Jython and Java

The Python script needs to be called in the Java JVM process during the past two days. The script language is really awkward when I got down to Jython trainer. I used Python a few years ago when I wrote an automated testing tool, but I forgot about it. Okay, go straight to the topic.

 

Prerequisites:

Sun-jre1.6, Jython 2.5

2. In the next jython_installer-2.5.0.jar under the official website, all the way to next, in/Jython-install-path/There Is A Jython. jar, the Jython. Jar import into the Java project.

 

Code:

 

Fibo. py

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# Fibonacci numbers Module

Def fib (n): # Write Fibonacci series up to n

A, B = 0, 1

While B <n:

Print B,

A, B = B, A + B

Def fib2 (n): # Return Fibonacci series up to n

Result = []

A, B = 0, 1

While B <n:

Result. append (B)

A, B = B, A + B

Return result

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Testjython. Java

 

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Package platform. OAAS. ******. Other. test;

Import org. Python. Core. pyexception;
Import org. Python. Core. pyfile;
Import org. Python. Core. pyobject;
Import org. Python. Core. pystring;
Import org. Python. util. pythoninterpreter;

Public class testjython {

/**
* Pay attention to Jython in the following aspects:
* 1. How to import a Jython module from a specified path?
* 2. How to call the methods in the module?
* 3. How should I transmit parameters between Java and Jython?
*
* @ Param ARGs
* @ Throws pyexception
*/
Public static void main (string [] ARGs) throws pyexception
{
Pythoninterpreter interp = new pythoninterpreter ();

// 1.
// Introduce the system module and add [./pythonsrc] to the module search path.
Interp.exe C ("Import sys ");
Interp.exe C ("SYS. Path. append ('./pythonsrc ')");

// 2. Introduce the fibo, execute the fibo. Fib (100), OK
Interp.exe C ("Import fibo ");
Interp.exe C ("Maid (100 )");

// 3. Get the variable value of the python built-in type in the Java program.
String text = "'This is a bad Day '";
Interp.exe C ("x =" + TEXT + "+ '!!! '");
Interp.exe C ("Print X ");
Pyobject object = interp. Get ("X ");
Pystring xstring = object. _ STR __();
String outx = xstring. asstring ();

Interp.exe C ("_ file = open ('/home/Fore/work/oaassearch/search/oaas_search/workspace/oaas-search0.1/pythonsrc/fibo. py ')");
Object = interp. Get ("_ file ");
Pyfile file = (pyfile) object;
Pystring content = file. Read (100 );
System. Out. println (content );

Interp.exe C ("array = _ file. Read (100 )");
String Array = interp. Get ("array"). asstring ();
System. Out. println (array );

Interp.exe C ("_ file. Close ()");
File. Close ();
}
}
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