion >4.0.0</ modelVersion >

 

  < groupId >org.jacdong</ groupId >

  < artifactId >javacpptest</ artifactId >

  < version >0.1-SNAPSHOT</ version >

 

    < properties >

   

         < include.path >${basedir}/cppbuild</ include.path >

         < project.build.sourceEncoding >UTF-8</ project.build.sourceEncoding >

         < javacpp.cppbuild.skip >true

         </ javacpp.cppbuild.skip > <!-- To skip execution of cppbuild.sh: -Djavacpp.cppbuild.skip=true -->

         < javacpp.parser.skip >false

         </ javacpp.parser.skip >     <!-- To skip header file parsing phase: -Djavacpp.parser.skip=true  -->

         < javacpp测试数据piler.skip >true

         </ javacpp测试数据piler.skip > <!-- To skip native compilation phase: -Djavacpp测试数据piler.skip=true -->

         < javacpp.moduleId >${project.artifactId}</ javacpp.moduleId >

         < javacpp.platform.root ></ javacpp.platform.root >

         < javacpp.platform测试数据piler ></ javacpp.platform测试数据piler >

         < javacpp.platform.extension ></ javacpp.platform.extension >

         < javacpp.platform.linux-x86 >linux-x86</ javacpp.platform.linux-x86 >

         < javacpp.platform.linux-x86_64 >linux-x86_64</ javacpp.platform.linux-x86_64 >

         < javacpp.platform >linux-x86_64</ javacpp.platform >

 

         < skipTests >true</ skipTests >

 

     </ properties >

 

  < dependencies >

   < dependency >

    < groupId >org.bytedeco</ groupId >

    < artifactId >javacpp</ artifactId >

    < version >1.5.3</ version >

   </ dependency >

   <!-- https://mvnrepository测试数据/artifact/junit/junit -->

   < dependency >

    < groupId >junit</ groupId >

    < artifactId >junit</ artifactId >

    < version >4.12</ version >

    < scope >test</ scope >

   </ dependency >

  </ dependencies >

 

  < build >

   < plugins >

             < plugin >

                 < artifactId >maven-compiler-plugin</ artifactId >

             </ plugin >

             < plugin >

                 < artifactId >maven-jar-plugin</ artifactId >

                 < version >3.1.0</ version >

             </ plugin >

             < plugin >

                 < groupId >org.apache.maven.plugins</ groupId >

                 < artifactId >maven-dependency-plugin</ artifactId >

                 < version >2.10</ version >

             </ plugin >

             < plugin >

                 < groupId >org.bytedeco</ groupId >

                 < artifactId >javacpp</ artifactId >

                 < version >1.5.3</ version >

                 < configuration >

                     < properties >${javacpp.platform}</ properties >

                     < propertyKeysAndValues >

                         < property >

                             < name >platform.root</ name >

                             < value >${javacpp.platform.root}</ value >

                         </ property >

                         < property >

                             < name >platform测试数据piler</ name >

                             < value >${javacpp.platform测试数据piler}</ value >

                         </ property >

                         < property >

                             < name >platform.extension</ name >

                             < value >${javacpp.platform.extension}</ value >

                         </ property >

                     </ propertyKeysAndValues >

                     < classPath >${project.build.outputDirectory}</ classPath >

                     < includePaths >

                         < includePath >${basedir}/src/main/resources/linux-x86_64</ includePath >

                     </ includePaths >

                     < linkPaths >

                     </ linkPaths >

                 </ configuration >

                 < executions >

                     < execution >

                         < id >javacpp.parser</ id >

                         < phase >generate-sources</ phase >

                         < goals >

                             < goal >build</ goal >

                         </ goals >

                         < configuration >

                            < skip >false</ skip >

                             < outputDirectory >${project.build.sourceDirectory}</ outputDirectory >

                             < classOrPackageName >com.jacdong.preset.*</ classOrPackageName >

                         </ configuration >

                     </ execution >

                 </ executions >

             </ plugin >

             < plugin >

                 < artifactId >maven-surefire-plugin</ artifactId >

                 < version >2.9</ version >

                 < configuration >

                     < forkMode >once</ forkMode >

                     < environmentVariables >

                         < LD_LIBRARY_PATH >target/classes/linux-x86_64</ LD_LIBRARY_PATH >

                     </ environmentVariables >

                 </ configuration >

             </ plugin >

    < plugin >

     < groupId >org.codehaus.mojo</ groupId >

     < artifactId >exec-maven-plugin</ artifactId >

     < version >1.1</ version >

     < executions >

      < execution >

       < id >build-jnilib</ id >

       < phase >process-classes</ phase >

       < goals >

        < goal >exec</ goal >

       </ goals >

       < configuration >

        < executable >java</ executable >  

                             < commandlineArgs >-jar ./libs/javacpp-1.5.jar -Xcompiler -g -Xcompiler -ggdb -nodelete -d target/classes/linux-x86_64 -Xcompiler -I${env.JAVA_HOME}/include -Xcompiler -I${env.JAVA_HOME}/include/linux -Xcompiler -fvisibility=default -Xcompiler -rdynamic -Xcompiler -std=c++11 -classpath target/classes com.jacdong.wrapper.JavaCPPTest</ commandlineArgs >

