JythonJava跳过代码行
我有一个JNI包装器将数组从Fortran传递到Java。现在,我需要Java将这个数组传递给Python并返回值
objFuncType。java如下所示:
public interface objFuncType {
public double calculateobjFunc(double[] pos);
}
objFunc。java如下所示:
import java.io.*;
import java.util.*;
import org.plyjy.factory.JythonObjectFactory;
public class objFunc {
public static double evaluate(double[] position) {
double result;
for (int i=0;i<position.length;i++)
System.out.println("position ="+position[i]);
JythonObjectFactory factory = JythonObjectFactory.getInstance();
System.out.println("JythonObjectFactory created");
objFuncType func=(objFuncType)factory.createObject(objFuncType.class, "CostCalculator");
result = func.calculateCost(position);
System.out.println("Result computed! Result = "+result);
return result;
}
}
成本计算器。具体如下:
import objFuncType
class CostCalculator(objFuncType, object):
def __init__(self):
print 'Initializing'
pass
def calculateCost(self, chromosome):
fitness = 0
for i in range(len(chromosome)-1):
fitness += 100*((chromosome[i]**2)-chromosome[i+1])**2+\
(1-chromosome[i])**2
return fitness
当我从外部程序调用Java函数时,输出如下:
position =1.3653333187103271
position =0.0
position =-1.8204443454742432
position =-1.8204443454742432
数组正在被很好地打印,但是在打印语句之后的所有语句都被跳过。 请帮忙
# 1 楼答案
好吧,我知道了。我使用JNI从C调用Java,它似乎不知道在哪里查找jar文件。我在调用Java的C程序中添加了以下代码行。它按预期运行