簡(jiǎn)介
Pyjnius是一個(gè)用于訪問Java類的Python庫。
適用場(chǎng)景：極個(gè)別的加密算法等內(nèi)容，用python不方便實(shí)現(xiàn)或者實(shí)現(xiàn)較耗時(shí)，可基于Pyjnius把java類當(dāng)做python庫使用。
文檔：http://pyjnius.readthedocs.io/en/latest/installation.html
下載地址：https://pypi.python.org/pypi?%3Aaction=search&term=jnius&submit=search
注意jnius的版本管理有點(diǎn)混亂，目前看來選擇jniusx比較好。
git地址：https://github.com/kivy/pyjnius/blob/master/docs/source/index.rst
安裝
先安裝Java JDK 和JRE、Cython
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#pip3 install cython# pip3 install jniusxCollecting jniusxDownloading jniusx - 1.0.5. tar.gzRequirement already satisfied: six >= 1.7.0 in /opt/python3.5 / lib / python3.5 / site - packages( from jniusx)Requirement already satisfied: cython in /opt/python3.5 / lib / python3.5 / site - packages( from jniusx)Installing collected packages: jniusxRunning setup.py installfor jniusx...doneSuccessfully installed jniusx - 1.0.5 |
注意：jnius安裝的坑比較多，請(qǐng)參考http://stackoverflow.com/search?q=jnius
如果出現(xiàn)ImportError，一般是java環(huán)境變量或者path沒有配置好。
jnius/jnius.c:4:20: fatal error: Python.h 一般為缺python-dev, yum -y install python-devel
pip 安裝不成功可以嘗試 setup.py方式。
jnius/jnius.c: No such file or directory 需要利用原來保存的clone。
快速入門
hello world 實(shí)例：
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#!/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 demoTested in python2.7 """from jniusimport autoclassSystem = autoclass('java.lang.System')System.out.println('Hello World') |
堆棧實(shí)例：
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#!/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 demoTested in python2.7 """from jniusimport autoclassStack = autoclass('java.util.Stack')stack = Stack()stack.push('hello')stack.push('world')print(stack.pop())# -- > 'world'print(stack.pop())# -- > 'hello' |
調(diào)用java String的hashCode
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#!/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 hashCodeTested in python2.7 """from jniusimport autoclassString = autoclass('java.lang.String')print(String("hello").hashCode()) |
調(diào)用jar包
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#!python#vi com / sample / Beach.javapackage 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*/ |
測(cè)試：
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#!python#ipythonPython 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加載CLASSPATH環(huán)境變量。In[3]: from jniusimport autoclassIn[4]: Bla = autoclass( 'com.sample.Beach')In[5]: s = Bla("Tom", "Shenzhen")In[6]: s.getName()Out[6]: 'Tom'```封裝某模塊的加密機(jī)制為python包實(shí)例：* 拷貝： com cn org 到新建的臨時(shí)目錄* echo Main-Class: AESUtil >manifest.txt* jar cvfm Test.jar manifest.txt *測(cè)試代碼：```python# - * -coding: utf - 8 - * - #注意要先把jar加載CLASSPATH環(huán)境變量。from jniusimport autoclassAESUtil = autoclass( 'com.oppo.sso.util.AESUtil')email = AESUtil.aesEncrypt( "hello@126.com", "我是一個(gè)加密密鑰")print(email)# !python# ipythonPython 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加載CLASSPATH環(huán)境變量。In[3]: from jniusimport autoclassIn[4]: Bla = autoclass( 'com.sample.Beach')In[5]: s = Bla("Tom", "Shenzhen")In[6]: s.getName()Out[6]: 'Tom'```封裝某模塊的加密機(jī)制為python包實(shí)例：* 拷貝： com cn org 到新建的臨時(shí)目錄* echo Main-Class: AESUtil >manifest.txt* jar cvfm Test.jar manifest.txt *測(cè)試代碼：```python# - * -coding: utf - 8 - * - #注意要先把jar加載CLASSPATH環(huán)境變量。from jniusimport autoclassAESUtil = autoclass( 'com.oppo.sso.util.AESUtil')email = AESUtil.aesEncrypt( "hello@126.com", "我是一個(gè)加密密鑰")print(email) |
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持服務(wù)器之家。
原文鏈接：https://www.cnblogs.com/tracydzf/p/13387900.html
