这篇文章主要介绍了Python基于pyjnius库实现访问java类,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
简介
Pyjnius是一个用于访问Java类的Python库。
适用场景：极个别的加密算法等内容，用python不方便实现或者实现较耗时，可基于Pyjnius把java类当做python库使用。
文档：http://pyjnius.readthedocs.io/en/latest/installation.html
下载地址：https://pypi.python.org/pypi?%3Aaction=search&term=jnius&submit=search
注意jnius的版本管理有点混乱，目前看来选择jniusx比较好。
git地址：https://github.com/kivy/pyjnius/blob/master/docs/source/index.rst
安装
先安装Java JDK 和JRE、Cython
# pip3 install cython # pip3 install jniusx Collecting jniusx Downloading jniusx - 1.0.5. tar.gz Requirement already satisfied: six >= 1.7.0 in /opt/python 3.5 / lib / python3.5 / site - packages( from jniusx) Requirement already satisfied: cython in /opt/python 3.5 / lib / python3.5 / site - packages( from jniusx) Installing collected packages: jniusx Running setup.py install for jniusx...done Successfully installed jniusx - 1.0.5
注意：jnius安装的坑比较多，请参考http://stackoverflow.com/search?q=jnius
如果出现ImportError，一般是java环境变量或者path没有配置好。
jnius/jnius.c:4:20: fatal error: Python.h 一般为缺python-dev, yum -y install python-devel
pip 安装不成功可以尝试 setup.py方式。
jnius/jnius.c: No such file or directory 需要利用原来保存的clone。
快速入门
hello world 实例：
#!/usr/bin/env python #- * -coding: utf - 8 - * - #jnius_quick2.py # Author Rongzhong Xu 2016 - 08 - 02 wechat: pythontesting # https: //bitbucket.org/china-testing/python-chinese-library/src "" " jnius demo Tested in python2.7 "" " from jnius import autoclass System = autoclass('java.lang.System') System.out.println('Hello World')堆栈实例：
#!/usr/bin/env python #- * -coding: utf - 8 - * - #jnius_quick1.py # Author Rongzhong Xu 2016 - 08 - 02 wechat: pythontesting # https: //bitbucket.org/china-testing/python-chinese-library/src "" " jnius demo Tested in python2.7 "" " from jnius import autoclass Stack = autoclass('java.util.Stack') stack = Stack() stack.push('hello') stack.push('world') print(stack.pop())# -- > 'world' print(stack.pop())# -- > 'hello'调用java String的hashCode
#!/usr/bin/env python #- * -coding: utf - 8 - * - #jnius_quick3.py # Author Rongzhong Xu 2016 - 08 - 02 wechat: pythontesting # https: //bitbucket.org/china-testing/python-chinese-library/src "" " jnius demo: Call java String 's hashCode Tested in python2.7 "" " from jnius import autoclass String = autoclass('java.lang.String') print(String("hello").hashCode())调用jar包
#!python # vi com / sample / Beach.java package com.sample; public class Beach { private String name; private String city; public Beach(String name, String city) { this.name = name; this.city = city; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getCity() { return city; } public void setCity(String city) { this.city = city; } } # echo Main - Class: Beach > manifest.txt # jar cvfm Test.jar manifest.txt com / sample /*.class*/测试：
#!python # ipython Python 3.5.2( default, Nov 7 2016, 18: 53: 51) Type "copyright", "credits" or "license" for more information. IPython 5.1.0--An enhanced Interactive Python . ? - > Introduction and overview of IPython 's features. % quickref - > Quick reference. help - > Python 's own help system. object ? - > Details about 'object', use 'object??' for extra details. In[2]: #注意要先把jar加载CLASSPATH环境变量。 In[3]: from jnius import autoclass In[4]: Bla = autoclass( 'com.sample.Beach') In[5]: s = Bla("Tom", "Shenzhen") In[6]: s.getName() Out[6]: 'Tom' `` ` 封装某模块的加密机制为python包实例： * 拷贝： com cn org 到新建的临时目录 * echo Main-Class: AESUtil >manifest.txt * jar cvfm Test.jar manifest.txt * 测试代码： ` `` python # - * -coding: utf - 8 - * - #注意要先把jar加载CLASSPATH环境变量。 from jnius import autoclass AESUtil = autoclass( 'com.oppo.sso.util.AESUtil') email = AESUtil.aesEncrypt( "hello@126.com", "我是一个加密密钥") print(email)# !python # ipython Python 3.5.2( default, Nov 7 2016, 18: 53: 51) Type "copyright", "credits" or "license" for more information. IPython 5.1.0--An enhanced Interactive Python . ? - > Introduction and overview of IPython 's features. % quickref - > Quick reference. help - > Python 's own help system. object ? - > Details about 'object', use 'object??' for extra details. In[2]: #注意要先把jar加载CLASSPATH环境变量。 In[3]: from jnius import autoclass In[4]: Bla = autoclass( 'com.sample.Beach') In[5]: s = Bla("Tom", "Shenzhen") In[6]: s.getName() Out[6]: 'Tom' `` ` 封装某模块的加密机制为python包实例： * 拷贝： com cn org 到新建的临时目录 * echo Main-Class: AESUtil >manifest.txt * jar cvfm Test.jar manifest.txt * 测试代码： ` `` python # - * -coding: utf - 8 - * - #注意要先把jar加载CLASSPATH环境变量。 from jnius import autoclass AESUtil = autoclass( 'com.oppo.sso.util.AESUtil') email = AESUtil.aesEncrypt( "hello@126.com", "我是一个加密密钥") print(email)以上就是Python基于pyjnius库实现访问java类的详细内容，更多请关注0133技术站其它相关文章！
