visual studio2022 JNI开发流程的实现

package com.example;

public class JniTest {

    public native void printExt();
    
}

javah -classpath . -jni com.example.JniTest

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class com_example_JniTest */

#ifndef _Included_com_example_JniTest
#define _Included_com_example_JniTest
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     com_example_JniTest
 * Method:    printExt
 * Signature: ()V
 */
JNIEXPORT void JNICALL Java_com_example_JniTest_printExt
  (JNIEnv *, jobject);

#ifdef __cplusplus
}
#endif
#endif

#pragma execution_character_set("utf-8")//设置字符编码，不然java中显示乱码
#include "com_example_JniTest.h"
#include <iostream>
using namespace std;//引入命名空间std，使得std::cout和std::endl可以直接省去std::


JNIEXPORT void JNICALL Java_com_example_JniTest_printExt
(JNIEnv*, jobject) {
	cout << "现在你正在调用c++的实现" << endl;
}

package com.example;

// Press Shift twice to open the Search Everywhere dialog and type `show whitespaces`,
// then press Enter. You can now see whitespace characters in your code.
public class Main {

    static {
        System.load("D:\\ItemProjects\\cpp\\JniProject\\x64\\Debug\\JniProject.dll");
    }

    public static void main(String[] args) {
        new JniTest().printExt();
    }
}