我正在使用Jython将字符串值传递给python脚本。在我的程序中,我做了几次。但是,在测试期间,我正在运行以查看发送参数的类是否正常运行,我发现python脚本输出的字符串值与初始输入相同。
这是Java类:
public class SendToCal
{
PythonInterpreter interp = null;
StringWriter clout = null;
String [] arguments = null;
private String start=null,end=null,subject = null;
Properties props = new Properties();
public SendToCal(String start,String end, String subject)
{
try{
setInputs(start,end,subject);
arguments = getInputs(start,end,subject);
//---------------------------------------------
//---------------trying out jython test--------
props.setProperty("python.path","C:\\folder\\where\\I\\have\\stuff\\2.7-b1\\Lib', '__classpath__', '__pyclasspath__/");
PythonInterpreter.initialize(System.getProperties(), props,arguments);
this.interp = new PythonInterpreter();
clout = new StringWriter();
interp.setOut(clout);
interp.execfile("C:\\folder\\to\\file\\pyscript.py");
String outputStr = clout.toString();
System.out.println(outputStr);
clout.close();
}catch(IOException ex)
{
ex.printStackTrace();
}
}
public void setInputs(String start, String end, String sub)
{
this.start = start;
this.end = end;
this.subject = sub;
}
public String[] getInputs(String start, String end, String sub)
{
String [] arr = {this.start,this.end,this.subject};
return arr;
}
public static void main(String[] args) throws InterruptedException
{
String st2 = 2018+"-"+ 8 +"-"+ 6+ " " +"12:00";
String en2 = 2018+"-"+ 8 +"-"+ 6+ " " +"11:59";
String su2 = "YAY PYTHON AGAIN!!";
new SendToCal(st2, en2, su2);
TimeUnit.SECONDS.sleep(1);
String st = 1999+"-"+ 7 +"-"+ 17+ " " +"12:00";
String en = 1999+"-"+ 7 +"-"+ 17+ " " +"11:59";
String su = "YAY PYTHON!!";
new SendToCal(st, en, su);
}
}
另外,以下是我的python脚本:
import sys
def pyscript(arg1,arg2,arg3):
print ("calling python function with parameters:")
print arg1
print arg2
print arg3
pyscript(sys.argv[0],sys.argv[1],sys.argv[2])
我的问题是,当我使用两个或多个完全不同的字符串数组调用Java构造函数时,python的输出与第一个数组输入的重复。任何帮助表示赞赏。
我得到以下输出:
calling python function with parameters:
2018-8-6 12:00
2018-8-6 11:59
YAY PYTHON AGAIN!!
calling python function with parameters:
2018-8-6 12:00
2018-8-6 11:59
YAY PYTHON AGAIN!!
我预计:
calling python function with parameters:
2018-8-6 12:00
2018-8-6 11:59
YAY PYTHON AGAIN!!
calling python function with parameters:
1999-7-17 12:00
1999-7-17 11:59
YAY PYTHON AGAIN!!
最佳答案
PythonInterpreter.initialize()
方法仅应调用一次。它在程序中被调用了两次,第二次,sys.argv
未更新。
一种解决方法是将pyscript.py用作模块并调用模块中定义的函数。
用以下内容替换interp.execfile("pyscript.py");
:
interp.exec("from pyscript import pyscript");
PyObject func = interp.get("pyscript");
func.__call__(new PyString(start), new PyString(end), new PyString(subject));