通过传递参数和结果从Java调用Python代码

Question

任何人都可以通过传递参数和返回结果来显示一个从java代码调用python脚本的简单工作例子（java + python代码）吗？

Answer 1

尝试使用Java ScriptEngine将代码作为Jython运行。

样例程序：

import javax.script.ScriptEngine; 
import javax.script.ScriptEngineManager; 
import javax.script.ScriptException; 

public class Main { 

    /** 
    * @param args the command line arguments 
    */ 
    public static void main(String[] args) throws ScriptException { 
     ScriptEngine engine = new ScriptEngineManager().getEngineByName("python"); 

     // Using the eval() method on the engine causes a direct 
     // interpretataion and execution of the code string passed into it 
     engine.eval("import sys"); 
     engine.eval("print sys"); 

     // Using the put() method allows one to place values into 
     // specified variables within the engine 
     engine.put("a", "42"); 

     // As you can see, once the variable has been set with 
     // a value by using the put() method, we an issue eval statements 
     // to use it. 
     engine.eval("print a"); 
     engine.eval("x = 2 + 2"); 

     // Using the get() method allows one to obtain the value 
     // of a specified variable from the engine instance 
     Object x = engine.get("x"); 
     System.out.println("x: " + x); 
    } 

} 

你需要在你的classpath中的Jython引擎罐子。寻找它here