jpype python 调用java

python调用java

def test(arg1,arg2,arg3):
    import os
    import  jpype
    jvm_path = jpype.getDefaultJVMPath() 
    class_path = os.path.join(settings.MEDIA_ROOT,"java_class")
    jvm_arg = "-Djava.class.path=%s" %class_path
    if not jpype.isJVMStarted():
        jpype.startJVM(jvm_path, jvm_arg)   
   
    if not jpype.isThreadAttachedToJVM():  #特别重要
        jpype.attachThreadToJVM()  #特别重要
    
    ret =  jpype.JPackage("test").TestKlass.get_v(
        arg1,arg2,arg3
    )
    return ret