        </ configuration >

      </ execution >

     

      < execution >

                         < id >echoPath</ id >

                         < phase >install</ phase >

                         < goals >

                             < goal >exec</ goal >

                         </ goals >

                         < configuration >

                             < executable >echo</ executable >

                             < commandlineArgs >"sudo cp ${basedir}/target/classes/linux-x86_64/*.so /usr/lib/;sudo ldconfig"</ commandlineArgs >

 

                         </ configuration >

                     </ execution >

     </ executions >

    </ plugin >

    < plugin >

     < artifactId >maven-clean-plugin</ artifactId >

     < version >3.1.0</ version >

     < configuration >

      < filesets >

       < fileset >

        < directory >src/main/java/com/jacdong/rtcm/wrapper/</ directory >

        < includes >

         < include >JavaCPPTestTmp.java</ include >

        </ includes >

        < followSymlinks >false</ followSymlinks >

       </ fileset >

      </ filesets >

     </ configuration >

    </ plugin >

   </ plugins >

   < pluginManagement >

    < plugins >

     <!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the Maven build itself.-->

     < plugin >

      < groupId >org.eclipse.m2e</ groupId >

      < artifactId >lifecycle-mapping</ artifactId >

      < version >1.0.0</ version >

      < configuration >

       < lifecycleMappingMetadata >

        < pluginExecutions >

         < pluginExecution >

          < pluginExecutionFilter >

           < groupId >org.bytedeco</ groupId >

           < artifactId >javacpp</ artifactId >

           < versionRange >

            [1.5.3,)

           </ versionRange >

           < goals >

            < goal >build</ goal >

           </ goals >

          </ pluginExecutionFilter >

          < action >

           < ignore ></ ignore >

          </ action >

         </ pluginExecution >

         < pluginExecution >

          < pluginExecutionFilter >

           < groupId >

            org.codehaus.mojo

           </ groupId >

           < artifactId >

            exec-maven-plugin

           </ artifactId >

           < versionRange >

            [1.1,)

           </ versionRange >

           < goals >

            < goal >exec</ goal >

           </ goals >

          </ pluginExecutionFilter >

          < action >

           < ignore ></ ignore >

          </ action >

         </ pluginExecution >

        </ pluginExecutions >

       </ lifecycleMappingMetadata >

      </ configuration >

     </ plugin >

    </ plugins >

   </ pluginManagement >

  </ build >

</ project >

配置文件当中需要主要的几点

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<!--第一次生成javacpp 文件的时候，skip 一定要设置为false ，后期对于生成的类进行了处理之后，为了避免每次运行都重启，可以把skip 设置为true-->

< configuration >

     < skip >false</ skip >

     < outputDirectory >${project.build.sourceDirectory}</ outputDirectory >                                       < classOrPackageName >com.jacdong.preset.* </ classOrPackageName >

</ configuration >

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<!--commandlineArgs 一定不要换行-->

< configuration >

  < executable >java</ executable >  

     < commandlineArgs >-jar ./libs/javacpp-1.5.jar -Xcompiler -g -Xcompiler -ggdb -nodelete -d target/classes/linux-x86_64 -Xcompiler -I${env.JAVA_HOME}/include -Xcompiler -I${env.JAVA_HOME}/include/linux -Xcompiler -fvisibility=default -Xcompiler -rdynamic -Xcompiler -std=c++11 -classpath target/classes com.jacdong.wrapper.SingleStationIono</ commandlineArgs >

</ configuration >

定义自己的map 类

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@Properties (target = "com.jacdong.wrapper.JavaCPPTestTmp" ,

value = { @Platform (include = { "javacpp.h" },

         compiler = "cpp11" )})

public class JavacppMapper implements InfoMapper{

 

  public void map(InfoMap infoMap) {

         infoMap.put( new Info().cppNames( "_stdcall" ).skip())

         .put();

}

}

注意点

在利用javacpp 的时候，经常会出现找不到so 文件的情况，这个时候，大家可以把so 文件copy 到/usr/lib 目录下，然后更改相应的权限。

到此这篇关于Java利用JavaCPP调用算法示例的文章就介绍到这了,更多相关Java JavaCPP调用内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持！

原文链接：https://blog.csdn.net/Johnny_DongBin/article/details/120967767

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