Mac安装:
pip 安装
pip install py4j py4j.jar包路径:/usr/share/py4j/py4j0.x.jar or /usr/local/share/py4j/py4j0.x.jar
conda 安装(或者使用Anaconda-Navigator安装)
conda install py4j py4j.jar包路径:/anaconda3/share/py4j/py4j0.x.jar
使用:
1、java代码
// 需要导入py4j.jar包 import py4j.GatewayServer; import java.util.Random; public class EntryPoint { private static final Random random = new Random(); public int randInt() { return random.nextInt(); } public static void main(String[] args) { EntryPoint app = new EntryPoint(); // py4j服务 GatewayServer gatewayServer = new GatewayServer(app); gatewayServer.start(); System.out.println("Gateway Server Started"); } }
2、Python代码
from py4j.java_gateway import JavaGateway # 初始化 gateway = JavaGateway() def main(): # 调用Java-EntryPoint中的randInt函数 a = gateway.entry_point.randInt() print(a) if __name__ == '__main__': main()
注意:
1.导入py4j.jar包
2.运行Java代码
3.运行Python代码(必须在2之后)
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