Java read-write Python script

1. Import the Jython.jar package in the Java project of Eclipse or MyEclipse. http://down.51cto.com/data/2094597

2. Write a tool class that reads Python.

import org.python.util.pythoninterpreter;import java.io.fileinputstream;import  Java.io.ioexception;import java.io.inputstream;import java.util.arraylist;import java.util.list ; import java.util.map;import org.python.core.pyobject;public final class jythonutil  {         private jythonutil () {}          /**     *  execute a. py file       *  @param  filePath     *  @throws  IOException      */    public static void pythonexecute (String  FilePath)  throws IOException{        PythonInterpreter  Pin = new pythoninterpreter ();        inputstream  Is = new fileinputstream (filEpath);         pin.execfile (IS);         is.close ();     }         /**      *  get variable values for Python programs      *  @param  filepath      *  @param  ponames     *  @return       *  @throws  IOException     */     public static list<pyobject> transp2jdata (String filepath, string ... Ponames)  throws IOException{        PythonInterpreter  Pin = new pythoninterpreter ();        inputstream  Is = new fileinputstream (FilePath);         pin.execfile (IS);          is.close ();         list<pyobject> pos  = new arraylist ();        for  (String poname  : ponames)  {            pyobject  po = pin.get (Poname);             Pos.add (PO);        }         return pos;    }         /**      *  assigning parameters to Python program execution      *  @param  filePath      *  @param  pomaps     *  @throws  IOException      */    public static void transj2pdata (String  filepath, map&Lt String, object> pomaps)  throws IOException {         pythoninterpreter pin = new pythoninterpreter ();         inputstream is = new fileinputstream (FilePath);         for  (String pomapkey : pomaps.keyset ())  {             pin.set (Pomapkey, pomaps.get (pomapkey));         }        pin.execfile (IS);         is.close ();    }          /**     *  assigns the parameter to the Python program execution and gets the value of the variable in Python       *  @param  filePath     *  @param  pomaps      *  @param  ponames     *  @return      * @ Throws ioexception     */    public static list <pyobject> transj2pdata (String filepath, map<string, object> pomaps,  string...ponames)  throws IOException {         Pythoninterpreter pin = new pythoninterpreter ();         inputstream is = new fileinputstream (FilePath);         for  (String pomapkey : pomaps.keyset ())  {             pin.set (Pomapkey, pomaps.get (pomapkey));         }        pin.execfile (IS);        &nBsp;is.close ();         list<pyobject> pos = new  arraylist ();        for  (string poname :  Ponames)  {            pyobject po =  pin.get (Poname);             pos.add (PO);         }        return  pos;    } }

3. Test whether the Python script calling *.py can be used

Import Java.io.ioexception;public class Jythonutiltest {/** * @param args */public static void main (string[] args) {String Path = "e:\\pythonscript\\hello.py"; try {//) executes *.py script through the Pythonexecute method of the tool class, passing in the file path Jythonutil.pythonexecute (path); SYSTEM.OUT.PRINTLN ("Successful Execution");} catch (IOException e) {e.printstacktrace ();}}}

4. Execution Result:

1. The contents of Hello.pyweb file are as follows:

Print ("Hello");

2. Execution Result:

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Java read-write Python script