Java 訪問 C++ 方法 JavaCPP
 JavaCPP提供了一系列的Annotation將Java代碼映射到C++代碼,并使用一個可執(zhí)行的jar包將C++代碼轉(zhuǎn)化為可以從JVM內(nèi)調(diào)用的動態(tài)鏈接庫文件。
 JavaCPP提供了在Java中高效訪問本地C++的方法。采用JNI技術實現(xiàn),支持所有Java實現(xiàn)包括Android系統(tǒng),Avian 和 RoboVM。
JavaCPP提供了一系列的Annotation將Java代碼映射到C++代碼,并使用一個可執(zhí)行的jar包將C++代碼轉(zhuǎn)化為可以從JVM內(nèi)調(diào)用的動態(tài)鏈接庫文件。
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());
 - }
 - }
 
責任編輯:王雪燕 
                    來源:
                    開源中國社區(qū)
 














 
 
 
 
 
 
 