Python与Java进行交互操作的方法与性能对比

import subprocess

# 定义 Java 类路径和类名
java_class_path = "HelloWorld.jar"
java_class_name = "com.example.HelloWorld"

# 执行 Java 程序并传递参数
result = subprocess.run(
    ["java", "-cp", java_class_path, java_class_name, "arg1", "arg2"],
    capture_output=True,
    text=True
)

print("Java Output:", result.stdout)
print("Java Error:", result.stderr)

import org.python.util.PythonInterpreter;

public class JythonDemo {
    public static void main(String[] args) {
        PythonInterpreter interpreter = new PythonInterpreter();
        interpreter.exec("print('Hello from Python!')");
        interpreter.execfile("path/to/your_script.py");
    }
}

import jpype

# 启动 JVM（需指定 JDK 路径）
jpype.startJVM(
    jpype.getDefaultJVMPath(),
    "-Djava.class.path=HelloWorld.jar",
    convertStrings=False
)

# 导入 Java 类
HelloWorld = jpype.JClass("com.example.HelloWorld")
instance = HelloWorld()

# 调用 Java 方法
output = instance.sayHello("World")
print("Java Method Output:", output)

# 关闭 JVM
jpype.shutdownJVM()

import py4j.GatewayServer;public class JavaApp {
    public String greet(String name) {


        return "Hello, " + name + "!";
    }

    public static void main(String[] args) {
        GatewayServer server = new GatewayServer(new JavaApp());
        server.start();
    }
}

from py4j.java_gateway import JavaGateway

# 连接 Java 网关
gateway = JavaGateway()
java_app = gateway.entry_point

# 调用 Java 方法
message = java_app.greet("Python")
print("Java Response:", message)

@RestController
public class ApiController {
    @GetMapping("/greet")
    public String greet(@RequestParam String name) {
        return "Hello, " + name;
    }
}

import requests

response = requests.get("http://localhost:8080/greet", params={"name": "Python"})
print("API Response:", response.text)