Java与Python之间使用jython工具类实现数据交互

import java.util.List;import java.util.Map;import java.util.Properties;import org.apache.poi.ss.formula.functions.T;import org.python.core.PyFunction;import org.python.core.PyInteger;import org.python.core.PyObject;import org.python.core.PyString;import org.python.util.PythonInterpreter;/**   * @ClassName: JythonUtils   * @Description:TODO(jython 工具类)   * @author: zy * @date: *    * @Copyright: 2018 Inc. All rights reserved.  * 注意： */public class JythonUtils { /**   * @Title: jythonInit   * @Description: TODO(初始化jython)   * @param: @return    * @return: PythonInterpreter    * @throws   */ public static PythonInterpreter jythonInit(){ //初始化site 配置 Properties props = new Properties();    props.put("python.home", ""); //python Lib 或 jython Lib,根据系统中该文件目录路径    props.put("python.console.encoding", "UTF-8");        props.put("python.security.respectJavaAccessibility", "false");        props.put("python.import.site", "false");    Properties preprops = System.getProperties();    PythonInterpreter.initialize(preprops, props, new String[0]);    //创建PythonInterpreter 对象 PythonInterpreter interp = new PythonInterpreter(); return interp; } /**   * @Title: loadPythonFile   * @Description: TODO(加载python 源码文件，)   * @param: @param interp * @param: @param filePath ，比如：F://jpython_jar//jpythonTest//pythonTest.py 或/testpython/test.py * @param: @return    * @return: PythonInterpreter    * @throws   */ public static PythonInterpreter loadPythonFile(PythonInterpreter interp, String filePath){ interp.execfile(filePath); return interp; } /**   * @Title: loadPythonFunc   * @Description: TODO(加载python 源码文件中的某个方法)   * @param: @param interp * @param: @param functionName * @param: @return    * @return: PyFunction    * @throws   */ public static PyFunction loadPythonFunc(PythonInterpreter interp, String functionName){ //加载方法   PyFunction func = (PyFunction) interp.get(functionName,PyFunction.class); return func; } /**   * @Title: execFunc   * @Description: TODO(执行无参方法,返回PyObject)   * @param: @param func    * @return: PyObject    * @throws   */ public static PyObject execFunc(PyFunction func){ PyObject pyobj = func.__call__(); return pyobj; } /**   * @Title: execFuncToString   * @Description: TODO(执行无参方法,返回一个字符串)   * @param: @param func * @param: @return    * @return: String    * @throws   */ public static String execFuncToString(PyFunction func){ PyObject pyobj = execFunc(func); return (String) pyobj.__tojava__(String.class); } /**   * @Title: execFuncToString   * @Description: TODO(执行有参方法,返回一个字符串)   * @param: @param func * @param: @param paramName ，参数名 * @param: @return    * @return: String    * @throws   */ public static String execFuncToString2(PyFunction func, String paramName){  PyObject pyobj = func.__call__(new PyString(paramName)); return (String) pyobj.__tojava__(String.class); } /**   * @Title: execFuncToInteger   * @Description: TODO(执行无参方法,返回一个Integer)   * @param: @param func * @param: @return    * @return: Integer    * @throws   */ public Integer execFuncToInteger(PyFunction func){ PyObject pyobj = execFunc(func); return (Integer) pyobj.__tojava__(Integer.class); } /**   * @Title: execFuncToList   * @Description: TODO(执行无参方法,返回一个List)   * @param: @param func * @param: @return    * @return: List<T>    * @throws   */ public List<T> execFuncToList(PyFunction func){ PyObject pyobj = execFunc(func); return (List<T>) pyobj.__tojava__(List.class); } /**   * @Title: execFuncToMap   * @Description: TODO(执行无参方法,返回一个Map<String, Object>)   * @param: @param func * @param: @return    * @return: Map<String,Object>    * @throws   */ public Map<String, Object> execFuncToMap(PyFunction func){ PyObject pyobj = execFunc(func); return (Map<String, Object>) pyobj.__tojava__(Map.class); } public void execFuncToByParamsList(PyFunction func, List<T> paramsList){ } public static void main(String[] args){ PythonInterpreter interp = jythonInit(); //文件名 String filePath = "F://jpython_jar//jpythonTest//pythonTest.py"; interp = loadPythonFile(interp, filePath); //函数名 String functionName = "count"; PyFunction func = loadPythonFunc(interp, functionName); //执行无参方法，返回PyObject PyObject pyobj = execFunc(func); //执行无参方法，返回String String resultStr = execFuncToString(func); //执行有参方法，返回String String paramName = "name"; String resultStr2 = execFuncToString2(func, paramName); }}