Java 访问 C++ 方法：JavaCPP
jopen
9年前
JavaCPP提供了在Java中高效访问本地C++的方法。采用JNI技术实现，支持所有Java实现包括Android系统，Avian 和 RoboVM。
JavaCPP提供了一系列的Annotation将Java代码映射到C++代码，并使用一个可执行的jar包将C++代码转化为可以从JVM内调用的动态链接库文件。
Maven:
<dependency> <groupId>org.bytedeco</groupId> <artifactId>javacpp</artifactId> <version>0.11</version> </dependency>
使用方法：
C++：
#include <string> namespace LegacyLibrary { class LegacyClass { public: const std::string& get_property() { return property; } void set_property(const std::string& property) { this->property = property; } std::string property; }; } Java：
import org.bytedeco.javacpp.*; import org.bytedeco.javacpp.annotation.*; @Platform(include="LegacyLibrary.h") @Namespace("LegacyLibrary") public class LegacyLibrary { public static class LegacyClass extends Pointer { static { Loader.load(); } public LegacyClass() { allocate(); } private native void allocate(); // to call the getter and setter functions public native @StdString String get_property(); public native void set_property(String property); // to access the member variable directly public native @StdString String property(); public native void property(String property); } public static void main(String[] args) { // Pointer objects allocated in Java get deallocated once they become unreachable, // but C++ destructors can still be called in a timely fashion with Pointer.deallocate() LegacyClass l = new LegacyClass(); l.set_property("Hello World!"); System.out.println(l.property()); } }