Python使用jpype的踩坑记录

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time   : 2023/4/4 11:36
# @Author : shanwen.ren@xiaoying.com
# @Notice : java包加载工具
import jpype
from threading import RLock


class JarLoader:
    __rlock = RLock()
    __started = False

    @classmethod
    def start_jvm(cls, classpath, *args):
        if cls.__started:
            return
        with cls.__rlock:
            if not cls.__started:
            	# 加载JVM, 在系统中自动查找
                jvmPath = jpype.getDefaultJVMPath()
                base_args = [jvmPath, "-ea", "-Dfile.encoding=utf-8"]
                base_args += list(args) if args else []
                # 启动JVM
                jpype.startJVM(*base_args, convertStrings=False, classpath=classpath)
                cls.__started = True

    @staticmethod
    def load_class(client_path):
    	# 加载jar包中的类， 返回类， 注意返回的不是对象。 
        Klass = jpype.JClass(client_path)
        return Klass

    @classmethod
    def close(cls):
        jpype.shutdownJVM()  
        cls.__started = False

dir_path = os.path.dirname(__file__)
client_sdk_path = os.path.join(dir_path, "java_jars/pd-client-sdk-1.2.jar")
bcprov_path = os.path.join(dir_path, "java_jars/bcprov-jdk15on-1.67.jar")
bcpkix_path = os.path.join(dir_path, "java_jars/bcpkix-jdk15on-1.67.jar")
gson_path = os.path.join(dir_path, "java_jars/gson-2.10.1.jar")
jsch_path = os.path.join(dir_path, "jsch-0.1.55.jar")
class_paths = [client_sdk_path, bcprov_path, bcpkix_path, gson_path, jsch_path]

FROM python:3.8.8 AS builder
# 安装JVM,配置JAVA环境变量
ADD jdk-8u181-linux-x64.tar.gz  /usr/local/jdk
ENV JAVA_HOME=/usr/local/jdk/jdk1.8.0_181 PATH=$JAVA_HOME/bin:$PATH CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.ja